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 a correct Python 3 solution for this coding contest problem.
We have a rooted binary tree with N vertices, where the vertices are numbered 1 to N. Vertex 1 is the root, and the parent of Vertex i (i \geq 2) is Vertex \left[ \frac{i}{2} \right].
Each vertex has one item in it. The item in Vertex i has a value ... | instruction | 0 | 61,255 | 13 | 122,510 |
"Correct Solution:
```
# coding: utf-8
# Your code here!
import sys
read = sys.stdin.read
readline = sys.stdin.readline
#n,k,*a = map(int,read().split())
n, = map(int,readline().split())
vw = [[0,0]]+[list(map(int,readline().split())) for _ in range(n)]
def merge(av,aw,bv,bw):
la,lb = len(aw),len(bw)
rv = [0... | output | 1 | 61,255 | 13 | 122,511 |
Provide a correct Python 3 solution for this coding contest problem.
We have a rooted binary tree with N vertices, where the vertices are numbered 1 to N. Vertex 1 is the root, and the parent of Vertex i (i \geq 2) is Vertex \left[ \frac{i}{2} \right].
Each vertex has one item in it. The item in Vertex i has a value ... | instruction | 0 | 61,256 | 13 | 122,512 |
"Correct Solution:
```
# coding: utf-8
# Your code here!
import sys
read = sys.stdin.read
readline = sys.stdin.readline
#n,k,*a = map(int,read().split())
n, = map(int,readline().split())
vw = [[0,0]]+[list(map(int,readline().split())) for _ in range(n)]
def merge(av,aw,bv,bw):
la,lb = len(aw),len(bw)
rv = [0... | output | 1 | 61,256 | 13 | 122,513 |
Provide a correct Python 3 solution for this coding contest problem.
We have a rooted binary tree with N vertices, where the vertices are numbered 1 to N. Vertex 1 is the root, and the parent of Vertex i (i \geq 2) is Vertex \left[ \frac{i}{2} \right].
Each vertex has one item in it. The item in Vertex i has a value ... | instruction | 0 | 61,257 | 13 | 122,514 |
"Correct Solution:
```
#!/usr/bin/env python3
def main():
import sys
def I(): return int(sys.stdin.readline())
def LI(): return list(map(int,sys.stdin.readline().split()))
n = I()
V = []
W = []
maxL = 10**5
m = min(n, 1 << 10)
dp = [[0]*(maxL + 1)]
for i in range(n):
... | output | 1 | 61,257 | 13 | 122,515 |
Provide a correct Python 3 solution for this coding contest problem.
We have a rooted binary tree with N vertices, where the vertices are numbered 1 to N. Vertex 1 is the root, and the parent of Vertex i (i \geq 2) is Vertex \left[ \frac{i}{2} \right].
Each vertex has one item in it. The item in Vertex i has a value ... | instruction | 0 | 61,258 | 13 | 122,516 |
"Correct Solution:
```
def main():
import sys
input = sys.stdin.readline
n = int(input())
L_MAX = 10**5
D_TH = 10
V_MAX = (1 << D_TH) - 1
dp = [[0] * (L_MAX + 1)]
# items = []
items_v = []
items_w = []
for i in range(n):
val, w = map(int, input().split())
i... | output | 1 | 61,258 | 13 | 122,517 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a rooted binary tree with N vertices, where the vertices are numbered 1 to N. Vertex 1 is the root, and the parent of Vertex i (i \geq 2) is Vertex \left[ \frac{i}{2} \right].
Each vert... | instruction | 0 | 61,259 | 13 | 122,518 |
Yes | output | 1 | 61,259 | 13 | 122,519 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a rooted binary tree with N vertices, where the vertices are numbered 1 to N. Vertex 1 is the root, and the parent of Vertex i (i \geq 2) is Vertex \left[ \frac{i}{2} \right].
Each vert... | instruction | 0 | 61,260 | 13 | 122,520 |
Yes | output | 1 | 61,260 | 13 | 122,521 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a rooted binary tree with N vertices, where the vertices are numbered 1 to N. Vertex 1 is the root, and the parent of Vertex i (i \geq 2) is Vertex \left[ \frac{i}{2} \right].
Each vert... | instruction | 0 | 61,261 | 13 | 122,522 |
Yes | output | 1 | 61,261 | 13 | 122,523 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a rooted binary tree with N vertices, where the vertices are numbered 1 to N. Vertex 1 is the root, and the parent of Vertex i (i \geq 2) is Vertex \left[ \frac{i}{2} \right].
Each vert... | instruction | 0 | 61,262 | 13 | 122,524 |
Yes | output | 1 | 61,262 | 13 | 122,525 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a rooted binary tree with N vertices, where the vertices are numbered 1 to N. Vertex 1 is the root, and the parent of Vertex i (i \geq 2) is Vertex \left[ \frac{i}{2} \right].
Each vert... | instruction | 0 | 61,263 | 13 | 122,526 |
No | output | 1 | 61,263 | 13 | 122,527 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a rooted binary tree with N vertices, where the vertices are numbered 1 to N. Vertex 1 is the root, and the parent of Vertex i (i \geq 2) is Vertex \left[ \frac{i}{2} \right].
Each vert... | instruction | 0 | 61,264 | 13 | 122,528 |
No | output | 1 | 61,264 | 13 | 122,529 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a rooted binary tree with N vertices, where the vertices are numbered 1 to N. Vertex 1 is the root, and the parent of Vertex i (i \geq 2) is Vertex \left[ \frac{i}{2} \right].
Each vert... | instruction | 0 | 61,265 | 13 | 122,530 |
No | output | 1 | 61,265 | 13 | 122,531 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a rooted binary tree with N vertices, where the vertices are numbered 1 to N. Vertex 1 is the root, and the parent of Vertex i (i \geq 2) is Vertex \left[ \frac{i}{2} \right].
Each vert... | instruction | 0 | 61,266 | 13 | 122,532 |
No | output | 1 | 61,266 | 13 | 122,533 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There was no problem about a cactus at the NERC 2020 online round. That's a bad mistake, so judges decided to fix it. You shall not pass to the World Finals 2021 without solving a problem about ... | instruction | 0 | 61,705 | 13 | 123,410 |
No | output | 1 | 61,705 | 13 | 123,411 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There was no problem about a cactus at the NERC 2020 online round. That's a bad mistake, so judges decided to fix it. You shall not pass to the World Finals 2021 without solving a problem about ... | instruction | 0 | 61,706 | 13 | 123,412 |
No | output | 1 | 61,706 | 13 | 123,413 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There was no problem about a cactus at the NERC 2020 online round. That's a bad mistake, so judges decided to fix it. You shall not pass to the World Finals 2021 without solving a problem about ... | instruction | 0 | 61,707 | 13 | 123,414 |
No | output | 1 | 61,707 | 13 | 123,415 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
There was no problem about a cactus at the NERC 2020 online round. That's a bad mistake, so judges decided to fix it. You shall not pass to the World Finals 2021 without solving a problem about ... | instruction | 0 | 61,708 | 13 | 123,416 |
No | output | 1 | 61,708 | 13 | 123,417 |
Provide a correct Python 3 solution for this coding contest problem.
Inspired by the tv series Stranger Things, bear Limak is going for a walk between two mirror worlds.
There are two perfect binary trees of height H, each with the standard numeration of vertices from 1 to 2^H-1. The root is 1 and the children of x a... | instruction | 0 | 62,039 | 13 | 124,078 |
"Correct Solution:
```
#import random,time
H=int(input())
#P=[i for i in range(2**(H-1))]
#random.shuffle(P)
P=list(map(lambda x:int(x)-1,input().split()))
mod=10**9+7
inv=pow(2,mod-2,mod)
L=2**(H-1)
base_t=[1 for i in range(1+1<<H)]
base_t[0]=0
for i in range(2,1+1<<H):
base_t[i]=i*base_t[i>>1]
base_t[i]%=m... | output | 1 | 62,039 | 13 | 124,079 |
Provide a correct Python 3 solution for this coding contest problem.
Inspired by the tv series Stranger Things, bear Limak is going for a walk between two mirror worlds.
There are two perfect binary trees of height H, each with the standard numeration of vertices from 1 to 2^H-1. The root is 1 and the children of x a... | instruction | 0 | 62,040 | 13 | 124,080 |
"Correct Solution:
```
import sys
h, *ppp = map(int, sys.stdin.buffer.read().split())
n = 1 << (h - 1)
ppp = [p + n - 1 for p in ppp]
MOD = 10 ** 9 + 7
cumprods = [1] * (2 * n) # 根から頂点vまでの経路の累積積
cumprods_rev = [1] * n # ..の逆数
cumprods_through = [0] * n # 木1の根から木2の根まで、木1の i 番目の葉を経由する経路の積
for i in range(2, 2 * n):
... | output | 1 | 62,040 | 13 | 124,081 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Inspired by the tv series Stranger Things, bear Limak is going for a walk between two mirror worlds.
There are two perfect binary trees of height H, each with the standard numeration of vertice... | instruction | 0 | 62,041 | 13 | 124,082 |
No | output | 1 | 62,041 | 13 | 124,083 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Inspired by the tv series Stranger Things, bear Limak is going for a walk between two mirror worlds.
There are two perfect binary trees of height H, each with the standard numeration of vertice... | instruction | 0 | 62,042 | 13 | 124,084 |
No | output | 1 | 62,042 | 13 | 124,085 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Inspired by the tv series Stranger Things, bear Limak is going for a walk between two mirror worlds.
There are two perfect binary trees of height H, each with the standard numeration of vertice... | instruction | 0 | 62,043 | 13 | 124,086 |
No | output | 1 | 62,043 | 13 | 124,087 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Inspired by the tv series Stranger Things, bear Limak is going for a walk between two mirror worlds.
There are two perfect binary trees of height H, each with the standard numeration of vertice... | instruction | 0 | 62,044 | 13 | 124,088 |
No | output | 1 | 62,044 | 13 | 124,089 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a connected undirected simple graph, which has N vertices and M edges. The vertices are numbered 1 through N, and the edges are numbered 1 through M. Edge i connects vertices A_i and B_i. Your task is to find a path that satisfies the f... | instruction | 0 | 62,157 | 13 | 124,314 |
"Correct Solution:
```
import sys
from collections import deque
input = sys.stdin.readline
n,m = map(int,input().split())
ab = [list(map(int,input().split())) for i in range(m)]
graph = [[] for i in range(n+1)]
for a,b in ab:
graph[a].append(b)
graph[b].append(a)
vis = [0 for i in range(n+1)]
vis[1] = 1
stack = [1]... | output | 1 | 62,157 | 13 | 124,315 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a connected undirected simple graph, which has N vertices and M edges. The vertices are numbered 1 through N, and the edges are numbered 1 through M. Edge i connects vertices A_i and B_i. Your task is to find a path that satisfies the f... | instruction | 0 | 62,158 | 13 | 124,316 |
"Correct Solution:
```
import sys
input=sys.stdin.readline
from collections import deque
n,m=map(int,input().split())
E=[[] for _ in range(n)]
for _ in range(m):
a,b=map(int,input().split())
a-=1
b-=1
E[a].append(b)
E[b].append(a)
q=deque([0])
Visited=[False]*n
Visited[0]=True
while True:
s=q[0]... | output | 1 | 62,158 | 13 | 124,317 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a connected undirected simple graph, which has N vertices and M edges. The vertices are numbered 1 through N, and the edges are numbered 1 through M. Edge i connects vertices A_i and B_i. Your task is to find a path that satisfies the f... | instruction | 0 | 62,159 | 13 | 124,318 |
"Correct Solution:
```
from collections import deque
n,m=map(int,input().split())
g=[[] for i in range(1+n)]
v=[0]*(1+n)
for i in range(m):
a,b=map(int,input().split())
g[a].append(b)
g[b].append(a)
if i==0:
q=[a,b]
v[a]=v[b]=1
p=[q[-1]]
path=[]
while p:
cur=p.pop()
path.append(... | output | 1 | 62,159 | 13 | 124,319 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a connected undirected simple graph, which has N vertices and M edges. The vertices are numbered 1 through N, and the edges are numbered 1 through M. Edge i connects vertices A_i and B_i. Your task is to find a path that satisfies the f... | instruction | 0 | 62,160 | 13 | 124,320 |
"Correct Solution:
```
#!usr/bin/env python3
from collections import defaultdict,deque
from heapq import heappush, heappop
import sys
import math
import bisect
import random
def LI(): return [int(x) for x in sys.stdin.readline().split()]
def I(): return int(sys.stdin.readline())
def LS():return [list(x) for x in sys.st... | output | 1 | 62,160 | 13 | 124,321 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a connected undirected simple graph, which has N vertices and M edges. The vertices are numbered 1 through N, and the edges are numbered 1 through M. Edge i connects vertices A_i and B_i. Your task is to find a path that satisfies the f... | instruction | 0 | 62,161 | 13 | 124,322 |
"Correct Solution:
```
from collections import deque
import sys
input=sys.stdin.readline
n,m=map(int,input().split())
path=[[] for i in range(n)]
for i in range(m):
a,b=map(int,input().split())
path[a-1].append(b-1)
path[b-1].append(a-1)
l=deque()
s=set()
l.append(0)
s.add(0)
while True:
for i in path[l[0]]:
... | output | 1 | 62,161 | 13 | 124,323 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a connected undirected simple graph, which has N vertices and M edges. The vertices are numbered 1 through N, and the edges are numbered 1 through M. Edge i connects vertices A_i and B_i. Your task is to find a path that satisfies the f... | instruction | 0 | 62,162 | 13 | 124,324 |
"Correct Solution:
```
import sys
from collections import deque
sys.setrecursionlimit(10**7)
def solve():
def dfs1(u, path, visited):
for w in Adj[u]:
if not visited[w]:
path.append(w)
visited[w] = True
dfs1(w, path, visited)
retu... | output | 1 | 62,162 | 13 | 124,325 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a connected undirected simple graph, which has N vertices and M edges. The vertices are numbered 1 through N, and the edges are numbered 1 through M. Edge i connects vertices A_i and B_i. Your task is to find a path that satisfies the f... | instruction | 0 | 62,163 | 13 | 124,326 |
"Correct Solution:
```
def examA():
N = I()
A = LI()
ans = 1
flag = None
for i in range(N-1):
cur = A[i+1] - A[i]
if not flag:
if cur<0:
flag = "d"
elif cur>0:
flag = "u"
else:
if cur<0 and flag=="u":
... | output | 1 | 62,163 | 13 | 124,327 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a connected undirected simple graph, which has N vertices and M edges. The vertices are numbered 1 through N, and the edges are numbered 1 through M. Edge i connects vertices A_i and B_i. Your task is to find a path that satisfies the f... | instruction | 0 | 62,164 | 13 | 124,328 |
"Correct Solution:
```
from collections import deque
import sys
input = sys.stdin.readline
n,m = map(int,input().split())
e = [[] for i in range(n+1)]
for i in range(m):
a,b = map(int,input().split())
e[a].append(b)
e[b].append(a)
l = deque([1])
s = set([1])
while True:
check = True
for nex in e[l[... | output | 1 | 62,164 | 13 | 124,329 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a connected undirected simple graph, which has N vertices and M edges. The vertices are numbered 1 through N, and the edges are numbered 1 through M. Edge i connects vertices A_i a... | instruction | 0 | 62,165 | 13 | 124,330 |
Yes | output | 1 | 62,165 | 13 | 124,331 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a connected undirected simple graph, which has N vertices and M edges. The vertices are numbered 1 through N, and the edges are numbered 1 through M. Edge i connects vertices A_i a... | instruction | 0 | 62,166 | 13 | 124,332 |
Yes | output | 1 | 62,166 | 13 | 124,333 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a connected undirected simple graph, which has N vertices and M edges. The vertices are numbered 1 through N, and the edges are numbered 1 through M. Edge i connects vertices A_i a... | instruction | 0 | 62,167 | 13 | 124,334 |
Yes | output | 1 | 62,167 | 13 | 124,335 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a connected undirected simple graph, which has N vertices and M edges. The vertices are numbered 1 through N, and the edges are numbered 1 through M. Edge i connects vertices A_i a... | instruction | 0 | 62,168 | 13 | 124,336 |
Yes | output | 1 | 62,168 | 13 | 124,337 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a connected undirected simple graph, which has N vertices and M edges. The vertices are numbered 1 through N, and the edges are numbered 1 through M. Edge i connects vertices A_i a... | instruction | 0 | 62,169 | 13 | 124,338 |
No | output | 1 | 62,169 | 13 | 124,339 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a connected undirected simple graph, which has N vertices and M edges. The vertices are numbered 1 through N, and the edges are numbered 1 through M. Edge i connects vertices A_i a... | instruction | 0 | 62,170 | 13 | 124,340 |
No | output | 1 | 62,170 | 13 | 124,341 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a connected undirected simple graph, which has N vertices and M edges. The vertices are numbered 1 through N, and the edges are numbered 1 through M. Edge i connects vertices A_i a... | instruction | 0 | 62,171 | 13 | 124,342 |
No | output | 1 | 62,171 | 13 | 124,343 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a connected undirected simple graph, which has N vertices and M edges. The vertices are numbered 1 through N, and the edges are numbered 1 through M. Edge i connects vertices A_i a... | instruction | 0 | 62,172 | 13 | 124,344 |
No | output | 1 | 62,172 | 13 | 124,345 |
Provide a correct Python 3 solution for this coding contest problem.
Optimal Binary Search Tree is a binary search tree constructed from $n$ keys and $n+1$ dummy keys so as to minimize the expected value of cost for a search operation.
We are given a sequence $K = {k_1, k_2, ..., k_n}$ of $n$ distinct keys in sorted ... | instruction | 0 | 62,243 | 13 | 124,486 |
"Correct Solution:
```
import sys
readline = sys.stdin.readline
write = sys.stdout.write
N = int(readline())
*P, = map(float, readline().split())
*Q, = map(float, readline().split())
K = [[None]*(N+1) for i in range(N+1)]
C = [[None]*(N+1) for i in range(N+1)]
S = [0]*(2*N+2)
for i in range(2*N+1):
S[i+1] = S[i] ... | output | 1 | 62,243 | 13 | 124,487 |
Provide a correct Python 3 solution for this coding contest problem.
Optimal Binary Search Tree is a binary search tree constructed from $n$ keys and $n+1$ dummy keys so as to minimize the expected value of cost for a search operation.
We are given a sequence $K = {k_1, k_2, ..., k_n}$ of $n$ distinct keys in sorted ... | instruction | 0 | 62,244 | 13 | 124,488 |
"Correct Solution:
```
#!/usr/bin/env python3
# ALDS_10_D: Dynamic Programming - Optimal Binary Search Tree
def optimal_cost(n, kp, dp):
sums = [sum(kp[0:i]) + sum(dp[0:i+1]) for i in range(n+1)]
expects = [[kp[i] + (dp[i] + dp[i+1])*2 for i in range(n)]]
for w in range(2, n+1):
exps = []
... | output | 1 | 62,244 | 13 | 124,489 |
Provide a correct Python 3 solution for this coding contest problem.
Optimal Binary Search Tree is a binary search tree constructed from $n$ keys and $n+1$ dummy keys so as to minimize the expected value of cost for a search operation.
We are given a sequence $K = {k_1, k_2, ..., k_n}$ of $n$ distinct keys in sorted ... | instruction | 0 | 62,245 | 13 | 124,490 |
"Correct Solution:
```
def main():
"""最適二分探索木での探索一回あたりの期待値の最小値を求める
"""
inf = 10*6
n = int(input())
# 内包よりはやい
P = [0.0] + list(map(float, input().split()))
Q = list(map(float, input().split()))
E = [[0.0]*(n+1) for _ in range(n+1)]
W = [[0.0]*(n+1) for _ in range(n+1)]
for i in ra... | output | 1 | 62,245 | 13 | 124,491 |
Provide a correct Python 3 solution for this coding contest problem.
Optimal Binary Search Tree is a binary search tree constructed from $n$ keys and $n+1$ dummy keys so as to minimize the expected value of cost for a search operation.
We are given a sequence $K = {k_1, k_2, ..., k_n}$ of $n$ distinct keys in sorted ... | instruction | 0 | 62,246 | 13 | 124,492 |
"Correct Solution:
```
if __name__ == "__main__":
num_nodes = int(input())
P = list(map(lambda x: float(x), input().split()))
Q = list(map(lambda x: float(x), input().split()))
Depth = [[0] * (num_nodes + 1) for i in range(num_nodes + 1)]
Exp = [[0.0] * (num_nodes + 1) for i in range(num_nodes + 1)... | output | 1 | 62,246 | 13 | 124,493 |
Provide a correct Python 3 solution for this coding contest problem.
Optimal Binary Search Tree is a binary search tree constructed from $n$ keys and $n+1$ dummy keys so as to minimize the expected value of cost for a search operation.
We are given a sequence $K = {k_1, k_2, ..., k_n}$ of $n$ distinct keys in sorted ... | instruction | 0 | 62,247 | 13 | 124,494 |
"Correct Solution:
```
n=int(input())
A=[0.0]+[float(i) for i in input().split()]
B=[float(i) for i in input().split()]
W={}
E={}
for i in range(1,n+2):
W[i,i-1] = B[i-1]
E[i,i-1] = B[i-1],i
for i in range(1,n+1):
for j in range(i,n+1):
W[i,j] = W[i,j-1]+A[j]+B[j]
for i in range(1,n+1):
E[i,i] =... | output | 1 | 62,247 | 13 | 124,495 |
Provide a correct Python 3 solution for this coding contest problem.
Optimal Binary Search Tree is a binary search tree constructed from $n$ keys and $n+1$ dummy keys so as to minimize the expected value of cost for a search operation.
We are given a sequence $K = {k_1, k_2, ..., k_n}$ of $n$ distinct keys in sorted ... | instruction | 0 | 62,248 | 13 | 124,496 |
"Correct Solution:
```
import sys
def input():
return sys.stdin.readline()[:-1]
n = int(input())
p = [None] + list(map(float, input().split()))
q = list(map(float, input().split()))
T = [[500 for i in range(n+1)] for j in range(n+1)]
psum = [0] * (n+1)
qsum = [0] * (n+1)
qsum[0] = q[0]
for i in range(1,n+1):
... | output | 1 | 62,248 | 13 | 124,497 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Optimal Binary Search Tree is a binary search tree constructed from $n$ keys and $n+1$ dummy keys so as to minimize the expected value of cost for a search operation.
We are given a sequence $K... | instruction | 0 | 62,249 | 13 | 124,498 |
No | output | 1 | 62,249 | 13 | 124,499 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Optimal Binary Search Tree is a binary search tree constructed from $n$ keys and $n+1$ dummy keys so as to minimize the expected value of cost for a search operation.
We are given a sequence $K... | instruction | 0 | 62,250 | 13 | 124,500 |
No | output | 1 | 62,250 | 13 | 124,501 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Optimal Binary Search Tree is a binary search tree constructed from $n$ keys and $n+1$ dummy keys so as to minimize the expected value of cost for a search operation.
We are given a sequence $K... | instruction | 0 | 62,251 | 13 | 124,502 |
No | output | 1 | 62,251 | 13 | 124,503 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Optimal Binary Search Tree is a binary search tree constructed from $n$ keys and $n+1$ dummy keys so as to minimize the expected value of cost for a search operation.
We are given a sequence $K... | instruction | 0 | 62,252 | 13 | 124,504 |
No | output | 1 | 62,252 | 13 | 124,505 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got a undirected graph G, consisting of n nodes. We will consider the nodes of the graph indexed by integers from 1 to n. We know that each node of graph G is connected by edges with at least k other nodes of this graph. Your task is ... | instruction | 0 | 62,610 | 13 | 125,220 |
Tags: dfs and similar, graphs
Correct Solution:
```
n, m, k = map(int, input().split())
d = {}
for _ in range(m):
u, v = map(int, input().split())
if u not in d:
d[u] = [v]
else:
d[u].append(v)
if v not in d:
d[v] = [u]
else:
d[v].append(u)
# print(d)
stack = []
not... | output | 1 | 62,610 | 13 | 125,221 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You've got a undirected graph G, consisting of n nodes. We will consider the nodes of the graph indexed by integers from 1 to n. We know that each node of graph G is connected by edges with at least k other nodes of this graph. Your task is ... | instruction | 0 | 62,611 | 13 | 125,222 |
Tags: dfs and similar, graphs
Correct Solution:
```
#!/usr/local/bin/python3
from __future__ import print_function
import sys
from collections import defaultdict
DEBUG = '-d' in sys.argv
def debug(*args, **kwargs):
if DEBUG:
print(*args, file=sys.stderr, **kwargs)
return None
def main():
n, m, ... | output | 1 | 62,611 | 13 | 125,223 |
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