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.
You are given a tree with N vertices numbered 1, 2, ..., N. The i-th edge connects Vertex a_i and Vertex b_i. You are also given a string S of length N consisting of `0` and `1`. The i-th charac... | instruction | 0 | 26,288 | 13 | 52,576 |
Yes | output | 1 | 26,288 | 13 | 52,577 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a tree with N vertices numbered 1, 2, ..., N. The i-th edge connects Vertex a_i and Vertex b_i. You are also given a string S of length N consisting of `0` and `1`. The i-th charac... | instruction | 0 | 26,289 | 13 | 52,578 |
No | output | 1 | 26,289 | 13 | 52,579 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a tree with N vertices numbered 1, 2, ..., N. The i-th edge connects Vertex a_i and Vertex b_i. You are also given a string S of length N consisting of `0` and `1`. The i-th charac... | instruction | 0 | 26,290 | 13 | 52,580 |
No | output | 1 | 26,290 | 13 | 52,581 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a tree with N vertices numbered 1, 2, ..., N. The i-th edge connects Vertex a_i and Vertex b_i. You are also given a string S of length N consisting of `0` and `1`. The i-th charac... | instruction | 0 | 26,291 | 13 | 52,582 |
No | output | 1 | 26,291 | 13 | 52,583 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a tree with N vertices numbered 1, 2, ..., N. The i-th edge connects Vertex a_i and Vertex b_i. You are also given a string S of length N consisting of `0` and `1`. The i-th charac... | instruction | 0 | 26,292 | 13 | 52,584 |
No | output | 1 | 26,292 | 13 | 52,585 |
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 tree, consisting of n vertices.
The vertex is called a leaf if it has exactly one vertex adjacent to it.
The distance between some pair of vertices is the number of... | instruction | 0 | 26,561 | 13 | 53,122 |
No | output | 1 | 26,561 | 13 | 53,123 |
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 tree, consisting of n vertices.
The vertex is called a leaf if it has exactly one vertex adjacent to it.
The distance between some pair of vertices is the number of... | instruction | 0 | 26,562 | 13 | 53,124 |
No | output | 1 | 26,562 | 13 | 53,125 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an undirected unweighted connected graph consisting of n vertices and m edges. It is guaranteed that there are no self-loops or multiple edges in the given graph.
Your task is to choose at most ⌊n/2⌋ vertices in this graph so ... | instruction | 0 | 26,621 | 13 | 53,242 |
Tags: dfs and similar, dsu, graphs, shortest paths, trees
Correct Solution:
```
n, m = map(int, input().split())
countn = [0] * (n+1)
g = dict()
for i in range(m):
u, v = map(int, input().split())
countn[u] += 1
countn[v] += 1
if u in g:
g[u].append(v)
else:
g[u] = [v]
if v in g:
g[v].append(u)
else:... | output | 1 | 26,621 | 13 | 53,243 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an undirected unweighted connected graph consisting of n vertices and m edges. It is guaranteed that there are no self-loops or multiple edges in the given graph.
Your task is to choose at most ⌊n/2⌋ vertices in this graph so ... | instruction | 0 | 26,622 | 13 | 53,244 |
Tags: dfs and similar, dsu, graphs, shortest paths, trees
Correct Solution:
```
def digraph_from_input():
digraph = dict()
n, m = map(int, input().split())
for t in range(m):
z1, z2 = map(int, input().split())
if z1 not in digraph:
digraph[z1] = set([z2])
else:
... | output | 1 | 26,622 | 13 | 53,245 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an undirected unweighted connected graph consisting of n vertices and m edges. It is guaranteed that there are no self-loops or multiple edges in the given graph.
Your task is to choose at most ⌊n/2⌋ vertices in this graph so ... | instruction | 0 | 26,623 | 13 | 53,246 |
Tags: dfs and similar, dsu, graphs, shortest paths, trees
Correct Solution:
```
n,m=map(int,input().split())
adj=[0]*(n+1)
for i in range(n+1):
adj[i]=[]
s=0
for i in range(m):
x,y=map(int,input().split())
adj[x].append(y)
adj[y].append(x)
if len(adj[x])>len(adj[s]):
s=x
if len(adj[y])>len(adj[s]):
s=y
stk=[]... | output | 1 | 26,623 | 13 | 53,247 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an undirected unweighted connected graph consisting of n vertices and m edges. It is guaranteed that there are no self-loops or multiple edges in the given graph.
Your task is to choose at most ⌊n/2⌋ vertices in this graph so ... | instruction | 0 | 26,624 | 13 | 53,248 |
Tags: dfs and similar, dsu, graphs, shortest paths, trees
Correct Solution:
```
# -*- coding: utf-8 -*-
import sys
def input(): return sys.stdin.readline().strip()
def list2d(a, b, c): return [[c] * b for i in range(a)]
def list3d(a, b, c, d): return [[[d] * c for j in range(b)] for i in range(a)]
def list4d(a, b, c,... | output | 1 | 26,624 | 13 | 53,249 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an undirected unweighted connected graph consisting of n vertices and m edges. It is guaranteed that there are no self-loops or multiple edges in the given graph.
Your task is to choose at most ⌊n/2⌋ vertices in this graph so ... | instruction | 0 | 26,625 | 13 | 53,250 |
Tags: dfs and similar, dsu, graphs, shortest paths, trees
Correct Solution:
```
#import sys
#sys.stdin = open('input.txt')
n, m = map(int, input().split())
ar = [[] for i in range(n + 1)]
mx = [0] * (n + 1)
for i in range(m):
x, y = map(int, input().split())
mx[x] += 1
mx[y] += 1
ar[x].appe... | output | 1 | 26,625 | 13 | 53,251 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an undirected unweighted connected graph consisting of n vertices and m edges. It is guaranteed that there are no self-loops or multiple edges in the given graph.
Your task is to choose at most ⌊n/2⌋ vertices in this graph so ... | instruction | 0 | 26,626 | 13 | 53,252 |
Tags: dfs and similar, dsu, graphs, shortest paths, trees
Correct Solution:
```
######################################################################
# Write your code here
import sys
input = sys.stdin.readline
#import resource
#resource.setrlimit(resource.RLIMIT_STACK, [0x10000000, resource.RLIM_INFINITY])
#sys.setre... | output | 1 | 26,626 | 13 | 53,253 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an undirected unweighted connected graph consisting of n vertices and m edges. It is guaranteed that there are no self-loops or multiple edges in the given graph.
Your task is to choose at most ⌊n/2⌋ vertices in this graph so ... | instruction | 0 | 26,627 | 13 | 53,254 |
Tags: dfs and similar, dsu, graphs, shortest paths, trees
Correct Solution:
```
# 1133F1
import collections
def do():
graph = collections.defaultdict(list)
nodes, edges = map(int, input().split(" "))
ind = [0] * (nodes + 1)
for _ in range(edges):
x, y = map(int, input().split(" "))
graph... | output | 1 | 26,627 | 13 | 53,255 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an undirected unweighted connected graph consisting of n vertices and m edges. It is guaranteed that there are no self-loops or multiple edges in the given graph.
Your task is to choose at most ⌊n/2⌋ vertices in this graph so ... | instruction | 0 | 26,628 | 13 | 53,256 |
Tags: dfs and similar, dsu, graphs, shortest paths, trees
Correct Solution:
```
# TAIWAN NUMBER ONE!!!!!!!!!!!!!!!!!!!
# TAIWAN NUMBER ONE!!!!!!!!!!!!!!!!!!!
# TAIWAN NUMBER ONE!!!!!!!!!!!!!!!!!!!
# TAIWAN NUMBER ONE!!!!!!!!!!!!!!!!!!!
# TAIWAN NUMBER ONE!!!!!!!!!!!!!!!!!!!
# TAIWAN NUMBER ONE!!!!!!!!!!!!!!!!!!!
# TAIW... | output | 1 | 26,628 | 13 | 53,257 |
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 unweighted connected graph consisting of n vertices and m edges. It is guaranteed that there are no self-loops or multiple edges in the given graph.
Your task is to ... | instruction | 0 | 26,629 | 13 | 53,258 |
Yes | output | 1 | 26,629 | 13 | 53,259 |
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 unweighted connected graph consisting of n vertices and m edges. It is guaranteed that there are no self-loops or multiple edges in the given graph.
Your task is to ... | instruction | 0 | 26,630 | 13 | 53,260 |
Yes | output | 1 | 26,630 | 13 | 53,261 |
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 unweighted connected graph consisting of n vertices and m edges. It is guaranteed that there are no self-loops or multiple edges in the given graph.
Your task is to ... | instruction | 0 | 26,631 | 13 | 53,262 |
Yes | output | 1 | 26,631 | 13 | 53,263 |
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 unweighted connected graph consisting of n vertices and m edges. It is guaranteed that there are no self-loops or multiple edges in the given graph.
Your task is to ... | instruction | 0 | 26,632 | 13 | 53,264 |
Yes | output | 1 | 26,632 | 13 | 53,265 |
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 unweighted connected graph consisting of n vertices and m edges. It is guaranteed that there are no self-loops or multiple edges in the given graph.
Your task is to ... | instruction | 0 | 26,633 | 13 | 53,266 |
No | output | 1 | 26,633 | 13 | 53,267 |
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 unweighted connected graph consisting of n vertices and m edges. It is guaranteed that there are no self-loops or multiple edges in the given graph.
Your task is to ... | instruction | 0 | 26,634 | 13 | 53,268 |
No | output | 1 | 26,634 | 13 | 53,269 |
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 unweighted connected graph consisting of n vertices and m edges. It is guaranteed that there are no self-loops or multiple edges in the given graph.
Your task is to ... | instruction | 0 | 26,635 | 13 | 53,270 |
No | output | 1 | 26,635 | 13 | 53,271 |
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 unweighted connected graph consisting of n vertices and m edges. It is guaranteed that there are no self-loops or multiple edges in the given graph.
Your task is to ... | instruction | 0 | 26,636 | 13 | 53,272 |
No | output | 1 | 26,636 | 13 | 53,273 |
Provide a correct Python 3 solution for this coding contest problem.
Given an undirected weighted graph G, you should find one of spanning trees specified as follows.
The graph G is an ordered pair (V, E), where V is a set of vertices {v1, v2, ... , vn} and E is a set of undirected edges {e1, e2, ... , em}. Each edge... | instruction | 0 | 27,342 | 13 | 54,684 |
"Correct Solution:
```
import math,string,itertools,fractions,heapq,collections,re,array,bisect,sys,random,time,copy,functools
sys.setrecursionlimit(10**7)
inf = 10**20
eps = 1.0 / 10**10
mod = 10**9+7
dd = [(-1,0),(0,1),(1,0),(0,-1)]
ddn = [(-1,0),(-1,1),(0,1),(1,1),(1,0),(1,-1),(0,-1),(-1,-1)]
def LI(): return [int... | output | 1 | 27,342 | 13 | 54,685 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given a tree with n nodes. You have to write non-negative integers on its edges so that the following condition would be satisfied:
For every two nodes i, j, look at the path between them and count the sum of numbers on the edges of... | instruction | 0 | 27,493 | 13 | 54,986 |
Tags: constructive algorithms, trees
Correct Solution:
```
import math
n = int(input())
if n == 1:
print()
else:
edge = [list(map(int, input().split())) for i in range(1, n) ]
g = {}
for x, y in edge:
if x not in g:
g[x] = []
if y not in g:
g[y] = []
... | output | 1 | 27,493 | 13 | 54,987 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a tree with n nodes. You have to write non-negative integers on its edges so that the following condition would be satisfied:
For every two nodes i, j, look at the path between th... | instruction | 0 | 27,494 | 13 | 54,988 |
No | output | 1 | 27,494 | 13 | 54,989 |
Provide tags and a correct Python 3 solution for this coding contest problem.
John Doe started thinking about graphs. After some thought he decided that he wants to paint an undirected graph, containing exactly k cycles of length 3.
A cycle of length 3 is an unordered group of three distinct graph vertices a, b and ... | instruction | 0 | 27,713 | 13 | 55,426 |
Tags: binary search, constructive algorithms, graphs, greedy
Correct Solution:
```
n, k = 0, int(input())
p = [['0'] * 100 for i in range(100)]
while k:
for i in range(n):
if i > k: break
p[n][i] = p[i][n] = '1'
k -= i
n += 1
print(n)
for i in range(n): print(''.join(p[i][:n]))
... | output | 1 | 27,713 | 13 | 55,427 |
Provide tags and a correct Python 3 solution for this coding contest problem.
John Doe started thinking about graphs. After some thought he decided that he wants to paint an undirected graph, containing exactly k cycles of length 3.
A cycle of length 3 is an unordered group of three distinct graph vertices a, b and ... | instruction | 0 | 27,714 | 13 | 55,428 |
Tags: binary search, constructive algorithms, graphs, greedy
Correct Solution:
```
# https://codeforces.com/contest/232/problem/A
# WA
def f_3(n):
return n * (n-1) * (n-2) // 6
def f_2(n):
return n * (n-1) // 2
a_3 = [f_3(i) for i in range(100)]
a_2 = [f_2(i) for i in range(100)]
def find_2(x, a):
... | output | 1 | 27,714 | 13 | 55,429 |
Provide tags and a correct Python 3 solution for this coding contest problem.
John Doe started thinking about graphs. After some thought he decided that he wants to paint an undirected graph, containing exactly k cycles of length 3.
A cycle of length 3 is an unordered group of three distinct graph vertices a, b and ... | instruction | 0 | 27,715 | 13 | 55,430 |
Tags: binary search, constructive algorithms, graphs, greedy
Correct Solution:
```
import sys
import math
c=int(input())
Ans=[]
F=[1]
for i in range(1,101):
F.append(F[-1]*i)
for i in range(100):
Ans.append([0]*100)
print(100)
cycles=1
Ans[0][1]=1
Ans[1][0]=1
Ans[1][2]=1
Ans[2][1]=1
Ans[0][2]=1
Ans[2][0]=1
... | output | 1 | 27,715 | 13 | 55,431 |
Provide tags and a correct Python 3 solution for this coding contest problem.
John Doe started thinking about graphs. After some thought he decided that he wants to paint an undirected graph, containing exactly k cycles of length 3.
A cycle of length 3 is an unordered group of three distinct graph vertices a, b and ... | instruction | 0 | 27,716 | 13 | 55,432 |
Tags: binary search, constructive algorithms, graphs, greedy
Correct Solution:
```
n = 100
g = [set() for i in range(n)]
k = int(input())
ans = 0
flag = False
for l in range(n):
for r in range(l + 1):
if l == r or l in g[r]:
continue
count = 0
for u in range(n):
if u ... | output | 1 | 27,716 | 13 | 55,433 |
Provide tags and a correct Python 3 solution for this coding contest problem.
John Doe started thinking about graphs. After some thought he decided that he wants to paint an undirected graph, containing exactly k cycles of length 3.
A cycle of length 3 is an unordered group of three distinct graph vertices a, b and ... | instruction | 0 | 27,717 | 13 | 55,434 |
Tags: binary search, constructive algorithms, graphs, greedy
Correct Solution:
```
k = int(input())
n = 0
matr = [['0'] * 100 for i in range(100)]
while k:
for i in range(n):
if i > k:
break
matr[n][i] = matr[i][n] = '1'
k -= i
n += 1
print(n)
for i in range(n):
print(''.... | output | 1 | 27,717 | 13 | 55,435 |
Provide tags and a correct Python 3 solution for this coding contest problem.
John Doe started thinking about graphs. After some thought he decided that he wants to paint an undirected graph, containing exactly k cycles of length 3.
A cycle of length 3 is an unordered group of three distinct graph vertices a, b and ... | instruction | 0 | 27,718 | 13 | 55,436 |
Tags: binary search, constructive algorithms, graphs, greedy
Correct Solution:
```
n, k = 0, int(input())
p = [['0'] * 100 for i in range(100)]
while k:
for i in range(n):
if i > k: break
p[n][i] = p[i][n] = '1'
k -= i
n += 1
print(n)
for i in range(n): print(''.join(p[i][:n]))
``` | output | 1 | 27,718 | 13 | 55,437 |
Provide tags and a correct Python 3 solution for this coding contest problem.
John Doe started thinking about graphs. After some thought he decided that he wants to paint an undirected graph, containing exactly k cycles of length 3.
A cycle of length 3 is an unordered group of three distinct graph vertices a, b and ... | instruction | 0 | 27,719 | 13 | 55,438 |
Tags: binary search, constructive algorithms, graphs, greedy
Correct Solution:
```
n = int( input() )
a = []
MAXN = 100
for i in range(MAXN):
a.append( [0]*MAXN )
for i in range(3):
for j in range(3):
if i != j:
a[i][j] = 1
cycles = 1
if cycles != n:
for i in range(3,MAXN):
... | output | 1 | 27,719 | 13 | 55,439 |
Provide tags and a correct Python 3 solution for this coding contest problem.
John Doe started thinking about graphs. After some thought he decided that he wants to paint an undirected graph, containing exactly k cycles of length 3.
A cycle of length 3 is an unordered group of three distinct graph vertices a, b and ... | instruction | 0 | 27,720 | 13 | 55,440 |
Tags: binary search, constructive algorithms, graphs, greedy
Correct Solution:
```
start, k = 0, int(input())
lst = [['0'] * 100 for i in range(100)]
while k>0:
for i in range(start):
if i >k:
break
lst[start][i] = lst[i][start] = '1'
k -= i
start += 1
print(start... | output | 1 | 27,720 | 13 | 55,441 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
John Doe started thinking about graphs. After some thought he decided that he wants to paint an undirected graph, containing exactly k cycles of length 3.
A cycle of length 3 is an unordered g... | instruction | 0 | 27,721 | 13 | 55,442 |
Yes | output | 1 | 27,721 | 13 | 55,443 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
John Doe started thinking about graphs. After some thought he decided that he wants to paint an undirected graph, containing exactly k cycles of length 3.
A cycle of length 3 is an unordered g... | instruction | 0 | 27,722 | 13 | 55,444 |
Yes | output | 1 | 27,722 | 13 | 55,445 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
John Doe started thinking about graphs. After some thought he decided that he wants to paint an undirected graph, containing exactly k cycles of length 3.
A cycle of length 3 is an unordered g... | instruction | 0 | 27,723 | 13 | 55,446 |
Yes | output | 1 | 27,723 | 13 | 55,447 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
John Doe started thinking about graphs. After some thought he decided that he wants to paint an undirected graph, containing exactly k cycles of length 3.
A cycle of length 3 is an unordered g... | instruction | 0 | 27,724 | 13 | 55,448 |
Yes | output | 1 | 27,724 | 13 | 55,449 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
John Doe started thinking about graphs. After some thought he decided that he wants to paint an undirected graph, containing exactly k cycles of length 3.
A cycle of length 3 is an unordered g... | instruction | 0 | 27,725 | 13 | 55,450 |
No | output | 1 | 27,725 | 13 | 55,451 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
John Doe started thinking about graphs. After some thought he decided that he wants to paint an undirected graph, containing exactly k cycles of length 3.
A cycle of length 3 is an unordered g... | instruction | 0 | 27,726 | 13 | 55,452 |
No | output | 1 | 27,726 | 13 | 55,453 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
John Doe started thinking about graphs. After some thought he decided that he wants to paint an undirected graph, containing exactly k cycles of length 3.
A cycle of length 3 is an unordered g... | instruction | 0 | 27,727 | 13 | 55,454 |
No | output | 1 | 27,727 | 13 | 55,455 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
John Doe started thinking about graphs. After some thought he decided that he wants to paint an undirected graph, containing exactly k cycles of length 3.
A cycle of length 3 is an unordered g... | instruction | 0 | 27,728 | 13 | 55,456 |
No | output | 1 | 27,728 | 13 | 55,457 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Tree is a connected acyclic graph. Suppose you are given a tree consisting of n vertices. The vertex of this tree is called centroid if the size of each connected component that appears if this ... | instruction | 0 | 27,926 | 13 | 55,852 |
No | output | 1 | 27,926 | 13 | 55,853 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Tree is a connected acyclic graph. Suppose you are given a tree consisting of n vertices. The vertex of this tree is called centroid if the size of each connected component that appears if this ... | instruction | 0 | 27,927 | 13 | 55,854 |
No | output | 1 | 27,927 | 13 | 55,855 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Tree is a connected acyclic graph. Suppose you are given a tree consisting of n vertices. The vertex of this tree is called centroid if the size of each connected component that appears if this ... | instruction | 0 | 27,928 | 13 | 55,856 |
No | output | 1 | 27,928 | 13 | 55,857 |
Provide a correct Python 3 solution for this coding contest problem.
We have N points numbered 1 to N arranged in a line in this order.
Takahashi decides to make an undirected graph, using these points as the vertices. In the beginning, the graph has no edge. Takahashi will do M operations to add edges in this graph.... | instruction | 0 | 28,048 | 13 | 56,096 |
"Correct Solution:
```
N, M = map(int, input().split())
LRC = sorted([list(map(int, input().split())) for i in range(M)])
inf = float('inf')
dp = [inf] * (N+1)
dp[1] = 0
for l, r, c in LRC:
for i in range(r, l, -1):
if dp[i] > dp[l]+c:
dp[i] = dp[l]+c
else:
break
if dp[-1] ... | output | 1 | 28,048 | 13 | 56,097 |
Provide a correct Python 3 solution for this coding contest problem.
We have N points numbered 1 to N arranged in a line in this order.
Takahashi decides to make an undirected graph, using these points as the vertices. In the beginning, the graph has no edge. Takahashi will do M operations to add edges in this graph.... | instruction | 0 | 28,049 | 13 | 56,098 |
"Correct Solution:
```
import sys
import heapq
input = sys.stdin.readline
sys.setrecursionlimit(10 ** 7)
INF = 10**20
N, M = map(int, input().split())
G = [[]for i in range(N)]
for i in range(1, N):
G[i].append([i-1, 0])
for i in range(M):
L, R, C = map(int, input().split())
G[L-1].append([R-1, C])
S = 0... | output | 1 | 28,049 | 13 | 56,099 |
Provide a correct Python 3 solution for this coding contest problem.
We have N points numbered 1 to N arranged in a line in this order.
Takahashi decides to make an undirected graph, using these points as the vertices. In the beginning, the graph has no edge. Takahashi will do M operations to add edges in this graph.... | instruction | 0 | 28,050 | 13 | 56,100 |
"Correct Solution:
```
from heapq import heappush, heappop
INF = float("inf")
N, M, *LRC = map(int, open(0).read().split())
E = [[] for _ in range(N)]
for i in range(N - 1):
E[i + 1].append((i, 0))
for l, r, c in zip(*[iter(LRC)] * 3):
E[l - 1].append((r - 1, c))
D = [INF] * N
D[0] = 0
Q = [0]
while Q:
... | output | 1 | 28,050 | 13 | 56,101 |
Provide a correct Python 3 solution for this coding contest problem.
We have N points numbered 1 to N arranged in a line in this order.
Takahashi decides to make an undirected graph, using these points as the vertices. In the beginning, the graph has no edge. Takahashi will do M operations to add edges in this graph.... | instruction | 0 | 28,051 | 13 | 56,102 |
"Correct Solution:
```
#設定
import sys
input = sys.stdin.buffer.readline
INF = float("inf")
#ライブラリインポート
from collections import defaultdict
from heapq import heappop, heappush
#入力受け取り
def getlist():
return list(map(int, input().split()))
class Graph(object):
def __init__(self):
self.graph = defaultdict(list)
de... | output | 1 | 28,051 | 13 | 56,103 |
Provide a correct Python 3 solution for this coding contest problem.
We have N points numbered 1 to N arranged in a line in this order.
Takahashi decides to make an undirected graph, using these points as the vertices. In the beginning, the graph has no edge. Takahashi will do M operations to add edges in this graph.... | instruction | 0 | 28,052 | 13 | 56,104 |
"Correct Solution:
```
import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
n,m = map(int,readline().split())
chk = []
for i in range(m):
l,r,c = map(int,readline().split())
chk.append((l-1,r-1,c))
chk.sort()
class SegmentTree:
def __init__(self... | output | 1 | 28,052 | 13 | 56,105 |
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