답안 #372860

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
372860	2021-03-02T04:43:03 Z	sam571128	Janjetina (COCI21_janjetina)	C++14	15 / 110	1500 ms	9836 KB

Main

#include <bits/stdc++.h>

#define int long long
#define fastio ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

using namespace std;

const int N = 1e5+5;
vector<pair<int,int>> adj[N];
int ans = 0;
int dis[N], mx[N];

void dfs(int u, int par){
	for(auto [v,w] : adj[u]){
		if(v==par) continue;
		dis[v] = dis[u]+1;
		mx[v] = max(mx[u],w);
		dfs(v,u);
	}
}

signed main(){
	fastio
	int n,k;
	cin >> n >> k;
	for(int i = 0;i < n-1;i++){
		int u,v,w;
		cin >> u >> v >> w;
		adj[u].push_back({v,w});
		adj[v].push_back({u,w});
	}

	for(int i = 1;i <= n;i++){
		fill(mx,mx+n+1,0);
		dis[i] = 0;
		dfs(i,-1);
		for(int j = 1;j <= n;j++){
			if(mx[j]-dis[j] >= k&&i!=j){
				ans++;
			}
		}
	}
	cout << ans << "\n";
}

Compilation message

Main.cpp: In function 'void dfs(long long int, long long int)':
Main.cpp:14:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   14 |  for(auto [v,w] : adj[u]){
      |           ^

Subtask #1

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2668 KB	Output is correct
2	Correct	2 ms	2668 KB	Output is correct
3	Correct	2 ms	2668 KB	Output is correct
4	Correct	13 ms	2796 KB	Output is correct
5	Correct	13 ms	2796 KB	Output is correct
6	Correct	13 ms	2796 KB	Output is correct
7	Correct	13 ms	2796 KB	Output is correct
8	Correct	13 ms	2796 KB	Output is correct
9	Correct	14 ms	2796 KB	Output is correct
10	Correct	14 ms	2796 KB	Output is correct
11	Correct	15 ms	2796 KB	Output is correct
12	Correct	18 ms	2796 KB	Output is correct
13	Correct	18 ms	2816 KB	Output is correct
14	Correct	18 ms	2796 KB	Output is correct
15	Correct	18 ms	2796 KB	Output is correct
16	Correct	19 ms	2796 KB	Output is correct
17	Correct	18 ms	2796 KB	Output is correct
18	Correct	18 ms	2796 KB	Output is correct
19	Correct	18 ms	2796 KB	Output is correct
20	Correct	17 ms	2796 KB	Output is correct
21	Correct	18 ms	2796 KB	Output is correct
22	Correct	18 ms	2796 KB	Output is correct

Subtask #2

0 / 35.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2668 KB	Output is correct
2	Correct	2 ms	2668 KB	Output is correct
3	Correct	2 ms	2668 KB	Output is correct
4	Correct	13 ms	2796 KB	Output is correct
5	Correct	1094 ms	4076 KB	Output is correct
6	Execution timed out	1542 ms	9836 KB	Time limit exceeded
7	Halted	0 ms	0 KB	-

Subtask #3

0 / 60.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2668 KB	Output is correct
2	Correct	2 ms	2668 KB	Output is correct
3	Correct	2 ms	2668 KB	Output is correct
4	Correct	13 ms	2796 KB	Output is correct
5	Correct	13 ms	2796 KB	Output is correct
6	Correct	13 ms	2796 KB	Output is correct
7	Correct	13 ms	2796 KB	Output is correct
8	Correct	13 ms	2796 KB	Output is correct
9	Correct	14 ms	2796 KB	Output is correct
10	Correct	14 ms	2796 KB	Output is correct
11	Correct	15 ms	2796 KB	Output is correct
12	Correct	18 ms	2796 KB	Output is correct
13	Correct	18 ms	2816 KB	Output is correct
14	Correct	18 ms	2796 KB	Output is correct
15	Correct	18 ms	2796 KB	Output is correct
16	Correct	19 ms	2796 KB	Output is correct
17	Correct	18 ms	2796 KB	Output is correct
18	Correct	18 ms	2796 KB	Output is correct
19	Correct	18 ms	2796 KB	Output is correct
20	Correct	17 ms	2796 KB	Output is correct
21	Correct	18 ms	2796 KB	Output is correct
22	Correct	18 ms	2796 KB	Output is correct
23	Correct	2 ms	2668 KB	Output is correct
24	Correct	2 ms	2668 KB	Output is correct
25	Correct	2 ms	2668 KB	Output is correct
26	Correct	13 ms	2796 KB	Output is correct
27	Correct	1094 ms	4076 KB	Output is correct
28	Execution timed out	1542 ms	9836 KB	Time limit exceeded
29	Halted	0 ms	0 KB	-