message stringlengths 2 65.1k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 0 108k | cluster float64 14 14 | __index_level_0__ int64 0 217k |
|---|---|---|---|---|---|
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The R2 company has n employees working for it. The work involves constant exchange of ideas, sharing the stories of success and upcoming challenging. For that, R2 uses a famous instant messaging... | instruction | 0 | 39,947 | 14 | 79,894 |
Yes | output | 1 | 39,947 | 14 | 79,895 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The R2 company has n employees working for it. The work involves constant exchange of ideas, sharing the stories of success and upcoming challenging. For that, R2 uses a famous instant messaging... | instruction | 0 | 39,948 | 14 | 79,896 |
Yes | output | 1 | 39,948 | 14 | 79,897 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The R2 company has n employees working for it. The work involves constant exchange of ideas, sharing the stories of success and upcoming challenging. For that, R2 uses a famous instant messaging... | instruction | 0 | 39,949 | 14 | 79,898 |
Yes | output | 1 | 39,949 | 14 | 79,899 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The R2 company has n employees working for it. The work involves constant exchange of ideas, sharing the stories of success and upcoming challenging. For that, R2 uses a famous instant messaging... | instruction | 0 | 39,950 | 14 | 79,900 |
Yes | output | 1 | 39,950 | 14 | 79,901 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The R2 company has n employees working for it. The work involves constant exchange of ideas, sharing the stories of success and upcoming challenging. For that, R2 uses a famous instant messaging... | instruction | 0 | 39,951 | 14 | 79,902 |
No | output | 1 | 39,951 | 14 | 79,903 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The R2 company has n employees working for it. The work involves constant exchange of ideas, sharing the stories of success and upcoming challenging. For that, R2 uses a famous instant messaging... | instruction | 0 | 39,952 | 14 | 79,904 |
No | output | 1 | 39,952 | 14 | 79,905 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The R2 company has n employees working for it. The work involves constant exchange of ideas, sharing the stories of success and upcoming challenging. For that, R2 uses a famous instant messaging... | instruction | 0 | 39,953 | 14 | 79,906 |
No | output | 1 | 39,953 | 14 | 79,907 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The R2 company has n employees working for it. The work involves constant exchange of ideas, sharing the stories of success and upcoming challenging. For that, R2 uses a famous instant messaging... | instruction | 0 | 39,954 | 14 | 79,908 |
No | output | 1 | 39,954 | 14 | 79,909 |
Provide tags and a correct Python 3 solution for this coding contest problem.
An exam for n students will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspects that students with adjacent numbers (i and i + 1) always studied side by side and became friends and if ... | instruction | 0 | 39,997 | 14 | 79,994 |
Tags: constructive algorithms, implementation, math
Correct Solution:
```
import math
n=int(input())
if n==1 or n==2:
print(1)
print(1)
elif n==3:
print(2)
print('1','3',end=" ")
elif n==4:
print(4)
print('3','1','4','2',end=" ")
else:
print(n)
lst=[]
k1=1
k2=math.ceil(n/2) + 1
... | output | 1 | 39,997 | 14 | 79,995 |
Provide tags and a correct Python 3 solution for this coding contest problem.
An exam for n students will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspects that students with adjacent numbers (i and i + 1) always studied side by side and became friends and if ... | instruction | 0 | 39,998 | 14 | 79,996 |
Tags: constructive algorithms, implementation, math
Correct Solution:
```
#!/usr/bin/env python3
n = int(input())
if n<3:
print(1)
print(1)
elif n==3:
print(2)
print('1 3')
elif n==4:
print(4)
print('2 4 1 3')
else:
print(n)
for i in range(1, n+1, 2):
print(i, end = ' ', flush = ... | output | 1 | 39,998 | 14 | 79,997 |
Provide tags and a correct Python 3 solution for this coding contest problem.
An exam for n students will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspects that students with adjacent numbers (i and i + 1) always studied side by side and became friends and if ... | instruction | 0 | 39,999 | 14 | 79,998 |
Tags: constructive algorithms, implementation, math
Correct Solution:
```
n = int(input())
print((n, n - 1)[(n < 4) - (n == 1)])
print(*(range(n - 1, 0, -2),'')[n - 2 < 2], *(range(n, 0, -2)))
``` | output | 1 | 39,999 | 14 | 79,999 |
Provide tags and a correct Python 3 solution for this coding contest problem.
An exam for n students will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspects that students with adjacent numbers (i and i + 1) always studied side by side and became friends and if ... | instruction | 0 | 40,000 | 14 | 80,000 |
Tags: constructive algorithms, implementation, math
Correct Solution:
```
x = int(input())
if x > 3:
print(x)
if x%2 == 1:
for i in range(x,0,-2):
print(i,end=" ")
for j in range(x-1,0,-2):
print(j,end=" ")
else:
for j in range(x-1,0,-2):
print(j,end=" ")
for i in range(x,0,-2):
print(i,end=" ")
... | output | 1 | 40,000 | 14 | 80,001 |
Provide tags and a correct Python 3 solution for this coding contest problem.
An exam for n students will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspects that students with adjacent numbers (i and i + 1) always studied side by side and became friends and if ... | instruction | 0 | 40,001 | 14 | 80,002 |
Tags: constructive algorithms, implementation, math
Correct Solution:
```
# 534A
__author__ = 'artyom'
n = int(input())
a = [1] if n <= 2 else [1, 3] if n == 3 else [3, 1, 4, 2] if n == 4 else [i for i in range(1, n + 1, 2)] + [i for i in range(2, n + 1, 2)]
print(len(a))
print(' '.join(map(str, a)))
``` | output | 1 | 40,001 | 14 | 80,003 |
Provide tags and a correct Python 3 solution for this coding contest problem.
An exam for n students will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspects that students with adjacent numbers (i and i + 1) always studied side by side and became friends and if ... | instruction | 0 | 40,002 | 14 | 80,004 |
Tags: constructive algorithms, implementation, math
Correct Solution:
```
x=int(input())
if x==1:
print(1)
print(1)
elif x == 2:
print(1)
print(1)
elif x == 3:
print(2)
print(1, 3)
else:
if x%2==0:
t=[0]*x
for i in range(x//2):
t[2*i+1] = i+1
for i in rang... | output | 1 | 40,002 | 14 | 80,005 |
Provide tags and a correct Python 3 solution for this coding contest problem.
An exam for n students will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspects that students with adjacent numbers (i and i + 1) always studied side by side and became friends and if ... | instruction | 0 | 40,003 | 14 | 80,006 |
Tags: constructive algorithms, implementation, math
Correct Solution:
```
N=int(input())
if N<=2:
print('1\n1')
elif N==3:
print('2\n1 3')
elif N==4:
print('4\n2 4 1 3')
else:
print(N)
for I in range(1,N+1,2):
print(I)
for I in range(2,N+1,2):
print(I)
``` | output | 1 | 40,003 | 14 | 80,007 |
Provide tags and a correct Python 3 solution for this coding contest problem.
An exam for n students will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspects that students with adjacent numbers (i and i + 1) always studied side by side and became friends and if ... | instruction | 0 | 40,004 | 14 | 80,008 |
Tags: constructive algorithms, implementation, math
Correct Solution:
```
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Date : 2018-03-05 15:53:55
# @Author : Lweleth (SoungEarlf@gmail.com)
# @Link : https://github.com/
# @Version : $Id$
n = int(input())
if n < 5:
if n == 1 or n == 2:
print("1\n1")
elif ... | output | 1 | 40,004 | 14 | 80,009 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
An exam for n students will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspects that students with adjacent numbers (i and i + 1) always ... | instruction | 0 | 40,005 | 14 | 80,010 |
Yes | output | 1 | 40,005 | 14 | 80,011 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
An exam for n students will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspects that students with adjacent numbers (i and i + 1) always ... | instruction | 0 | 40,006 | 14 | 80,012 |
Yes | output | 1 | 40,006 | 14 | 80,013 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
An exam for n students will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspects that students with adjacent numbers (i and i + 1) always ... | instruction | 0 | 40,007 | 14 | 80,014 |
Yes | output | 1 | 40,007 | 14 | 80,015 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
An exam for n students will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspects that students with adjacent numbers (i and i + 1) always ... | instruction | 0 | 40,008 | 14 | 80,016 |
Yes | output | 1 | 40,008 | 14 | 80,017 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
An exam for n students will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspects that students with adjacent numbers (i and i + 1) always ... | instruction | 0 | 40,009 | 14 | 80,018 |
No | output | 1 | 40,009 | 14 | 80,019 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
An exam for n students will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspects that students with adjacent numbers (i and i + 1) always ... | instruction | 0 | 40,010 | 14 | 80,020 |
No | output | 1 | 40,010 | 14 | 80,021 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
An exam for n students will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspects that students with adjacent numbers (i and i + 1) always ... | instruction | 0 | 40,011 | 14 | 80,022 |
No | output | 1 | 40,011 | 14 | 80,023 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
An exam for n students will take place in a long and narrow room, so the students will sit in a line in some order. The teacher suspects that students with adjacent numbers (i and i + 1) always ... | instruction | 0 | 40,012 | 14 | 80,024 |
No | output | 1 | 40,012 | 14 | 80,025 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There are times you recall a good old friend and everything you've come through together. Luckily there are social networks — they store all your message history making it easy to know what you argued over 10 years ago.
More formal, your me... | instruction | 0 | 40,135 | 14 | 80,270 |
Tags: *special, dp
Correct Solution:
```
n,m = map(int,input().split())
l = list(map(int,input().split()))
dp =[0]*n
dp[0] = min(m+1,n)
print(dp[0],end = " ")
for i in range(1,n):
if l[i] == 0:
v2 = min(n - 1, i + m)
v1 = max(0, i - m)
dp[i] = v2-v1+1
print(dp[i], end=" ")
co... | output | 1 | 40,135 | 14 | 80,271 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There are times you recall a good old friend and everything you've come through together. Luckily there are social networks — they store all your message history making it easy to know what you argued over 10 years ago.
More formal, your me... | instruction | 0 | 40,136 | 14 | 80,272 |
Tags: *special, dp
Correct Solution:
```
n,k=map(int,input().split())
a=list(map(int,input().split()))
b=[min(1+k,n)]*n
for i in range(1,n):
x = a[i] - 1
if x==-1:
b[i]=min(i,k)+1+min(n-i-1,k)
else:
b[i]=b[x]+min(k+1,i-(x+min(k,n-x-1)))+min(n-i-1,k)
print(*b)
``` | output | 1 | 40,136 | 14 | 80,273 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There are times you recall a good old friend and everything you've come through together. Luckily there are social networks — they store all your message history making it easy to know what you argued over 10 years ago.
More formal, your me... | instruction | 0 | 40,137 | 14 | 80,274 |
Tags: *special, dp
Correct Solution:
```
n, k = map(int, input().split())
a = list(map(int, input().split()))
ans = [min(i - 1, k) + 1 + min(n - i, k) for i in range(1, n + 1)]
# l + 1 + min(n - l, k) - (r - min(r - 1, k)) - число перекрываюихся сообщений
for i in range(1, n + 1):
a_ = a[i - 1]
if a_ != 0:
... | output | 1 | 40,137 | 14 | 80,275 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There are times you recall a good old friend and everything you've come through together. Luckily there are social networks — they store all your message history making it easy to know what you argued over 10 years ago.
More formal, your me... | instruction | 0 | 40,138 | 14 | 80,276 |
Tags: *special, dp
Correct Solution:
```
n, k = map(int, input().split())
a = list(map(lambda x: int(x) - 1, input().split()))
dp = [0] * n
for i in range(n):
if a[i] == -1:
dp[i] = min(i, k) + min(n - i - 1, k) + 1
else:
dp[i] = dp[a[i]] - min(n - a[i] - 1, k) + min(n - i - 1, k) + min(2 * k, i - a[i] - 1) + 1
p... | output | 1 | 40,138 | 14 | 80,277 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There are times you recall a good old friend and everything you've come through together. Luckily there are social networks — they store all your message history making it easy to know what you argued over 10 years ago.
More formal, your me... | instruction | 0 | 40,139 | 14 | 80,278 |
Tags: *special, dp
Correct Solution:
```
n, k = map(int, input().split())
a = [int(x) for x in input().split()]
ans = []
for i in range(n):
c = 0
imin = max(0, i - k)
imax = min(n-1, i + k)
if a[i] != 0:
c += ans[a[i]-1]
amin = max(0, a[i]-1 - k)
amax = min(n - 1, a[i]-1 + k)
... | output | 1 | 40,139 | 14 | 80,279 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There are times you recall a good old friend and everything you've come through together. Luckily there are social networks — they store all your message history making it easy to know what you argued over 10 years ago.
More formal, your me... | instruction | 0 | 40,140 | 14 | 80,280 |
Tags: *special, dp
Correct Solution:
```
def inter(s11,s12,s21,s22):
return max(0,min(s12,s22) - max(s11,s21) + 1)
n, k = map(int,input().split())
ai = list(map(int,input().split()))
anss = [0] * n
for i in range(n):
if ai[i] == 0:
s11 = 0
s12 = n-1
s21 = i-k
s22 = i+k
an... | output | 1 | 40,140 | 14 | 80,281 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There are times you recall a good old friend and everything you've come through together. Luckily there are social networks — they store all your message history making it easy to know what you argued over 10 years ago.
More formal, your me... | instruction | 0 | 40,141 | 14 | 80,282 |
Tags: *special, dp
Correct Solution:
```
def get_border(i, n, k):
"""
Возвращает левую и правую границы (включительно)
для текущего id с проверкой выхода за пределы массива.
:param i: текущий id (ref - 1)
"""
left = i - k
if left < 0:
left = 0
right = i + k
if n <= right:
... | output | 1 | 40,141 | 14 | 80,283 |
Provide tags and a correct Python 3 solution for this coding contest problem.
There are times you recall a good old friend and everything you've come through together. Luckily there are social networks — they store all your message history making it easy to know what you argued over 10 years ago.
More formal, your me... | instruction | 0 | 40,142 | 14 | 80,284 |
Tags: *special, dp
Correct Solution:
```
(n, k) = map(int, input().split())
a = list(map(int, input().split()))
r = [0] * n
for i in range(min(k + 1, n)):
r[i] = 1 + i + (min(i + k, n - 1) - i)
for i in range(k + 1, n):
if a[i] == 0:
r[i] = 1 + k + (min(i + k, n - 1) - i)
else:
parent = a... | output | 1 | 40,142 | 14 | 80,285 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are times you recall a good old friend and everything you've come through together. Luckily there are social networks — they store all your message history making it easy to know what you ... | instruction | 0 | 40,143 | 14 | 80,286 |
Yes | output | 1 | 40,143 | 14 | 80,287 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are times you recall a good old friend and everything you've come through together. Luckily there are social networks — they store all your message history making it easy to know what you ... | instruction | 0 | 40,144 | 14 | 80,288 |
Yes | output | 1 | 40,144 | 14 | 80,289 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are times you recall a good old friend and everything you've come through together. Luckily there are social networks — they store all your message history making it easy to know what you ... | instruction | 0 | 40,145 | 14 | 80,290 |
Yes | output | 1 | 40,145 | 14 | 80,291 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are times you recall a good old friend and everything you've come through together. Luckily there are social networks — they store all your message history making it easy to know what you ... | instruction | 0 | 40,146 | 14 | 80,292 |
Yes | output | 1 | 40,146 | 14 | 80,293 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are times you recall a good old friend and everything you've come through together. Luckily there are social networks — they store all your message history making it easy to know what you ... | instruction | 0 | 40,147 | 14 | 80,294 |
No | output | 1 | 40,147 | 14 | 80,295 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are times you recall a good old friend and everything you've come through together. Luckily there are social networks — they store all your message history making it easy to know what you ... | instruction | 0 | 40,148 | 14 | 80,296 |
No | output | 1 | 40,148 | 14 | 80,297 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are times you recall a good old friend and everything you've come through together. Luckily there are social networks — they store all your message history making it easy to know what you ... | instruction | 0 | 40,149 | 14 | 80,298 |
No | output | 1 | 40,149 | 14 | 80,299 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There are times you recall a good old friend and everything you've come through together. Luckily there are social networks — they store all your message history making it easy to know what you ... | instruction | 0 | 40,150 | 14 | 80,300 |
No | output | 1 | 40,150 | 14 | 80,301 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Arkady decides to observe a river for n consecutive days. The river's water level on each day is equal to some real value.
Arkady goes to the riverside each day and makes a mark on the side of the channel at the height of the water level, b... | instruction | 0 | 40,151 | 14 | 80,302 |
Tags: data structures, dp, greedy
Correct Solution:
```
n = int(input())
m = list(map(int, input().split()))
num = [0 for _ in range(n)]
cur = 0
for i in range(n-1, -1, -1):
cur -= 1
alt = m[i]+1
if cur < alt:
cur = alt
j = i
while (j < n) and (num[j] < cur):
num[j] = cur
j += 1
else:
num[i] = cur
# p... | output | 1 | 40,151 | 14 | 80,303 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Arkady decides to observe a river for n consecutive days. The river's water level on each day is equal to some real value.
Arkady goes to the riverside each day and makes a mark on the side of the channel at the height of the water level, b... | instruction | 0 | 40,152 | 14 | 80,304 |
Tags: data structures, dp, greedy
Correct Solution:
```
n = int(input())
a = list(map(int , input().split()))
min_toptal = a.copy()
for i in range(1, n):
min_toptal[i] = max(min_toptal[i-1], a[i]+1)
min_toptal[0] = 1
for i in range(n-1, 0, -1):
min_toptal[i-1] = max(min_toptal[i]-1, min_toptal[i-1])
min_unde... | output | 1 | 40,152 | 14 | 80,305 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Arkady decides to observe a river for n consecutive days. The river's water level on each day is equal to some real value.
Arkady goes to the riverside each day and makes a mark on the side of the channel at the height of the water level, b... | instruction | 0 | 40,153 | 14 | 80,306 |
Tags: data structures, dp, greedy
Correct Solution:
```
n = int(input())
m = list(map(int, input().split()))
a = [0] * n
k = 0
for i in range(n):
k = max(k, m[i] + 1)
a[i] = k
for i in range(n - 1, 0, -1):
a[i - 1] = max(a[i] - 1, a[i - 1])
ans = 0
for i in range(n):
ans += a[i] - m[i] - 1
print(ans)
``... | output | 1 | 40,153 | 14 | 80,307 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Arkady decides to observe a river for n consecutive days. The river's water level on each day is equal to some real value.
Arkady goes to the riverside each day and makes a mark on the side of the channel at the height of the water level, b... | instruction | 0 | 40,154 | 14 | 80,308 |
Tags: data structures, dp, greedy
Correct Solution:
```
n = int(input())
above = list(map(int, input().split()))
total = [x + 1 for x in above]
# ensure at most increase by one
for i in range(0,n-1)[::-1]:
total[i] = max(total[i], total[i+1] - 1)
# ensure nondecreasing
for i in range(1,n):
total[i] = max(to... | output | 1 | 40,154 | 14 | 80,309 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Arkady decides to observe a river for n consecutive days. The river's water level on each day is equal to some real value.
Arkady goes to the riverside each day and makes a mark on the side of the channel at the height of the water level, b... | instruction | 0 | 40,155 | 14 | 80,310 |
Tags: data structures, dp, greedy
Correct Solution:
```
#!/usr/bin/env python3
from sys import stdin, stdout
def rint():
return map(int, stdin.readline().split())
#lines = stdin.readlines()
n = int(input())
u = list(rint())
u = [0] + u
mark = 0
b = [0]
for i in range(1,n+1):
uu = u[i]
b.append(i)
if u... | output | 1 | 40,155 | 14 | 80,311 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Arkady decides to observe a river for n consecutive days. The river's water level on each day is equal to some real value.
Arkady goes to the riverside each day and makes a mark on the side of the channel at the height of the water level, b... | instruction | 0 | 40,156 | 14 | 80,312 |
Tags: data structures, dp, greedy
Correct Solution:
```
n = int(input())
a = list(map(int, input().split()))
ma = [1] * n
for i in range(1, n):
ma[i] = max(ma[i - 1], a[i] + 1)
for i in range(n - 2, -1, -1):
ma[i] = max(ma[i + 1] - 1, ma[i])
print(sum(ma) - sum(a) - n)
``` | output | 1 | 40,156 | 14 | 80,313 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Arkady decides to observe a river for n consecutive days. The river's water level on each day is equal to some real value.
Arkady goes to the riverside each day and makes a mark on the side of the channel at the height of the water level, b... | instruction | 0 | 40,157 | 14 | 80,314 |
Tags: data structures, dp, greedy
Correct Solution:
```
n = int(input())
A = [int(x) for x in input().split()]
n = len(A)
LB = [0]*n
lvl = 0
for i in reversed(range(n)):
lvl = max(A[i],lvl)
LB[i] = lvl+1
lvl -= 1
#print(LB)
poss = [[1,1]]
for i in range(1,n):
l,h = poss[-1]
a = A[i]
... | output | 1 | 40,157 | 14 | 80,315 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Arkady decides to observe a river for n consecutive days. The river's water level on each day is equal to some real value.
Arkady goes to the riverside each day and makes a mark on the side of the channel at the height of the water level, b... | instruction | 0 | 40,158 | 14 | 80,316 |
Tags: data structures, dp, greedy
Correct Solution:
```
n = int(input())
a = list(map(int,input().strip().split()))
s = [0] * n
under = 0
for i in range(n):
s[i] = a[i]
for i in range(1,n):
s[i] = max(s[i],s[i-1])
for i in range(n-2,0,-1):
if s[i+1] - s[i] > 1:
s[i] = s[i+1] - 1
for i in range(n... | output | 1 | 40,158 | 14 | 80,317 |
Provide a correct Python 3 solution for this coding contest problem.
Takahashi has come to a party as a special guest. There are N ordinary guests at the party. The i-th ordinary guest has a power of A_i.
Takahashi has decided to perform M handshakes to increase the happiness of the party (let the current happiness b... | instruction | 0 | 40,208 | 14 | 80,416 |
"Correct Solution:
```
from bisect import bisect_left, bisect_right
from itertools import accumulate
def ge_m(x, m, n):
total = 0
for v in a:
delta = x - v
idx = bisect_left(a, delta)
total += (n - idx)
return total >= m
n, m = map(int, input().split())
a = list(map(int, input().... | output | 1 | 40,208 | 14 | 80,417 |
Provide a correct Python 3 solution for this coding contest problem.
Takahashi has come to a party as a special guest. There are N ordinary guests at the party. The i-th ordinary guest has a power of A_i.
Takahashi has decided to perform M handshakes to increase the happiness of the party (let the current happiness b... | instruction | 0 | 40,209 | 14 | 80,418 |
"Correct Solution:
```
import sys
input=sys.stdin.readline
import bisect
n,k=map(int,input().split())
a=list(map(int,input().split()))
a.sort()
r=a[n-1]*2+1
l=0
while r-l>=2:
mid=(l+r)//2
#mid以上はいくつあるか
#答えはl以上r未満
cnt=0
for i in range(n):
cnt+=n-bisect.bisect_left(a,mid-a[i])
if cnt>=k:
l=mid
else:
r=mid
#l... | output | 1 | 40,209 | 14 | 80,419 |
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