message stringlengths 2 57.2k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 61 108k | cluster float64 22 22 | __index_level_0__ int64 122 217k |
|---|---|---|---|---|---|
Provide a correct Python 3 solution for this coding contest problem.
Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural number divisors: 1 and itself. For example, the first four pr... | instruction | 0 | 53,807 | 22 | 107,614 |
"Correct Solution:
```
import sys
a=[0,0,1]+[1,0]*499999
for i in range(3,999,2):
if a[i]:a[i*i::i]=[0]*len(a[i*i::i])
for e in sys.stdin:print(sum(a[:int(e)+1]))
``` | output | 1 | 53,807 | 22 | 107,615 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural number divisors: 1 and itself. For example, the first four pr... | instruction | 0 | 53,808 | 22 | 107,616 |
"Correct Solution:
```
import sys
a=[0,0]+[1]*10**6
for i in range(999):
if a[i]:a[i*2::i]=[0 for j in a[i*2::i]]
for e in sys.stdin:print(sum(a[:int(e)+1]))
``` | output | 1 | 53,808 | 22 | 107,617 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural number divisors: 1 and itself. For example, the first four pr... | instruction | 0 | 53,809 | 22 | 107,618 |
"Correct Solution:
```
import sys
m=166666;s=[1]*m;t=[1]*m
for i in range(m):
if s[i]:
k=6*i+5
s[i+k::k]=[0]*len(s[i+k::k])
t[-2-i+k::k]=[0]*len(t[-2-i+k::k])
if t[i]:
k=6*i+7
s[-2-i+k::k]=[0]*len(s[-2-i+k::k])
t[i+k::k]=[0]*len(t[i+k::k])
for e in map(int,sys.stdin):
print([e-1,sum(s[:(e+1)//6])+sum(t[:... | output | 1 | 53,809 | 22 | 107,619 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural number divisors: 1 and itself. For example, the first four pr... | instruction | 0 | 53,810 | 22 | 107,620 |
"Correct Solution:
```
import bisect
def ifprime(n):
for i in range(3,int(n**0.5)+1):
if n%i==0:return(False)
return(True)
prime_list=[2,3]
while 1:
try:
n=int(input())
if n>prime_list[-1]+1:
for i in range(prime_list[-1]+2,n+1,2):
if ifprime(i):prime_list... | output | 1 | 53,810 | 22 | 107,621 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural number divisors: 1 and itself. For example, the first four pr... | instruction | 0 | 53,811 | 22 | 107,622 |
"Correct Solution:
```
#79 素数の数
import math
while(1):
try:
n = int(input())
except:
break
m = int(math.sqrt(n))
keys = [n // i for i in range(1, m+1)] #1からm+1の間のみn//iを行う
keys += range(keys[-1]-1, 0, -1) #range(始まりの数値,最後の数値,増加量)
h = {i: i-1 for i in keys}
for i in ... | output | 1 | 53,811 | 22 | 107,623 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural number divisors: 1 and itself. For example, the first four pr... | instruction | 0 | 53,812 | 22 | 107,624 |
"Correct Solution:
```
import sys
m=500000;a=[1]*m
for i in range(3,999,2):
if a[i//2]:a[i*i//2::i]=[0]*((m-1-i*i//2)//i+1)
for e in map(int,sys.stdin):print([e-1,sum(a[:(e+1)//2])][e>3])
``` | output | 1 | 53,812 | 22 | 107,625 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural numbe... | instruction | 0 | 53,813 | 22 | 107,626 |
Yes | output | 1 | 53,813 | 22 | 107,627 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural numbe... | instruction | 0 | 53,814 | 22 | 107,628 |
Yes | output | 1 | 53,814 | 22 | 107,629 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural numbe... | instruction | 0 | 53,815 | 22 | 107,630 |
Yes | output | 1 | 53,815 | 22 | 107,631 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural numbe... | instruction | 0 | 53,816 | 22 | 107,632 |
Yes | output | 1 | 53,816 | 22 | 107,633 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural numbe... | instruction | 0 | 53,817 | 22 | 107,634 |
No | output | 1 | 53,817 | 22 | 107,635 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural numbe... | instruction | 0 | 53,818 | 22 | 107,636 |
No | output | 1 | 53,818 | 22 | 107,637 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural numbe... | instruction | 0 | 53,819 | 22 | 107,638 |
No | output | 1 | 53,819 | 22 | 107,639 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which reads an integer n and prints the number of prime numbers which are less than or equal to n. A prime number is a natural number which has exactly two distinct natural numbe... | instruction | 0 | 53,820 | 22 | 107,640 |
No | output | 1 | 53,820 | 22 | 107,641 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have two integers l and r. Find an integer x which satisfies the conditions below:
* l ≤ x ≤ r.
* All digits of x are different.
If there are multiple answers, print any of them.
Input
The first line contains two integers l a... | instruction | 0 | 54,035 | 22 | 108,070 |
Tags: brute force, implementation
Correct Solution:
```
from collections import Counter
l, r = [int(n) for n in input().split()]
def find(l, r):
for i in range(l, r+1):
if Counter(str(i)).most_common(1)[0][1] == 1:
return i
return -1
print(find(l,r))
``` | output | 1 | 54,035 | 22 | 108,071 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have two integers l and r. Find an integer x which satisfies the conditions below:
* l ≤ x ≤ r.
* All digits of x are different.
If there are multiple answers, print any of them.
Input
The first line contains two integers l a... | instruction | 0 | 54,036 | 22 | 108,072 |
Tags: brute force, implementation
Correct Solution:
```
def solve(n):
d={}
l=[]
while(n>0):
l.append(n%10)
n=n//10
for t in l:
val=d.get(t,0)
d[t]=val+1
if d[t]>1:
return False
... | output | 1 | 54,036 | 22 | 108,073 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have two integers l and r. Find an integer x which satisfies the conditions below:
* l ≤ x ≤ r.
* All digits of x are different.
If there are multiple answers, print any of them.
Input
The first line contains two integers l a... | instruction | 0 | 54,037 | 22 | 108,074 |
Tags: brute force, implementation
Correct Solution:
```
l, r = [int(x) for x in input().split(' ')]
for i in range(l, r + 1):
if len(str(i)) == len(set(str(i))):
print(i)
break
else:
print(-1)
``` | output | 1 | 54,037 | 22 | 108,075 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have two integers l and r. Find an integer x which satisfies the conditions below:
* l ≤ x ≤ r.
* All digits of x are different.
If there are multiple answers, print any of them.
Input
The first line contains two integers l a... | instruction | 0 | 54,039 | 22 | 108,078 |
Tags: brute force, implementation
Correct Solution:
```
def isUniqueDigit(s):
for d in ['0','1','2','3','4','5','6','7','8','9']:
if s.count(d) > 1:
return False
return True
s = input().split()
l, r = int(s[0]), int(s[1])
found = '-1'
for i in range(l, r+1):
if isUniqueDigit(str(i))... | output | 1 | 54,039 | 22 | 108,079 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have two integers l and r. Find an integer x which satisfies the conditions below:
* l ≤ x ≤ r.
* All digits of x are different.
If there are multiple answers, print any of them.
Input
The first line contains two integers l a... | instruction | 0 | 54,040 | 22 | 108,080 |
Tags: brute force, implementation
Correct Solution:
```
l,r=map(int,input().split())
a=-1
for i in range(l,r+1):
b=str(i)
if len(b)==len(set(b)):a=i;break
print(a)
``` | output | 1 | 54,040 | 22 | 108,081 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have two integers l and r. Find an integer x which satisfies the conditions below:
* l ≤ x ≤ r.
* All digits of x are different.
If there are multiple answers, print any of them.
Input
The first line contains two integers l a... | instruction | 0 | 54,041 | 22 | 108,082 |
Tags: brute force, implementation
Correct Solution:
```
a,b=list(map(int,input().split(' ')))
for i in range(a,b+1):
s=str(i)
x=-1
if len(s)==len(set(s)):
x=i
break
print(x)
``` | output | 1 | 54,041 | 22 | 108,083 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Today on a math lesson the teacher told Vovochka that the Euler function of a positive integer φ(n) is an arithmetic function that counts the positive integers less than or equal to n that are r... | instruction | 0 | 54,388 | 22 | 108,776 |
No | output | 1 | 54,388 | 22 | 108,777 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Today on a math lesson the teacher told Vovochka that the Euler function of a positive integer φ(n) is an arithmetic function that counts the positive integers less than or equal to n that are r... | instruction | 0 | 54,389 | 22 | 108,778 |
No | output | 1 | 54,389 | 22 | 108,779 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Today on a math lesson the teacher told Vovochka that the Euler function of a positive integer φ(n) is an arithmetic function that counts the positive integers less than or equal to n that are r... | instruction | 0 | 54,390 | 22 | 108,780 |
No | output | 1 | 54,390 | 22 | 108,781 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Today on a math lesson the teacher told Vovochka that the Euler function of a positive integer φ(n) is an arithmetic function that counts the positive integers less than or equal to n that are r... | instruction | 0 | 54,391 | 22 | 108,782 |
No | output | 1 | 54,391 | 22 | 108,783 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Two positive integers a and b have a sum of s and a bitwise XOR of x. How many possible values are there for the ordered pair (a, b)?
Input
The first line of the input contains two integers s and x (2 ≤ s ≤ 1012, 0 ≤ x ≤ 1012), the sum and... | instruction | 0 | 54,408 | 22 | 108,816 |
Tags: dp, math
Correct Solution:
```
import sys
def add_zeros(maxs, mins):
diff = len(maxs) - len(mins)
s0 = diff * "0"
return s0 + mins
def result(_xor, _sum, flag):
if len(_xor) + len(_sum) == 0:
return 0 if flag else 1
s = _xor[-1] + _sum[-1]
newxor = _xor[:-1]
newsum = _sum[:... | output | 1 | 54,408 | 22 | 108,817 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Two positive integers a and b have a sum of s and a bitwise XOR of x. How many possible values are there for the ordered pair (a, b)?
Input
The first line of the input contains two integers s and x (2 ≤ s ≤ 1012, 0 ≤ x ≤ 1012), the sum and... | instruction | 0 | 54,409 | 22 | 108,818 |
Tags: dp, math
Correct Solution:
```
s, x = map(int, input().split())
def check(x, k):
while x:
if x & 1 == 1 and k & 1 == 1:
return False
x //= 2
k //= 2
return True
if (s - x) % 2 == 1:
print(0)
else:
k = (s - x) // 2
if not check(x, k):
print(0)
else:
x0 = x & (~k)
ans = 0... | output | 1 | 54,409 | 22 | 108,819 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Two positive integers a and b have a sum of s and a bitwise XOR of x. How many possible values are there for the ordered pair (a, b)?
Input
The first line of the input contains two integers s and x (2 ≤ s ≤ 1012, 0 ≤ x ≤ 1012), the sum and... | instruction | 0 | 54,410 | 22 | 108,820 |
Tags: dp, math
Correct Solution:
```
#!/usr/bin/env python3
from math import log
s, x = [int(x) for x in input().split()]
# sum == 0, xor == 0, one == 0 - both are 0 or 1 (2 variants)
# sum == 0, xor == 0, one == 1 - impossible
# sum == 0, xor == 1, one == 0 - impossible
# sum == 0, xor == 1, one == 1 - one 1 and an... | output | 1 | 54,410 | 22 | 108,821 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Two positive integers a and b have a sum of s and a bitwise XOR of x. How many possible values are there for the ordered pair (a, b)?
Input
The first line of the input contains two integers s and x (2 ≤ s ≤ 1012, 0 ≤ x ≤ 1012), the sum and... | instruction | 0 | 54,411 | 22 | 108,822 |
Tags: dp, math
Correct Solution:
```
'''
(a+b)=(a^b)+2*(a&b)
'''
def check(a,b):
# a and vala
for i in range(60):
if a&(1<<i):
if b&(1<<i):
return False
return True
# print(check(1,5))
def f(s,x):
if (s-x)%2!=0:
return 0
nd=(s-x)//2
bd=0
if nd==0:
... | output | 1 | 54,411 | 22 | 108,823 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Two positive integers a and b have a sum of s and a bitwise XOR of x. How many possible values are there for the ordered pair (a, b)?
Input
The first line of the input contains two integers s and x (2 ≤ s ≤ 1012, 0 ≤ x ≤ 1012), the sum and... | instruction | 0 | 54,412 | 22 | 108,824 |
Tags: dp, math
Correct Solution:
```
import sys
def read_ints():
return map(int, input().split())
s, x = read_ints()
if s < x or ((s - x) & 1):
print(0)
else:
ans = 1
ab = (s - x) // 2
xb = bin(x)[2:][::-1]
abb = bin(ab)[2:][::-1]
abb = abb + '0' * max(0, len(xb) - len(abb))
xb = xb... | output | 1 | 54,412 | 22 | 108,825 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Two positive integers a and b have a sum of s and a bitwise XOR of x. How many possible values are there for the ordered pair (a, b)?
Input
The first line of the input contains two integers s and x (2 ≤ s ≤ 1012, 0 ≤ x ≤ 1012), the sum and... | instruction | 0 | 54,413 | 22 | 108,826 |
Tags: dp, math
Correct Solution:
```
s_, x_ = map(int, input().split())
s = bin(s_)[2:]
x = bin(x_)[2:]
if len(s) < len(x):
print(0)
exit()
x = '0' * (len(s) - len(x)) + x
#print(s)
#print(x)
zero = 1
one = 0
for a, b in zip(x[::-1], s[::-1]):
#print('a, b = ', a, b)
a = int(a)
b = int(b)
new_on... | output | 1 | 54,413 | 22 | 108,827 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Two positive integers a and b have a sum of s and a bitwise XOR of x. How many possible values are there for the ordered pair (a, b)?
Input
The first line of the input contains two integers s and x (2 ≤ s ≤ 1012, 0 ≤ x ≤ 1012), the sum and... | instruction | 0 | 54,414 | 22 | 108,828 |
Tags: dp, math
Correct Solution:
```
s, x = map(int, input().split())
print(0 if s < x or (s - x) & (2 * x + 1) else 2 ** bin(x).count('1') - 2 * (s == x))
# Made By Mostafa_Khaled
``` | output | 1 | 54,414 | 22 | 108,829 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Two positive integers a and b have a sum of s and a bitwise XOR of x. How many possible values are there for the ordered pair (a, b)?
Input
The first line of the input contains two integers s and x (2 ≤ s ≤ 1012, 0 ≤ x ≤ 1012), the sum and... | instruction | 0 | 54,415 | 22 | 108,830 |
Tags: dp, math
Correct Solution:
```
def solve1(s, x):
if x == 0:
if s % 2 == 0:
return 1
else:
return 0
else:
b = (s + x) // 2
a = s - b
if a + b == s and a ^ b == x:
pw = 0
full = (s == x)
for i in range(60):
if x & (1 << i) != 0:
pw += 1
if 2 ** i - 1 == s:
full = True
... | output | 1 | 54,415 | 22 | 108,831 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0.
Input
The only line contains six integers a1, b1, a2, b2, L, R... | instruction | 0 | 54,442 | 22 | 108,884 |
Tags: math, number theory
Correct Solution:
```
def gcd(a, b):
if a==0:
return (b, 0, 1)
g, x1, y1 = gcd(b%a, a)
x = y1 - (b // a) * x1
y = x1
return (g, x, y)
def solve(a, b, x, y, r):
k = (r-x)//a
y = (y-x) % b
gg, X, Y = gcd(a, b)
#print(gg, X, Y, y, a, b)
if y ... | output | 1 | 54,442 | 22 | 108,885 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0.
Input
The only line contains six integers a1, b1, a2, b2, L, R... | instruction | 0 | 54,443 | 22 | 108,886 |
Tags: math, number theory
Correct Solution:
```
from collections import defaultdict
import sys, os, math
def gcd(a1, a2):
if a2 == 0:
return a1
else:
return gcd(a2, a1 % a2)
# return (g, x, y) a*x + b*y = gcd(x, y)
def egcd(a, b):
if a == 0:
return (b, 0, 1)
else:
... | output | 1 | 54,443 | 22 | 108,887 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0.
Input
The only line contains six integers a1, b1, a2, b2, L, R... | instruction | 0 | 54,444 | 22 | 108,888 |
Tags: math, number theory
Correct Solution:
```
def extgcd(a, b):
x, y = 0, 0
d = a;
if b != 0:
d, y, x = extgcd(b, a%b)
y -= (a//b) * x
else:
x, y = 1, 0
return (d, x, y)
def main():
a1, b1, a2, b2, L, R = map(int, input().split())
g, k, l = extgcd(a1, a2);
b = ... | output | 1 | 54,444 | 22 | 108,889 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0.
Input
The only line contains six integers a1, b1, a2, b2, L, R... | instruction | 0 | 54,445 | 22 | 108,890 |
Tags: math, number theory
Correct Solution:
```
import sys
# Uz ma to pretekanie nebavi!!!
def gcd(a, b):
if b == 0:
return [a, 1, 0]
c = a%b
[g, x1, y1] = gcd(b, c)
x = y1
y = x1 - y1 * (a//b)
return [g, x, y]
a1, b1, a2, b2, l, r = [int(i) for i in input().split(" ")]
if max(b1, b2) ... | output | 1 | 54,445 | 22 | 108,891 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0.
Input
The only line contains six integers a1, b1, a2, b2, L, R... | instruction | 0 | 54,446 | 22 | 108,892 |
Tags: math, number theory
Correct Solution:
```
def nod(a, b):
if b == 0:
return a, 1, 0
else:
answer, x, y = nod(b, a % b)
x1 = y
y1 = x - (a // b) * y
return answer, x1, y1
a1, b1, a2, b2, l, r = list(map(int, input().split()))
coeff = b1
b1, b2, l, r = b1 - coeff, b2... | output | 1 | 54,446 | 22 | 108,893 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0.
Input
The only line contains six integers a1, b1, a2, b2, L, R... | instruction | 0 | 54,447 | 22 | 108,894 |
Tags: math, number theory
Correct Solution:
```
#from IPython import embed
def xgcd(b, n):
x0, x1, y0, y1 = 1, 0, 0, 1
while n != 0:
q, b, n = b // n, n, b % n
x0, x1 = x1, x0 - q * x1
y0, y1 = y1, y0 - q * y1
return b, x0, y0
def ffloor(a, b):
if(b < 0): return ffloor(-a,-b);
r... | output | 1 | 54,447 | 22 | 108,895 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0.
Input
The only line contains six integers a1, b1, a2, b2, L, R... | instruction | 0 | 54,448 | 22 | 108,896 |
Tags: math, number theory
Correct Solution:
```
import sys
def gcd(x,y):
if y==0: return (x,1,0)
k = x//y
g,a,b = gcd(y,x%y)
return (g,b,a-b*k)
read = lambda: (int(x) for x in sys.stdin.readline().split())
a1,b1,a2,b2,l,r = read()
l = max(l,b1,b2)
r = max(l,r+1)
g,x,y = gcd(a1,a2)
if (b1-b2)%g: print(... | output | 1 | 54,448 | 22 | 108,897 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0.
Input
The only line contains six integers a1, b1, a2, b2, L, R... | instruction | 0 | 54,449 | 22 | 108,898 |
Tags: math, number theory
Correct Solution:
```
import sys, collections
def gcd(a, b):
if b == 0: return a
return gcd(b, a % b)
def lcm(a, b):
return a // gcd(a, b) * b
def extgcd(a, b):
if b == 0: return 1, 0
x, y = extgcd(b, a % b)
return y, x - a // b * y
def prime_factor(n):
res = co... | output | 1 | 54,449 | 22 | 108,899 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0.
Input
The only ... | instruction | 0 | 54,450 | 22 | 108,900 |
Yes | output | 1 | 54,450 | 22 | 108,901 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0.
Input
The only ... | instruction | 0 | 54,451 | 22 | 108,902 |
Yes | output | 1 | 54,451 | 22 | 108,903 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0.
Input
The only ... | instruction | 0 | 54,452 | 22 | 108,904 |
Yes | output | 1 | 54,452 | 22 | 108,905 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0.
Input
The only ... | instruction | 0 | 54,453 | 22 | 108,906 |
Yes | output | 1 | 54,453 | 22 | 108,907 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0.
Input
The only ... | instruction | 0 | 54,454 | 22 | 108,908 |
No | output | 1 | 54,454 | 22 | 108,909 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0.
Input
The only ... | instruction | 0 | 54,455 | 22 | 108,910 |
No | output | 1 | 54,455 | 22 | 108,911 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0.
Input
The only ... | instruction | 0 | 54,456 | 22 | 108,912 |
No | output | 1 | 54,456 | 22 | 108,913 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0.
Input
The only ... | instruction | 0 | 54,457 | 22 | 108,914 |
No | output | 1 | 54,457 | 22 | 108,915 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two integers a and b. Moreover, you are given a sequence s_0, s_1, ..., s_{n}. All values in s are integers 1 or -1. It's known that sequence is k-periodic and k divides n+1. In other words, for each k ≤ i ≤ n it's satisfied th... | instruction | 0 | 54,518 | 22 | 109,036 |
Tags: math, number theory
Correct Solution:
```
MOD = 1000000009
def inv(n): # Calculate inverse of n modulo MOD
return pow(n, MOD - 2, MOD)
n, a, b, k = map(int, input().split()) # first line of input
q = (n + 1) // k
string = input() # second line of input
s = [] # list for storing +1 and -1 as and when + or ... | output | 1 | 54,518 | 22 | 109,037 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given two integers a and b. Moreover, you are given a sequence s_0, s_1, ..., s_{n}. All values in s are integers 1 or -1. It's known that sequence is k-periodic and k divides n+1. In other words, for each k ≤ i ≤ n it's satisfied th... | instruction | 0 | 54,519 | 22 | 109,038 |
Tags: math, number theory
Correct Solution:
```
n, a, b, k = [int(i) for i in input().split()]
st = input()
l = (n + 1) // k
s = 0
mod = 1000000009
def f_pow(a, k):
if k == 0:
return 1
if k % 2 == 1:
return f_pow(a, k - 1) * a % mod
else:
return f_pow(a * a % mod, k // 2) % mod
def... | output | 1 | 54,519 | 22 | 109,039 |
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