message stringlengths 2 49.9k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 446 108k | cluster float64 13 13 | __index_level_0__ int64 892 217k |
|---|---|---|---|---|---|
Provide tags and a correct Python 3 solution for this coding contest problem.
You have unweighted tree of n vertices. You have to assign a positive weight to each edge so that the following condition would hold:
* For every two different leaves v_{1} and v_{2} of this tree, [bitwise XOR](https://en.wikipedia.org/wi... | instruction | 0 | 66,579 | 13 | 133,158 |
Tags: bitmasks, constructive algorithms, dfs and similar, greedy, math, trees
Correct Solution:
```
#import io,os
#input = io.BytesIO(os.read(0, os.fstat(0).st_size)).readline
from collections import deque
n = int(input())
neigh = [[] for i in range(n)]
for i in range(n-1):
u,v = map(int,input().split())
ne... | output | 1 | 66,579 | 13 | 133,159 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have unweighted tree of n vertices. You have to assign a positive weight to each edge so that the following condition would hold:
* For every two different leaves v_{1} and v_{2} of this ... | instruction | 0 | 66,580 | 13 | 133,160 |
Yes | output | 1 | 66,580 | 13 | 133,161 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have unweighted tree of n vertices. You have to assign a positive weight to each edge so that the following condition would hold:
* For every two different leaves v_{1} and v_{2} of this ... | instruction | 0 | 66,581 | 13 | 133,162 |
Yes | output | 1 | 66,581 | 13 | 133,163 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have unweighted tree of n vertices. You have to assign a positive weight to each edge so that the following condition would hold:
* For every two different leaves v_{1} and v_{2} of this ... | instruction | 0 | 66,582 | 13 | 133,164 |
Yes | output | 1 | 66,582 | 13 | 133,165 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have unweighted tree of n vertices. You have to assign a positive weight to each edge so that the following condition would hold:
* For every two different leaves v_{1} and v_{2} of this ... | instruction | 0 | 66,583 | 13 | 133,166 |
Yes | output | 1 | 66,583 | 13 | 133,167 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have unweighted tree of n vertices. You have to assign a positive weight to each edge so that the following condition would hold:
* For every two different leaves v_{1} and v_{2} of this ... | instruction | 0 | 66,584 | 13 | 133,168 |
No | output | 1 | 66,584 | 13 | 133,169 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have unweighted tree of n vertices. You have to assign a positive weight to each edge so that the following condition would hold:
* For every two different leaves v_{1} and v_{2} of this ... | instruction | 0 | 66,585 | 13 | 133,170 |
No | output | 1 | 66,585 | 13 | 133,171 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have unweighted tree of n vertices. You have to assign a positive weight to each edge so that the following condition would hold:
* For every two different leaves v_{1} and v_{2} of this ... | instruction | 0 | 66,586 | 13 | 133,172 |
No | output | 1 | 66,586 | 13 | 133,173 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have unweighted tree of n vertices. You have to assign a positive weight to each edge so that the following condition would hold:
* For every two different leaves v_{1} and v_{2} of this ... | instruction | 0 | 66,587 | 13 | 133,174 |
No | output | 1 | 66,587 | 13 | 133,175 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an undirected connected graph consisting of n vertices and m edges. Your goal is to destroy all edges of the given graph.
You may choose any vertex as the starting one and begin w... | instruction | 0 | 66,672 | 13 | 133,344 |
No | output | 1 | 66,672 | 13 | 133,345 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an undirected connected graph consisting of n vertices and m edges. Your goal is to destroy all edges of the given graph.
You may choose any vertex as the starting one and begin w... | instruction | 0 | 66,673 | 13 | 133,346 |
No | output | 1 | 66,673 | 13 | 133,347 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an undirected connected graph consisting of n vertices and m edges. Your goal is to destroy all edges of the given graph.
You may choose any vertex as the starting one and begin w... | instruction | 0 | 66,674 | 13 | 133,348 |
No | output | 1 | 66,674 | 13 | 133,349 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an undirected connected graph consisting of n vertices and m edges. Your goal is to destroy all edges of the given graph.
You may choose any vertex as the starting one and begin w... | instruction | 0 | 66,675 | 13 | 133,350 |
No | output | 1 | 66,675 | 13 | 133,351 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Anton is growing a tree in his garden. In case you forgot, the tree is a connected acyclic undirected graph.
There are n vertices in the tree, each of them is painted black or white. Anton doesn't like multicolored trees, so he wants to cha... | instruction | 0 | 66,889 | 13 | 133,778 |
Tags: dfs and similar, dp, trees
Correct Solution:
```
def main():
n = int(input())
colors = input()[::2]
edges = [[[] for _ in range(n)] for _ in (0, 1)]
for _ in range(n - 1):
u, v = map(int, input().split())
u -= 1
v -= 1
e = edges[colors[u] != colors[v]]
e[u].... | output | 1 | 66,889 | 13 | 133,779 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Anton is growing a tree in his garden. In case you forgot, the tree is a connected acyclic undirected graph.
There are n vertices in the tree, each of them is painted black or white. Anton doesn't like multicolored trees, so he wants to cha... | instruction | 0 | 66,890 | 13 | 133,780 |
Tags: dfs and similar, dp, trees
Correct Solution:
```
from collections import defaultdict, deque
class DSU:
def __init__(self, n):
self.parents = [i for i in range(n)]
self.ranks = [0 for i in range(n)]
def find_parent(self, v):
if self.parents[v] == v:
return v
se... | output | 1 | 66,890 | 13 | 133,781 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Anton is growing a tree in his garden. In case you forgot, the tree is a connected acyclic undirected graph.
There are n vertices in the tree, each of them is painted black or white. Anton doesn't like multicolored trees, so he wants to cha... | instruction | 0 | 66,891 | 13 | 133,782 |
Tags: dfs and similar, dp, trees
Correct Solution:
```
import sys
from collections import defaultdict, deque
sys.setrecursionlimit(1000000000)
def buildTree(root):
q = deque()
q.append((root, root))
vis = [0 for _ in range(n + 1)]
vis[root] = 1
while q:
v, fa = q.pop()
for x in pre... | output | 1 | 66,891 | 13 | 133,783 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Anton is growing a tree in his garden. In case you forgot, the tree is a connected acyclic undirected graph.
There are n vertices in the tree, each of them is painted black or white. Anton doesn't like multicolored trees, so he wants to cha... | instruction | 0 | 66,892 | 13 | 133,784 |
Tags: dfs and similar, dp, trees
Correct Solution:
```
def main():
n = int(input())
colors = input()[::2]
dsu = list(range(n))
edges = [[] for _ in range(n)]
for _ in range(n - 1):
u, v = map(int, input().split())
u -= 1
v -= 1
if colors[u] == colors[v]:
a... | output | 1 | 66,892 | 13 | 133,785 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Anton is growing a tree in his garden. In case you forgot, the tree is a connected acyclic undirected graph.
There are n vertices in the tree, each of them is painted black or white. Anton doesn't like multicolored trees, so he wants to cha... | instruction | 0 | 66,893 | 13 | 133,786 |
Tags: dfs and similar, dp, trees
Correct Solution:
```
def main():
n = int(input())
colors = [c == '1' for c in input()[::2]]
dsu = list(range(n))
edges = [[] for _ in range(n)]
for _ in range(n - 1):
u, v = map(int, input().split())
u -= 1
v -= 1
if colors[u] == colo... | output | 1 | 66,893 | 13 | 133,787 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Anton is growing a tree in his garden. In case you forgot, the tree is a connected acyclic undirected graph.
There are n vertices in the tree, each of them is painted black or white. Anton doesn't like multicolored trees, so he wants to cha... | instruction | 0 | 66,894 | 13 | 133,788 |
Tags: dfs and similar, dp, trees
Correct Solution:
```
def main():
from collections import defaultdict
n, colors = int(input()), input()[::2]
dsu, edges, d = list(range(n)), [], defaultdict(list)
for _ in range(n - 1):
u, v = map(int, input().split())
u -= 1
v -= 1
if col... | output | 1 | 66,894 | 13 | 133,789 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Anton is growing a tree in his garden. In case you forgot, the tree is a connected acyclic undirected graph.
There are n vertices in the tree, each of them is painted black or white. Anton doesn't like multicolored trees, so he wants to cha... | instruction | 0 | 66,895 | 13 | 133,790 |
Tags: dfs and similar, dp, trees
Correct Solution:
```
f = lambda: map(int, input().split())
s, n = 0, int(input())
g = [set() for i in range(n + 1)]
c = [0] + list(f())
d = [0] * (n + 1)
for j in range(n - 1):
a, b = f()
g[a].add(b)
g[b].add(a)
p = [q for q, t in enumerate(g) if len(t) == 1]
while p:
... | output | 1 | 66,895 | 13 | 133,791 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Anton is growing a tree in his garden. In case you forgot, the tree is a connected acyclic undirected graph.
There are n vertices in the tree, each of them is painted black or white. Anton doesn't like multicolored trees, so he wants to cha... | instruction | 0 | 66,896 | 13 | 133,792 |
Tags: dfs and similar, dp, trees
Correct Solution:
```
import sys
from collections import defaultdict, deque
# sys.setrecursionlimit(1000000000)
def buildTree(root):
q = deque()
q.append((root, root))
vis = [0 for _ in range(n + 1)]
vis[root] = 1
while q:
v, fa = q.pop()
for x in p... | output | 1 | 66,896 | 13 | 133,793 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Anton is growing a tree in his garden. In case you forgot, the tree is a connected acyclic undirected graph.
There are n vertices in the tree, each of them is painted black or white. Anton does... | instruction | 0 | 66,897 | 13 | 133,794 |
No | output | 1 | 66,897 | 13 | 133,795 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Anton is growing a tree in his garden. In case you forgot, the tree is a connected acyclic undirected graph.
There are n vertices in the tree, each of them is painted black or white. Anton does... | instruction | 0 | 66,898 | 13 | 133,796 |
No | output | 1 | 66,898 | 13 | 133,797 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Anton is growing a tree in his garden. In case you forgot, the tree is a connected acyclic undirected graph.
There are n vertices in the tree, each of them is painted black or white. Anton does... | instruction | 0 | 66,899 | 13 | 133,798 |
No | output | 1 | 66,899 | 13 | 133,799 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Anton is growing a tree in his garden. In case you forgot, the tree is a connected acyclic undirected graph.
There are n vertices in the tree, each of them is painted black or white. Anton does... | instruction | 0 | 66,900 | 13 | 133,800 |
No | output | 1 | 66,900 | 13 | 133,801 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a graph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path's value as the number of the most frequently occurring letter. For example, if letters on a path are "abaca", then the v... | instruction | 0 | 66,953 | 13 | 133,906 |
Tags: dfs and similar, dp, graphs
Correct Solution:
```
import sys
from collections import deque
input = sys.stdin.readline
n, m = map(int, input().split())
s = list(input())
graph = [[] for _ in range(n)]
degree = [0 for _ in range(n)]
dp = [[0 for _ in range(26)] for _ in range(n)]
for i in range(m):
a, b = m... | output | 1 | 66,953 | 13 | 133,907 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a graph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path's value as the number of the most frequently occurring letter. For example, if letters on a path are "abaca", then the v... | instruction | 0 | 66,954 | 13 | 133,908 |
Tags: dfs and similar, dp, graphs
Correct Solution:
```
from os import path
import sys,time
mod = int(1e9 + 7)
# import re
from math import ceil, floor,gcd,log,log2 ,factorial,sqrt
from collections import defaultdict ,Counter , OrderedDict , deque
from itertools import combinations ,accumulate
# from string import asci... | output | 1 | 66,954 | 13 | 133,909 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a graph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path's value as the number of the most frequently occurring letter. For example, if letters on a path are "abaca", then the v... | instruction | 0 | 66,955 | 13 | 133,910 |
Tags: dfs and similar, dp, graphs
Correct Solution:
```
from collections import defaultdict,deque
import sys
input=sys.stdin.readline
n,m=map(int,input().split())
l=list(input())
beauty=[0 for i in range(n)]
graph=defaultdict(list)
for i in range(m):
a,b=map(int,input().split())
a-=1
b-=1
graph[a].append(b)
beaut... | output | 1 | 66,955 | 13 | 133,911 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a graph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path's value as the number of the most frequently occurring letter. For example, if letters on a path are "abaca", then the v... | instruction | 0 | 66,956 | 13 | 133,912 |
Tags: dfs and similar, dp, graphs
Correct Solution:
```
maxi = 300005
n, m = map(int, input().split())
s = input()
s = " "+s
ed = []
dp = []
for i in range(n+1):
ed.append([])
dp.append([0]*26)
q = [0]*maxi
front = 0
rear = 0
deg = [0]*(n+1)
for i in range(m):
x, y = map(int, input().split())
ed[x].appe... | output | 1 | 66,956 | 13 | 133,913 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a graph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path's value as the number of the most frequently occurring letter. For example, if letters on a path are "abaca", then the v... | instruction | 0 | 66,957 | 13 | 133,914 |
Tags: dfs and similar, dp, graphs
Correct Solution:
```
from sys import stdin
input=lambda : stdin.readline().strip()
from collections import deque
nodes,edges=map(int,input().split())
input_string=input()
x=[]
y=[]
for i in range(edges):
a,b=map(int,input().split())
x.append(a)
y.append(b)
def beauty(nod... | output | 1 | 66,957 | 13 | 133,915 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a graph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path's value as the number of the most frequently occurring letter. For example, if letters on a path are "abaca", then the v... | instruction | 0 | 66,958 | 13 | 133,916 |
Tags: dfs and similar, dp, graphs
Correct Solution:
```
from collections import defaultdict,deque
import sys
input=sys.stdin.readline
n,m=map(int,input().split())
arr=list(input())
q=deque()
res=0
dg=[0 for i in range(n)]
cnt=0
gp=defaultdict(list)
for i in range(m):
l,k=map(int,input().split())
l=l-1
k=k-1... | output | 1 | 66,958 | 13 | 133,917 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a graph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path's value as the number of the most frequently occurring letter. For example, if letters on a path are "abaca", then the v... | instruction | 0 | 66,959 | 13 | 133,918 |
Tags: dfs and similar, dp, graphs
Correct Solution:
```
from collections import defaultdict
import sys
from sys import stdin
def check(a):
for i in a:
if i:
return True
return False
def change(x):
return ord(x)-ord('a')
def solve():
n, m = map(int, stdin.readline().split())
s =... | output | 1 | 66,959 | 13 | 133,919 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a graph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path's value as the number of the most frequently occurring letter. For example, if letters on a path are "abaca", then the v... | instruction | 0 | 66,960 | 13 | 133,920 |
Tags: dfs and similar, dp, graphs
Correct Solution:
```
import sys
from collections import defaultdict, deque
input = sys.stdin.readline
def beauty(n,m,z,x,y):
l=z
degree=[0 for i in range(n)]
graph=defaultdict(list)
for i in range(m):
a,b=x[i],y[i]
a-=1
b-=1
graph[a].append(b)
degree[b]+=1
q=deque()
... | output | 1 | 66,960 | 13 | 133,921 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a graph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path's value as the number of the most frequently occurring letter. For exampl... | instruction | 0 | 66,961 | 13 | 133,922 |
Yes | output | 1 | 66,961 | 13 | 133,923 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a graph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path's value as the number of the most frequently occurring letter. For exampl... | instruction | 0 | 66,962 | 13 | 133,924 |
Yes | output | 1 | 66,962 | 13 | 133,925 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a graph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path's value as the number of the most frequently occurring letter. For exampl... | instruction | 0 | 66,963 | 13 | 133,926 |
Yes | output | 1 | 66,963 | 13 | 133,927 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a graph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path's value as the number of the most frequently occurring letter. For exampl... | instruction | 0 | 66,964 | 13 | 133,928 |
Yes | output | 1 | 66,964 | 13 | 133,929 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a graph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path's value as the number of the most frequently occurring letter. For exampl... | instruction | 0 | 66,965 | 13 | 133,930 |
No | output | 1 | 66,965 | 13 | 133,931 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a graph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path's value as the number of the most frequently occurring letter. For exampl... | instruction | 0 | 66,966 | 13 | 133,932 |
No | output | 1 | 66,966 | 13 | 133,933 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a graph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path's value as the number of the most frequently occurring letter. For exampl... | instruction | 0 | 66,967 | 13 | 133,934 |
No | output | 1 | 66,967 | 13 | 133,935 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a graph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path's value as the number of the most frequently occurring letter. For exampl... | instruction | 0 | 66,968 | 13 | 133,936 |
No | output | 1 | 66,968 | 13 | 133,937 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Given are integers N and K, and a prime number P. Find the number, modulo P, of directed graphs G with N vertices that satisfy below. Here, the vertices are distinguishable from each other.
* G... | instruction | 0 | 67,004 | 13 | 134,008 |
No | output | 1 | 67,004 | 13 | 134,009 |
Provide a correct Python 3 solution for this coding contest problem.
Takahashi has decided to make a Christmas Tree for the Christmas party in AtCoder, Inc.
A Christmas Tree is a tree with N vertices numbered 1 through N and N-1 edges, whose i-th edge (1\leq i\leq N-1) connects Vertex a_i and b_i.
He would like to m... | instruction | 0 | 67,085 | 13 | 134,170 |
"Correct Solution:
```
from collections import deque
import sys
input=sys.stdin.readline
N=int(input())
edge=[[] for i in range(N)]
for i in range(N-1):
a,b=map(int,input().split())
edge[a-1].append(b-1)
edge[b-1].append(a-1)
parent=[-1]*N
parent[0]=0
que=deque([0])
ans=[0]
while que:
v=que.popleft()... | output | 1 | 67,085 | 13 | 134,171 |
Provide a correct Python 3 solution for this coding contest problem.
Takahashi has decided to make a Christmas Tree for the Christmas party in AtCoder, Inc.
A Christmas Tree is a tree with N vertices numbered 1 through N and N-1 edges, whose i-th edge (1\leq i\leq N-1) connects Vertex a_i and b_i.
He would like to m... | instruction | 0 | 67,086 | 13 | 134,172 |
"Correct Solution:
```
import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
from bisect import bisect_left, bisect_right
N = int(readline())
m = map(int,read().split())
AB = zip(m,m)
graph = [[] for _ in range(N+1)]
for a,b in AB:
graph[a].append(b)
... | output | 1 | 67,086 | 13 | 134,173 |
Provide a correct Python 3 solution for this coding contest problem.
Takahashi has decided to make a Christmas Tree for the Christmas party in AtCoder, Inc.
A Christmas Tree is a tree with N vertices numbered 1 through N and N-1 edges, whose i-th edge (1\leq i\leq N-1) connects Vertex a_i and b_i.
He would like to m... | instruction | 0 | 67,087 | 13 | 134,174 |
"Correct Solution:
```
import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
from bisect import bisect_right
N = int(readline())
m = map(int,read().split())
AB = zip(m,m)
graph = [[] for _ in range(N+1)]
for a,b in AB:
graph[a].append(b)
graph[b].... | output | 1 | 67,087 | 13 | 134,175 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Takahashi has decided to make a Christmas Tree for the Christmas party in AtCoder, Inc.
A Christmas Tree is a tree with N vertices numbered 1 through N and N-1 edges, whose i-th edge (1\leq i\l... | instruction | 0 | 67,088 | 13 | 134,176 |
No | output | 1 | 67,088 | 13 | 134,177 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Takahashi has decided to make a Christmas Tree for the Christmas party in AtCoder, Inc.
A Christmas Tree is a tree with N vertices numbered 1 through N and N-1 edges, whose i-th edge (1\leq i\l... | instruction | 0 | 67,089 | 13 | 134,178 |
No | output | 1 | 67,089 | 13 | 134,179 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Takahashi has decided to make a Christmas Tree for the Christmas party in AtCoder, Inc.
A Christmas Tree is a tree with N vertices numbered 1 through N and N-1 edges, whose i-th edge (1\leq i\l... | instruction | 0 | 67,090 | 13 | 134,180 |
No | output | 1 | 67,090 | 13 | 134,181 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Takahashi has decided to make a Christmas Tree for the Christmas party in AtCoder, Inc.
A Christmas Tree is a tree with N vertices numbered 1 through N and N-1 edges, whose i-th edge (1\leq i\l... | instruction | 0 | 67,091 | 13 | 134,182 |
No | output | 1 | 67,091 | 13 | 134,183 |
Provide a correct Python 3 solution for this coding contest problem.
You are given an undirected unweighted graph with N vertices and M edges that contains neither self-loops nor double edges.
Here, a self-loop is an edge where a_i = b_i (1≤i≤M), and double edges are two edges where (a_i,b_i)=(a_j,b_j) or (a_i,b_i)=(b... | instruction | 0 | 67,108 | 13 | 134,216 |
"Correct Solution:
```
import itertools
n, m = [int(x) for x in input().split()]
edges = set(tuple(int(x) for x in input().split()) for _ in range(m))
print(sum(1 if all(p in edges or tuple(reversed(p)) in edges for p in [(1, path[0])] + list(zip(path, path[1:]))) else 0 for path in itertools.permutations(range(2, n +... | output | 1 | 67,108 | 13 | 134,217 |
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