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 |
|---|---|---|---|---|---|
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Graph constructive problems are back! This time the graph you are asked to build should match the following properties.
The graph is connected if and only if there exists a path between every p... | instruction | 0 | 74,211 | 13 | 148,422 |
No | output | 1 | 74,211 | 13 | 148,423 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Graph constructive problems are back! This time the graph you are asked to build should match the following properties.
The graph is connected if and only if there exists a path between every p... | instruction | 0 | 74,212 | 13 | 148,424 |
No | output | 1 | 74,212 | 13 | 148,425 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Graph constructive problems are back! This time the graph you are asked to build should match the following properties.
The graph is connected if and only if there exists a path between every p... | instruction | 0 | 74,213 | 13 | 148,426 |
No | output | 1 | 74,213 | 13 | 148,427 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Graph constructive problems are back! This time the graph you are asked to build should match the following properties.
The graph is connected if and only if there exists a path between every p... | instruction | 0 | 74,214 | 13 | 148,428 |
No | output | 1 | 74,214 | 13 | 148,429 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let F_k denote the k-th term of Fibonacci sequence, defined as below:
* F_0 = F_1 = 1
* for any integer n ≥ 0, F_{n+2} = F_{n+1} + F_n
You are given a tree with n vertices. Recall that a tree is a connected undirected graph without c... | instruction | 0 | 74,402 | 13 | 148,804 |
Tags: brute force, dfs and similar, divide and conquer, number theory, trees
Correct Solution:
```
class Graph:
def __init__(self, n_vertices, edges, directed=True):
self.n_vertices = n_vertices
self.directed = directed
self.edges = edges
@property
def adj(self):
try:
... | output | 1 | 74,402 | 13 | 148,805 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let F_k denote the k-th term of Fibonacci sequence, defined as below:
* F_0 = F_1 = 1
* for any integer n ≥ 0, F_{n+2} = F_{n+1} + F_n
You are given a tree with n vertices. Recall that a tree is a connected undirected graph without c... | instruction | 0 | 74,403 | 13 | 148,806 |
Tags: brute force, dfs and similar, divide and conquer, number theory, trees
Correct Solution:
```
import io
import os
from collections import Counter, defaultdict, deque
def solve(N, edges):
fib = [1, 1]
while fib[-1] < N:
fib.append(fib[-2] + fib[-1])
fibToIndex = {x: i for i, x in enumerate(fi... | output | 1 | 74,403 | 13 | 148,807 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let F_k denote the k-th term of Fibonacci sequence, defined as below:
* F_0 = F_1 = 1
* for any integer n ≥ 0, F_{n+2} = F_{n+1} + F_n
You are given a tree with n vertices. Recall that a tree is a connected undirected graph without c... | instruction | 0 | 74,404 | 13 | 148,808 |
Tags: brute force, dfs and similar, divide and conquer, number theory, trees
Correct Solution:
```
def main():
n = int(input())
graph = [[] for _ in range(n+1)]
parent = [-1 for _ in range(n+1)]
for _ in range(n-1):
x,y = map(int, input().split(' '))
graph[x].append(y)
graph[y].a... | output | 1 | 74,404 | 13 | 148,809 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let F_k denote the k-th term of Fibonacci sequence, defined as below:
* F_0 = F_1 = 1
* for any integer n ≥ 0, F_{n+2} = F_{n+1} + F_n
You are given a tree with n vertices. Recall that a tree is a connected undirected graph without c... | instruction | 0 | 74,405 | 13 | 148,810 |
Tags: brute force, dfs and similar, divide and conquer, number theory, trees
Correct Solution:
```
# region fastio # from https://codeforces.com/contest/1333/submission/75948789
import sys, io, os
BUFSIZE = 8192
class FastIO(io.IOBase):
newlines = 0
def __init__(self, file):
self._fd = file.fileno(... | output | 1 | 74,405 | 13 | 148,811 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let F_k denote the k-th term of Fibonacci sequence, defined as below:
* F_0 = F_1 = 1
* for any integer n ≥ 0, F_{n+2} = F_{n+1} + F_n
You are given a tree with n vertices. Recall that a tree is a connected undirected graph without c... | instruction | 0 | 74,406 | 13 | 148,812 |
Tags: brute force, dfs and similar, divide and conquer, number theory, trees
Correct Solution:
```
import io,os
from collections import deque
def solve(N, edges):
fib = [1, 1]
while fib[-1] < N: fib.append(fib[-2] + fib[-1])
fibToIndex = {x: i for i, x in enumerate(fib)}
if N not in fibToIndex: ... | output | 1 | 74,406 | 13 | 148,813 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let F_k denote the k-th term of Fibonacci sequence, defined as below:
* F_0 = F_1 = 1
* for any integer n ≥ 0, F_{n+2} = F_{n+1} + F_n
You are given a tree with n vertices. Recall that a tree is a connected undirected graph without c... | instruction | 0 | 74,407 | 13 | 148,814 |
Tags: brute force, dfs and similar, divide and conquer, number theory, trees
Correct Solution:
```
class Graph:
def __init__(self, n_vertices, edges, directed=True):
self.n_vertices = n_vertices
self.directed = directed
self.edges = edges
@property
def adj(self):
try:
... | output | 1 | 74,407 | 13 | 148,815 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let F_k denote the k-th term of Fibonacci sequence, defined as below:
* F_0 = F_1 = 1
* for any integer n ≥ 0, F_{n+2} = F_{n+1} + F_n
You are given a tree with n vertices. Recall that a tree is a connected undirected graph without c... | instruction | 0 | 74,408 | 13 | 148,816 |
Tags: brute force, dfs and similar, divide and conquer, number theory, trees
Correct Solution:
```
import io
import os
from collections import deque
def solve(N, edges):
fib = [1, 1]
while fib[-1] < N:
fib.append(fib[-2] + fib[-1])
fibToIndex = {x: i for i, x in enumerate(fib)}
if N not in fi... | output | 1 | 74,408 | 13 | 148,817 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let F_k denote the k-th term of Fibonacci sequence, defined as below:
* F_0 = F_1 = 1
* for any integer n ≥ 0, F_{n+2} = F_{n+1} + F_n
You are given a tree with n vertices. Recall that a tree is a connected undirected graph without c... | instruction | 0 | 74,409 | 13 | 148,818 |
Tags: brute force, dfs and similar, divide and conquer, number theory, trees
Correct Solution:
```
class Graph:
def __init__(self, n_vertices, edges, directed=True):
self.n_vertices = n_vertices
self.directed = directed
self.edges = edges
@property
def adj(self):
try:
... | output | 1 | 74,409 | 13 | 148,819 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let F_k denote the k-th term of Fibonacci sequence, defined as below:
* F_0 = F_1 = 1
* for any integer n ≥ 0, F_{n+2} = F_{n+1} + F_n
You are given a tree with n vertices. Recall that a... | instruction | 0 | 74,410 | 13 | 148,820 |
Yes | output | 1 | 74,410 | 13 | 148,821 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let F_k denote the k-th term of Fibonacci sequence, defined as below:
* F_0 = F_1 = 1
* for any integer n ≥ 0, F_{n+2} = F_{n+1} + F_n
You are given a tree with n vertices. Recall that a... | instruction | 0 | 74,411 | 13 | 148,822 |
Yes | output | 1 | 74,411 | 13 | 148,823 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let F_k denote the k-th term of Fibonacci sequence, defined as below:
* F_0 = F_1 = 1
* for any integer n ≥ 0, F_{n+2} = F_{n+1} + F_n
You are given a tree with n vertices. Recall that a... | instruction | 0 | 74,412 | 13 | 148,824 |
Yes | output | 1 | 74,412 | 13 | 148,825 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let F_k denote the k-th term of Fibonacci sequence, defined as below:
* F_0 = F_1 = 1
* for any integer n ≥ 0, F_{n+2} = F_{n+1} + F_n
You are given a tree with n vertices. Recall that a... | instruction | 0 | 74,413 | 13 | 148,826 |
Yes | output | 1 | 74,413 | 13 | 148,827 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let F_k denote the k-th term of Fibonacci sequence, defined as below:
* F_0 = F_1 = 1
* for any integer n ≥ 0, F_{n+2} = F_{n+1} + F_n
You are given a tree with n vertices. Recall that a... | instruction | 0 | 74,414 | 13 | 148,828 |
No | output | 1 | 74,414 | 13 | 148,829 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let F_k denote the k-th term of Fibonacci sequence, defined as below:
* F_0 = F_1 = 1
* for any integer n ≥ 0, F_{n+2} = F_{n+1} + F_n
You are given a tree with n vertices. Recall that a... | instruction | 0 | 74,415 | 13 | 148,830 |
No | output | 1 | 74,415 | 13 | 148,831 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let F_k denote the k-th term of Fibonacci sequence, defined as below:
* F_0 = F_1 = 1
* for any integer n ≥ 0, F_{n+2} = F_{n+1} + F_n
You are given a tree with n vertices. Recall that a... | instruction | 0 | 74,416 | 13 | 148,832 |
No | output | 1 | 74,416 | 13 | 148,833 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let F_k denote the k-th term of Fibonacci sequence, defined as below:
* F_0 = F_1 = 1
* for any integer n ≥ 0, F_{n+2} = F_{n+1} + F_n
You are given a tree with n vertices. Recall that a... | instruction | 0 | 74,417 | 13 | 148,834 |
No | output | 1 | 74,417 | 13 | 148,835 |
Provide tags and a correct Python 3 solution for this coding contest problem.
PolandBall has an undirected simple graph consisting of n vertices. Unfortunately, it has no edges. The graph is very sad because of that. PolandBall wanted to make it happier, adding some red edges. Then, he will add white edges in every re... | instruction | 0 | 74,658 | 13 | 149,316 |
Tags: constructive algorithms, graphs, shortest paths
Correct Solution:
```
#optimize input
import sys
input = sys.stdin.readline
l = input().split(' ')
n = int(l[0])
k = int(l[1])
if k == 1 or k >= 4:
print(-1)
elif k == 2:
if n <= 4:
print(-1)
else:
print(n - 1)
for i in range(1,... | output | 1 | 74,658 | 13 | 149,317 |
Provide tags and a correct Python 3 solution for this coding contest problem.
PolandBall has an undirected simple graph consisting of n vertices. Unfortunately, it has no edges. The graph is very sad because of that. PolandBall wanted to make it happier, adding some red edges. Then, he will add white edges in every re... | instruction | 0 | 74,659 | 13 | 149,318 |
Tags: constructive algorithms, graphs, shortest paths
Correct Solution:
```
l=input().split()
n=int(l[0])
k=int(l[1])
if(n==4 and k==2):
print(-1)
quit()
if(n<=3 or (k!=2 and k!=3)):
print(-1)
quit()
if(k==2):
print(n-1)
for i in range(n-1):
print(i+1,i+2)
else:
print(2*n-5)
prin... | output | 1 | 74,659 | 13 | 149,319 |
Provide tags and a correct Python 3 solution for this coding contest problem.
PolandBall has an undirected simple graph consisting of n vertices. Unfortunately, it has no edges. The graph is very sad because of that. PolandBall wanted to make it happier, adding some red edges. Then, he will add white edges in every re... | instruction | 0 | 74,660 | 13 | 149,320 |
Tags: constructive algorithms, graphs, shortest paths
Correct Solution:
```
def PolandBall(n, k):
# condiciones que no cumplen con los requisitos
if n < 4 or k > 3 or k == 1 or (k == 2 and n == 4):
print('-1')
return
# si k=2
if k == 2:
print(n-1)
for i in range(1, n):
... | output | 1 | 74,660 | 13 | 149,321 |
Provide tags and a correct Python 3 solution for this coding contest problem.
PolandBall has an undirected simple graph consisting of n vertices. Unfortunately, it has no edges. The graph is very sad because of that. PolandBall wanted to make it happier, adding some red edges. Then, he will add white edges in every re... | instruction | 0 | 74,661 | 13 | 149,322 |
Tags: constructive algorithms, graphs, shortest paths
Correct Solution:
```
s = input().split()
n = int(s[0])
k = int(s[1])
if n <= 3:
print("-1")
else:
if k == 1 or k >= 4:
print("-1")
elif k == 2:
if n == 4:
print("-1")
else:
print(str(n - 1))
f... | output | 1 | 74,661 | 13 | 149,323 |
Provide tags and a correct Python 3 solution for this coding contest problem.
PolandBall has an undirected simple graph consisting of n vertices. Unfortunately, it has no edges. The graph is very sad because of that. PolandBall wanted to make it happier, adding some red edges. Then, he will add white edges in every re... | instruction | 0 | 74,662 | 13 | 149,324 |
Tags: constructive algorithms, graphs, shortest paths
Correct Solution:
```
#!/usr/bin/python3
n, k = map(int, input().split())
if n < 4:
print(-1)
elif k == 1:
print(-1)
elif k > 3:
print(-1)
elif n == 4 and k == 2:
print(-1)
elif k == 2:
print(n - 1)
for i in range(n - 1):
print(i + ... | output | 1 | 74,662 | 13 | 149,325 |
Provide tags and a correct Python 3 solution for this coding contest problem.
PolandBall has an undirected simple graph consisting of n vertices. Unfortunately, it has no edges. The graph is very sad because of that. PolandBall wanted to make it happier, adding some red edges. Then, he will add white edges in every re... | instruction | 0 | 74,663 | 13 | 149,326 |
Tags: constructive algorithms, graphs, shortest paths
Correct Solution:
```
def PolandBall():
# entrada
n, k = map(int, input().split())
# condiciones que no cumplen con los requisitos
if n < 4 or k > 3 or k == 1 or (k == 2 and n == 4):
print('-1')
return
if k == 2 or n==4:
... | output | 1 | 74,663 | 13 | 149,327 |
Provide tags and a correct Python 3 solution for this coding contest problem.
PolandBall has an undirected simple graph consisting of n vertices. Unfortunately, it has no edges. The graph is very sad because of that. PolandBall wanted to make it happier, adding some red edges. Then, he will add white edges in every re... | instruction | 0 | 74,664 | 13 | 149,328 |
Tags: constructive algorithms, graphs, shortest paths
Correct Solution:
```
n, k = map(int, input().split())
if n < 4 or k == 1 or k > 3 or (n == 4 and k == 2):
print(-1)
elif k == 2:
print(n - 1)
[print(i, i + 1) for i in range(1, n)]
elif k == 3:
print(str(n - 1) + '\n1 2\n2 3')
[print(3, i) for i... | output | 1 | 74,664 | 13 | 149,329 |
Provide tags and a correct Python 3 solution for this coding contest problem.
PolandBall has an undirected simple graph consisting of n vertices. Unfortunately, it has no edges. The graph is very sad because of that. PolandBall wanted to make it happier, adding some red edges. Then, he will add white edges in every re... | instruction | 0 | 74,665 | 13 | 149,330 |
Tags: constructive algorithms, graphs, shortest paths
Correct Solution:
```
n, k = map(int, input().split())
if n < 4:
print(-1)
elif k == 1:
print(-1)
elif k > 3:
print(-1)
elif n == 4 and k == 2:
print(-1)
elif k == 2:
print(n - 1)
for i in range(n - 1):
print(i + 1, i + 2)
elif k == ... | output | 1 | 74,665 | 13 | 149,331 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
PolandBall has an undirected simple graph consisting of n vertices. Unfortunately, it has no edges. The graph is very sad because of that. PolandBall wanted to make it happier, adding some red e... | instruction | 0 | 74,666 | 13 | 149,332 |
Yes | output | 1 | 74,666 | 13 | 149,333 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
PolandBall has an undirected simple graph consisting of n vertices. Unfortunately, it has no edges. The graph is very sad because of that. PolandBall wanted to make it happier, adding some red e... | instruction | 0 | 74,667 | 13 | 149,334 |
No | output | 1 | 74,667 | 13 | 149,335 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
PolandBall has an undirected simple graph consisting of n vertices. Unfortunately, it has no edges. The graph is very sad because of that. PolandBall wanted to make it happier, adding some red e... | instruction | 0 | 74,668 | 13 | 149,336 |
No | output | 1 | 74,668 | 13 | 149,337 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
PolandBall has an undirected simple graph consisting of n vertices. Unfortunately, it has no edges. The graph is very sad because of that. PolandBall wanted to make it happier, adding some red e... | instruction | 0 | 74,669 | 13 | 149,338 |
No | output | 1 | 74,669 | 13 | 149,339 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
PolandBall has an undirected simple graph consisting of n vertices. Unfortunately, it has no edges. The graph is very sad because of that. PolandBall wanted to make it happier, adding some red e... | instruction | 0 | 74,670 | 13 | 149,340 |
No | output | 1 | 74,670 | 13 | 149,341 |
Provide a correct Python 3 solution for this coding contest problem.
We have a tree with N vertices. The vertices are numbered 1 to N, and the i-th edge connects Vertex a_i and Vertex b_i.
Takahashi loves the number 3. He is seeking a permutation p_1, p_2, \ldots , p_N of integers from 1 to N satisfying the following... | instruction | 0 | 74,770 | 13 | 149,540 |
"Correct Solution:
```
n,*t=map(int,open(0).read().split())
e=[[]for _ in range(n)]
x=[[],[],[]]
for i in range(n):
x[i%3]+=i+1,
for a,b in zip(*[iter(t)]*2):
e[a-1]+=b-1,
e[b-1]+=a-1,
a=[-1]*n
p=a[:]
p[0]=0
s=[0]
c=[1,0]
while s:
v=s.pop()
for w in e[v]:
if p[w]<0:
p[w]=p[v]^1
... | output | 1 | 74,770 | 13 | 149,541 |
Provide a correct Python 3 solution for this coding contest problem.
We have a tree with N vertices. The vertices are numbered 1 to N, and the i-th edge connects Vertex a_i and Vertex b_i.
Takahashi loves the number 3. He is seeking a permutation p_1, p_2, \ldots , p_N of integers from 1 to N satisfying the following... | instruction | 0 | 74,771 | 13 | 149,542 |
"Correct Solution:
```
import sys
sys.setrecursionlimit(2 * 10**6)
def inpl():
return list(map(int, input().split()))
def dfs(n, d):
if depth[n] != -1:
return
depth[n] = d
for nn in eAB[n]:
dfs(nn, d + 1)
return
N = int(input())
AB = [inpl() for i in range(N - 1)]
eAB = [[] f... | output | 1 | 74,771 | 13 | 149,543 |
Provide a correct Python 3 solution for this coding contest problem.
We have a tree with N vertices. The vertices are numbered 1 to N, and the i-th edge connects Vertex a_i and Vertex b_i.
Takahashi loves the number 3. He is seeking a permutation p_1, p_2, \ldots , p_N of integers from 1 to N satisfying the following... | instruction | 0 | 74,772 | 13 | 149,544 |
"Correct Solution:
```
from collections import Counter
def main():
N=int(input())
AB=[list(map(int, input().split())) for _ in range(N-1)]
G=[[]for _ in range(N)]
cnt=[0]*N
for a,b in AB:
G[a-1].append(b-1)
G[b-1].append(a-1)
cnt[a-1]+=1
cnt[b-1]+=1
CI=sorted(((c,... | output | 1 | 74,772 | 13 | 149,545 |
Provide a correct Python 3 solution for this coding contest problem.
We have a tree with N vertices. The vertices are numbered 1 to N, and the i-th edge connects Vertex a_i and Vertex b_i.
Takahashi loves the number 3. He is seeking a permutation p_1, p_2, \ldots , p_N of integers from 1 to N satisfying the following... | instruction | 0 | 74,773 | 13 | 149,546 |
"Correct Solution:
```
import sys,collections as cl,bisect as bs
sys.setrecursionlimit(100000)
input = sys.stdin.readline
mod = 10**9+7
Max = sys.maxsize
def l(): #intのlist
return list(map(int,input().split()))
def m(): #複数文字
return map(int,input().split())
def onem(): #Nとかの取得
return int(input())
def s(x): ... | output | 1 | 74,773 | 13 | 149,547 |
Provide a correct Python 3 solution for this coding contest problem.
We have a tree with N vertices. The vertices are numbered 1 to N, and the i-th edge connects Vertex a_i and Vertex b_i.
Takahashi loves the number 3. He is seeking a permutation p_1, p_2, \ldots , p_N of integers from 1 to N satisfying the following... | instruction | 0 | 74,774 | 13 | 149,548 |
"Correct Solution:
```
import sys
input = lambda: sys.stdin.readline().rstrip()
n = int(input())
g = [[] for _ in range(n)]
for _ in range(n - 1):
a, b = map(int, input().split())
g[a - 1].append(b - 1)
g[b - 1].append(a - 1)
mod_0 = []
mod_1 = []
mod_2 = []
for i in range(1, n + 1):
if i % 3 == 0:
... | output | 1 | 74,774 | 13 | 149,549 |
Provide a correct Python 3 solution for this coding contest problem.
We have a tree with N vertices. The vertices are numbered 1 to N, and the i-th edge connects Vertex a_i and Vertex b_i.
Takahashi loves the number 3. He is seeking a permutation p_1, p_2, \ldots , p_N of integers from 1 to N satisfying the following... | instruction | 0 | 74,775 | 13 | 149,550 |
"Correct Solution:
```
n = int(input())
edge = [[] for _ in range(n)]
for _ in range(n-1):
a, b = map(int, input().split())
edge[a-1].append(b-1)
edge[b-1].append(a-1)
group = [False] * n
parent = list(range(n))
stack = [0]
while stack:
v = stack.pop()
while edge[v]:
u = edge[v].pop()
if parent[v] !... | output | 1 | 74,775 | 13 | 149,551 |
Provide a correct Python 3 solution for this coding contest problem.
We have a tree with N vertices. The vertices are numbered 1 to N, and the i-th edge connects Vertex a_i and Vertex b_i.
Takahashi loves the number 3. He is seeking a permutation p_1, p_2, \ldots , p_N of integers from 1 to N satisfying the following... | instruction | 0 | 74,776 | 13 | 149,552 |
"Correct Solution:
```
# coding: utf-8
# Your code here!
import sys
sys.setrecursionlimit(10**6)
readline = sys.stdin.readline
read = sys.stdin.read
n,*ab = [int(i)-1 for i in read().split()]
n += 1
mp = iter(ab)
g = [[] for _ in range(n)]
for a,b in zip(mp,mp):
g[a].append(b)
g[b].append(a)
q = [0]
parent... | output | 1 | 74,776 | 13 | 149,553 |
Provide a correct Python 3 solution for this coding contest problem.
We have a tree with N vertices. The vertices are numbered 1 to N, and the i-th edge connects Vertex a_i and Vertex b_i.
Takahashi loves the number 3. He is seeking a permutation p_1, p_2, \ldots , p_N of integers from 1 to N satisfying the following... | instruction | 0 | 74,777 | 13 | 149,554 |
"Correct Solution:
```
def examA():
S = SI()
if len(S)%2==1:
print("No")
return
for i in range(len(S)//2):
if S[i*2:i*2+2]!="hi":
print("No")
return
print("Yes")
return
def examB():
a, b, M = LI()
A = LI()
B = LI()
D = [LI()for _ in ra... | output | 1 | 74,777 | 13 | 149,555 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a tree with N vertices. The vertices are numbered 1 to N, and the i-th edge connects Vertex a_i and Vertex b_i.
Takahashi loves the number 3. He is seeking a permutation p_1, p_2, \ldot... | instruction | 0 | 74,778 | 13 | 149,556 |
Yes | output | 1 | 74,778 | 13 | 149,557 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a tree with N vertices. The vertices are numbered 1 to N, and the i-th edge connects Vertex a_i and Vertex b_i.
Takahashi loves the number 3. He is seeking a permutation p_1, p_2, \ldot... | instruction | 0 | 74,779 | 13 | 149,558 |
Yes | output | 1 | 74,779 | 13 | 149,559 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a tree with N vertices. The vertices are numbered 1 to N, and the i-th edge connects Vertex a_i and Vertex b_i.
Takahashi loves the number 3. He is seeking a permutation p_1, p_2, \ldot... | instruction | 0 | 74,780 | 13 | 149,560 |
Yes | output | 1 | 74,780 | 13 | 149,561 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a tree with N vertices. The vertices are numbered 1 to N, and the i-th edge connects Vertex a_i and Vertex b_i.
Takahashi loves the number 3. He is seeking a permutation p_1, p_2, \ldot... | instruction | 0 | 74,781 | 13 | 149,562 |
Yes | output | 1 | 74,781 | 13 | 149,563 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a tree with N vertices. The vertices are numbered 1 to N, and the i-th edge connects Vertex a_i and Vertex b_i.
Takahashi loves the number 3. He is seeking a permutation p_1, p_2, \ldot... | instruction | 0 | 74,782 | 13 | 149,564 |
No | output | 1 | 74,782 | 13 | 149,565 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a tree with N vertices. The vertices are numbered 1 to N, and the i-th edge connects Vertex a_i and Vertex b_i.
Takahashi loves the number 3. He is seeking a permutation p_1, p_2, \ldot... | instruction | 0 | 74,783 | 13 | 149,566 |
No | output | 1 | 74,783 | 13 | 149,567 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a tree with N vertices. The vertices are numbered 1 to N, and the i-th edge connects Vertex a_i and Vertex b_i.
Takahashi loves the number 3. He is seeking a permutation p_1, p_2, \ldot... | instruction | 0 | 74,784 | 13 | 149,568 |
No | output | 1 | 74,784 | 13 | 149,569 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a tree with N vertices. The vertices are numbered 1 to N, and the i-th edge connects Vertex a_i and Vertex b_i.
Takahashi loves the number 3. He is seeking a permutation p_1, p_2, \ldot... | instruction | 0 | 74,785 | 13 | 149,570 |
No | output | 1 | 74,785 | 13 | 149,571 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an undirected weighted connected graph with n vertices and m edges without loops and multiple edges.
The i-th edge is e_i = (u_i, v_i, w_i); the distance between vertices u_i and v_i along the edge e_i is w_i (1 ≤ w_i). The gr... | instruction | 0 | 75,015 | 13 | 150,030 |
Tags: binary search, dsu, graphs, greedy
Correct Solution:
```
import sys
# 26
input = lambda: sys.stdin.readline().strip()
ipnut = input
def find(a):
st = []
while a!=dsu[a]:
st.append(a)
a = dsu[a]
for j in st:
dsu[j]=a
return a
def union(a,b,f):
a = find(a)
b = find(b)... | output | 1 | 75,015 | 13 | 150,031 |
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