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Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. There are N towns on a line running east-west. The towns are numbered 1 through N, in order from west to east. Each point on the line has a one-dimensional coordinate, and a point that is farthe...
instruction
0
75,766
1
151,532
Yes
output
1
75,766
1
151,533
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. There are N towns on a line running east-west. The towns are numbered 1 through N, in order from west to east. Each point on the line has a one-dimensional coordinate, and a point that is farthe...
instruction
0
75,767
1
151,534
No
output
1
75,767
1
151,535
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. There are N towns on a line running east-west. The towns are numbered 1 through N, in order from west to east. Each point on the line has a one-dimensional coordinate, and a point that is farthe...
instruction
0
75,768
1
151,536
No
output
1
75,768
1
151,537
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. There are N towns on a line running east-west. The towns are numbered 1 through N, in order from west to east. Each point on the line has a one-dimensional coordinate, and a point that is farthe...
instruction
0
75,769
1
151,538
No
output
1
75,769
1
151,539
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. There are N towns on a line running east-west. The towns are numbered 1 through N, in order from west to east. Each point on the line has a one-dimensional coordinate, and a point that is farthe...
instruction
0
75,770
1
151,540
No
output
1
75,770
1
151,541
Provide tags and a correct Python 3 solution for this coding contest problem. During a recent research Berland scientists found out that there were n cities in Ancient Berland, joined by two-way paths. Any two cities are joined by no more than one path. No path joins a city with itself. According to a well-known tradi...
instruction
0
76,215
1
152,430
Tags: constructive algorithms, graphs, greedy Correct Solution: ``` ###### https://codeforces.com/problemset/problem/41/E n = int(input()) a = list(range(1, n+1)) edge = [] used = [] for i, u in enumerate(a): for j in range(1, n, 2): if i + j >= n : continue ind = i+j edge....
output
1
76,215
1
152,431
Provide tags and a correct Python 3 solution for this coding contest problem. During a recent research Berland scientists found out that there were n cities in Ancient Berland, joined by two-way paths. Any two cities are joined by no more than one path. No path joins a city with itself. According to a well-known tradi...
instruction
0
76,216
1
152,432
Tags: constructive algorithms, graphs, greedy Correct Solution: ``` # from dust i have come, dust i will be n=int(input()) adj=[[0]*(n+1) for i in range(n+1)] if n<=3: if n==1: print(0) elif n==2: print(1) print(1,2) else: print(2) print(1,2) print(2,3) ...
output
1
76,216
1
152,433
Provide tags and a correct Python 3 solution for this coding contest problem. During a recent research Berland scientists found out that there were n cities in Ancient Berland, joined by two-way paths. Any two cities are joined by no more than one path. No path joins a city with itself. According to a well-known tradi...
instruction
0
76,217
1
152,434
Tags: constructive algorithms, graphs, greedy Correct Solution: ``` p = int(input()) print( ( p // 2 ) ** 2 + ( p // 2) * ( p % 2 ) ) for i in range(p//2): for j in range(p//2, p): print(i+1, j+1) ```
output
1
76,217
1
152,435
Provide tags and a correct Python 3 solution for this coding contest problem. During a recent research Berland scientists found out that there were n cities in Ancient Berland, joined by two-way paths. Any two cities are joined by no more than one path. No path joins a city with itself. According to a well-known tradi...
instruction
0
76,218
1
152,436
Tags: constructive algorithms, graphs, greedy Correct Solution: ``` a = int(input()) l, r = a//2, (a+1)//2 print(l*r) for i in range(0, l): for j in range(0, r): print(i+1, j+l+1) ```
output
1
76,218
1
152,437
Provide tags and a correct Python 3 solution for this coding contest problem. During a recent research Berland scientists found out that there were n cities in Ancient Berland, joined by two-way paths. Any two cities are joined by no more than one path. No path joins a city with itself. According to a well-known tradi...
instruction
0
76,219
1
152,438
Tags: constructive algorithms, graphs, greedy Correct Solution: ``` n = int(input()) ans = 0 for i in range(2, n+1): ans+=1 for j in range(i-3, 0, -2): ans+=1 print(ans) for i in range(2, n+1): print(i, i-1) for j in range(i-3, 0, -2): print(i, j) ```
output
1
76,219
1
152,439
Provide tags and a correct Python 3 solution for this coding contest problem. During a recent research Berland scientists found out that there were n cities in Ancient Berland, joined by two-way paths. Any two cities are joined by no more than one path. No path joins a city with itself. According to a well-known tradi...
instruction
0
76,220
1
152,440
Tags: constructive algorithms, graphs, greedy Correct Solution: ``` import sys n = int(sys.stdin.readline()) # Mantel's theorem print((n ** 2) // 4) for i in range(n // 2): for j in range(n // 2, n): print(str(i+1) + ' ' + str(j+1)) ```
output
1
76,220
1
152,441
Provide tags and a correct Python 3 solution for this coding contest problem. During a recent research Berland scientists found out that there were n cities in Ancient Berland, joined by two-way paths. Any two cities are joined by no more than one path. No path joins a city with itself. According to a well-known tradi...
instruction
0
76,221
1
152,442
Tags: constructive algorithms, graphs, greedy Correct Solution: ``` import math as m n = int(input()) print(m.ceil(n/2)*m.floor(n/2)) for i in range(1,n+1): for j in range(1,n+1): if i%2==0 and j%2==1: print(i,j) ```
output
1
76,221
1
152,443
Provide tags and a correct Python 3 solution for this coding contest problem. During a recent research Berland scientists found out that there were n cities in Ancient Berland, joined by two-way paths. Any two cities are joined by no more than one path. No path joins a city with itself. According to a well-known tradi...
instruction
0
76,222
1
152,444
Tags: constructive algorithms, graphs, greedy Correct Solution: ``` n = int(input()) if n == 1: print(0) elif n == 2: print(1) print(1, 2) else: fh = [] sh = [] for i in range(1, (n - 2) // 2 + 1): fh.append(i + 2) for i in range(3 + (n - 2) // 2, n + 1): sh.append(i) tot...
output
1
76,222
1
152,445
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. During a recent research Berland scientists found out that there were n cities in Ancient Berland, joined by two-way paths. Any two cities are joined by no more than one path. No path joins a ci...
instruction
0
76,223
1
152,446
Yes
output
1
76,223
1
152,447
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. During a recent research Berland scientists found out that there were n cities in Ancient Berland, joined by two-way paths. Any two cities are joined by no more than one path. No path joins a ci...
instruction
0
76,224
1
152,448
Yes
output
1
76,224
1
152,449
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. During a recent research Berland scientists found out that there were n cities in Ancient Berland, joined by two-way paths. Any two cities are joined by no more than one path. No path joins a ci...
instruction
0
76,225
1
152,450
Yes
output
1
76,225
1
152,451
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. During a recent research Berland scientists found out that there were n cities in Ancient Berland, joined by two-way paths. Any two cities are joined by no more than one path. No path joins a ci...
instruction
0
76,226
1
152,452
Yes
output
1
76,226
1
152,453
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. During a recent research Berland scientists found out that there were n cities in Ancient Berland, joined by two-way paths. Any two cities are joined by no more than one path. No path joins a ci...
instruction
0
76,227
1
152,454
No
output
1
76,227
1
152,455
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. During a recent research Berland scientists found out that there were n cities in Ancient Berland, joined by two-way paths. Any two cities are joined by no more than one path. No path joins a ci...
instruction
0
76,228
1
152,456
No
output
1
76,228
1
152,457
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. During a recent research Berland scientists found out that there were n cities in Ancient Berland, joined by two-way paths. Any two cities are joined by no more than one path. No path joins a ci...
instruction
0
76,229
1
152,458
No
output
1
76,229
1
152,459
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. During a recent research Berland scientists found out that there were n cities in Ancient Berland, joined by two-way paths. Any two cities are joined by no more than one path. No path joins a ci...
instruction
0
76,230
1
152,460
No
output
1
76,230
1
152,461
Provide tags and a correct Python 3 solution for this coding contest problem. A stowaway and a controller play the following game. The train is represented by n wagons which are numbered with positive integers from 1 to n from the head to the tail. The stowaway and the controller are initially in some two different ...
instruction
0
76,350
1
152,700
Tags: dp, games, greedy Correct Solution: ``` n, rider, cop = map(int, input().split()) rider, cop = rider - 1, cop - 1 if input().strip() == 'to head': cop_dir = -1 else: cop_dir = 1 for pos, ch in enumerate(input().strip()): #print(pos, ch, rider, cop, cop_dir) if ch == '1': rider = -1 els...
output
1
76,350
1
152,701
Provide tags and a correct Python 3 solution for this coding contest problem. A stowaway and a controller play the following game. The train is represented by n wagons which are numbered with positive integers from 1 to n from the head to the tail. The stowaway and the controller are initially in some two different ...
instruction
0
76,351
1
152,702
Tags: dp, games, greedy Correct Solution: ``` n,m,k=list(map(int,input().split())) a={'to head':-1, 'to tail':1}[input()] b=input() l=len(b) for i in range(l-1): if b[i]=='0': if k+a==m or not(1<=k+a<=n) and k-a==m: if 1<=m+a<=n and 1<=k+a<=n or not(1<=k+a<=n) and 1<=m-a<=n: m+=a...
output
1
76,351
1
152,703
Provide tags and a correct Python 3 solution for this coding contest problem. A stowaway and a controller play the following game. The train is represented by n wagons which are numbered with positive integers from 1 to n from the head to the tail. The stowaway and the controller are initially in some two different ...
instruction
0
76,352
1
152,704
Tags: dp, games, greedy Correct Solution: ``` J = lambda: map(int, input().split()) v, y, z = J() dir = 'to tail' == input() for t, x in enumerate(map(int, input())): if z == 1: dir = 1 elif z == v: dir = 0 if not x: y = min(v, y + 1) if z < y else max(1, y - 1) else: y =...
output
1
76,352
1
152,705
Provide tags and a correct Python 3 solution for this coding contest problem. A stowaway and a controller play the following game. The train is represented by n wagons which are numbered with positive integers from 1 to n from the head to the tail. The stowaway and the controller are initially in some two different ...
instruction
0
76,353
1
152,706
Tags: dp, games, greedy Correct Solution: ``` from sys import stdin, stdout, exit n, m, k = map(int, stdin.readline().split()) d = 1 if stdin.readline()[6] == 'l' else -1 m = 1 if m < k else n for i in range(5): pass for i, c in enumerate(stdin.readline(), 1): if c == '0': if k == 1: k, d = 2, 1 ...
output
1
76,353
1
152,707
Provide tags and a correct Python 3 solution for this coding contest problem. A stowaway and a controller play the following game. The train is represented by n wagons which are numbered with positive integers from 1 to n from the head to the tail. The stowaway and the controller are initially in some two different ...
instruction
0
76,354
1
152,708
Tags: dp, games, greedy Correct Solution: ``` n, z1, k1 = map(int, input().split()) z1 -= 1 k1 -= 1 s = input() if (s == 'to head'): napr = -1 else: napr = 1 s = input() for i in range(len(s)): if (k1 == z1): print('Controller', i) exit(0) if (s[i] == '0'): if (k1 > z1 and z1 != ...
output
1
76,354
1
152,709
Provide tags and a correct Python 3 solution for this coding contest problem. A stowaway and a controller play the following game. The train is represented by n wagons which are numbered with positive integers from 1 to n from the head to the tail. The stowaway and the controller are initially in some two different ...
instruction
0
76,355
1
152,710
Tags: dp, games, greedy Correct Solution: ``` R = lambda: map(int, input().split()) n, k, m = R() dir = 'to tail' == input() for t, x in enumerate(map(int, input())): if m == 1: dir = 1 elif m == n: dir = 0 if not x: k = min(n, k + 1) if m < k else max(1, k - 1) else: k =...
output
1
76,355
1
152,711
Provide tags and a correct Python 3 solution for this coding contest problem. A stowaway and a controller play the following game. The train is represented by n wagons which are numbered with positive integers from 1 to n from the head to the tail. The stowaway and the controller are initially in some two different ...
instruction
0
76,356
1
152,712
Tags: dp, games, greedy Correct Solution: ``` n,p1,p2=map(int,input().split()) s=input() state=list(input()) l=len(state) head=1 if s=="to head" else 0 for i in range(l): s=state[i] if s=="0": if head: if p1<p2: if p1>1: p1-=1 elif p2<p1: if p1<n: p1+=1 if p...
output
1
76,356
1
152,713
Provide tags and a correct Python 3 solution for this coding contest problem. A stowaway and a controller play the following game. The train is represented by n wagons which are numbered with positive integers from 1 to n from the head to the tail. The stowaway and the controller are initially in some two different ...
instruction
0
76,357
1
152,714
Tags: dp, games, greedy Correct Solution: ``` from sys import stdin, stdout, exit n, m, k = map(int, stdin.readline().split()) d = 1 if stdin.readline()[6] == 'l' else -1 m = 1 if m < k else n for i, c in enumerate(stdin.readline(), 1): if c == '0': if k == 1: k, d = 2, 1 elif k == n: k, d = n -...
output
1
76,357
1
152,715
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A stowaway and a controller play the following game. The train is represented by n wagons which are numbered with positive integers from 1 to n from the head to the tail. The stowaway and the ...
instruction
0
76,358
1
152,716
Yes
output
1
76,358
1
152,717
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A stowaway and a controller play the following game. The train is represented by n wagons which are numbered with positive integers from 1 to n from the head to the tail. The stowaway and the ...
instruction
0
76,359
1
152,718
Yes
output
1
76,359
1
152,719
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A stowaway and a controller play the following game. The train is represented by n wagons which are numbered with positive integers from 1 to n from the head to the tail. The stowaway and the ...
instruction
0
76,360
1
152,720
No
output
1
76,360
1
152,721
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A stowaway and a controller play the following game. The train is represented by n wagons which are numbered with positive integers from 1 to n from the head to the tail. The stowaway and the ...
instruction
0
76,361
1
152,722
No
output
1
76,361
1
152,723
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A stowaway and a controller play the following game. The train is represented by n wagons which are numbered with positive integers from 1 to n from the head to the tail. The stowaway and the ...
instruction
0
76,362
1
152,724
No
output
1
76,362
1
152,725
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. A stowaway and a controller play the following game. The train is represented by n wagons which are numbered with positive integers from 1 to n from the head to the tail. The stowaway and the ...
instruction
0
76,363
1
152,726
No
output
1
76,363
1
152,727
Provide a correct Python 3 solution for this coding contest problem. There is a circular pond with a perimeter of K meters, and N houses around them. The i-th house is built at a distance of A_i meters from the northmost point of the pond, measured clockwise around the pond. When traveling between these houses, you ...
instruction
0
76,473
1
152,946
"Correct Solution: ``` K,N=map(int,input().split()) *A,=sorted(map(int,input().split())) print(K-max([*[A[i+1]-A[i] for i in range(N-1)], A[0]+(K-A[-1])])) ```
output
1
76,473
1
152,947
Provide a correct Python 3 solution for this coding contest problem. There is a circular pond with a perimeter of K meters, and N houses around them. The i-th house is built at a distance of A_i meters from the northmost point of the pond, measured clockwise around the pond. When traveling between these houses, you ...
instruction
0
76,474
1
152,948
"Correct Solution: ``` f=lambda:[*map(int,input().split())] k,n=f() l=f() l+=[l[0]+k] a=0 for i in range(n): a=max(a,l[i+1]-l[i]) print(k-a) ```
output
1
76,474
1
152,949
Provide a correct Python 3 solution for this coding contest problem. There is a circular pond with a perimeter of K meters, and N houses around them. The i-th house is built at a distance of A_i meters from the northmost point of the pond, measured clockwise around the pond. When traveling between these houses, you ...
instruction
0
76,475
1
152,950
"Correct Solution: ``` k,n,*l=map(int,open(0).read().split()) print(k-max((l[i]-l[i-1])%k for i in range(n))) ```
output
1
76,475
1
152,951
Provide a correct Python 3 solution for this coding contest problem. There is a circular pond with a perimeter of K meters, and N houses around them. The i-th house is built at a distance of A_i meters from the northmost point of the pond, measured clockwise around the pond. When traveling between these houses, you ...
instruction
0
76,476
1
152,952
"Correct Solution: ``` K,N = map(int,input().split()) A = list(map(int,input().split())) D=[A[0]-A[-1]+K] for i in range(N-1): D.append(A[i+1]-A[i]) print(K-max(D)) ```
output
1
76,476
1
152,953
Provide a correct Python 3 solution for this coding contest problem. There is a circular pond with a perimeter of K meters, and N houses around them. The i-th house is built at a distance of A_i meters from the northmost point of the pond, measured clockwise around the pond. When traveling between these houses, you ...
instruction
0
76,477
1
152,954
"Correct Solution: ``` k,n=list(map(int,input().split())) A=list(map(int,input().split())) l=[k-A[-1]+A[0]] [l.append(A[i+1]-A[i]) for i in range(n-1)] print(k-max(l)) ```
output
1
76,477
1
152,955
Provide a correct Python 3 solution for this coding contest problem. There is a circular pond with a perimeter of K meters, and N houses around them. The i-th house is built at a distance of A_i meters from the northmost point of the pond, measured clockwise around the pond. When traveling between these houses, you ...
instruction
0
76,478
1
152,956
"Correct Solution: ``` k,n=map(int,input().split()) a=list(map(int,input().split())) p=a[0]+k-a[-1] for i in range(n-1): s=a[i+1]-a[i] p=max([p,s]) print(k-p) ```
output
1
76,478
1
152,957
Provide a correct Python 3 solution for this coding contest problem. There is a circular pond with a perimeter of K meters, and N houses around them. The i-th house is built at a distance of A_i meters from the northmost point of the pond, measured clockwise around the pond. When traveling between these houses, you ...
instruction
0
76,479
1
152,958
"Correct Solution: ``` k,n,*a=map(int,open(0).read().split()) a+=[a[0]+k] d=[abs(a[i]-a[i+1]) for i in range(n)] print(k-max(d)) ```
output
1
76,479
1
152,959
Provide a correct Python 3 solution for this coding contest problem. There is a circular pond with a perimeter of K meters, and N houses around them. The i-th house is built at a distance of A_i meters from the northmost point of the pond, measured clockwise around the pond. When traveling between these houses, you ...
instruction
0
76,480
1
152,960
"Correct Solution: ``` k,n=map(int,input().split()) a=list(map(int,input().split())) a.append(a[0]+k) ans=0 for i in range(n): ans=max(ans,a[i+1]-a[i]) print(k-ans) ```
output
1
76,480
1
152,961
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. There is a circular pond with a perimeter of K meters, and N houses around them. The i-th house is built at a distance of A_i meters from the northmost point of the pond, measured clockwise aro...
instruction
0
76,481
1
152,962
Yes
output
1
76,481
1
152,963
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. There is a circular pond with a perimeter of K meters, and N houses around them. The i-th house is built at a distance of A_i meters from the northmost point of the pond, measured clockwise aro...
instruction
0
76,482
1
152,964
Yes
output
1
76,482
1
152,965
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. There is a circular pond with a perimeter of K meters, and N houses around them. The i-th house is built at a distance of A_i meters from the northmost point of the pond, measured clockwise aro...
instruction
0
76,483
1
152,966
Yes
output
1
76,483
1
152,967
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. There is a circular pond with a perimeter of K meters, and N houses around them. The i-th house is built at a distance of A_i meters from the northmost point of the pond, measured clockwise aro...
instruction
0
76,484
1
152,968
Yes
output
1
76,484
1
152,969
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. There is a circular pond with a perimeter of K meters, and N houses around them. The i-th house is built at a distance of A_i meters from the northmost point of the pond, measured clockwise aro...
instruction
0
76,485
1
152,970
No
output
1
76,485
1
152,971
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. There is a circular pond with a perimeter of K meters, and N houses around them. The i-th house is built at a distance of A_i meters from the northmost point of the pond, measured clockwise aro...
instruction
0
76,486
1
152,972
No
output
1
76,486
1
152,973
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response. There is a circular pond with a perimeter of K meters, and N houses around them. The i-th house is built at a distance of A_i meters from the northmost point of the pond, measured clockwise aro...
instruction
0
76,487
1
152,974
No
output
1
76,487
1
152,975