#include <bits/stdc++.h>
#include<vector>
#define rep(i, n) for(int i=0; i<n; i++)
#define pii pair<int, ll>
#define ll long long
using namespace std;
ll TARGET;
const int INF = 1e9;
int BEST;
vector<vector<pii>> graph;
void DFS(int p, int node, ll w, int lenght){
if(w > TARGET) return;
if(w == TARGET) BEST = min(BEST,lenght);
for(auto &e: graph[node])
{
if(e.first == p) continue;
DFS(node, e.first, w + e.second, lenght + 1);
}
}
int best_path(int N, int K, int H[][2], int L[]){
graph.assign(N,vector<pii>{});
TARGET = K;
int a, b, l;
for(int i=0; i<N-1; i++)
{
a = H[i][0]; b = H[i][1]; l = L[i];
graph[a].push_back({b,l});
graph[b].push_back({a,l});
}
BEST = INF;
for(int i=0; i<N-1; i++) DFS(-1,i,0,0);
if(BEST == INF) return -1;
return BEST;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2480 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2396 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2480 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 19 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 20 |
Correct |
1 ms |
2500 KB |
Output is correct |
| 21 |
Correct |
7 ms |
2396 KB |
Output is correct |
| 22 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
2 ms |
2392 KB |
Output is correct |
| 25 |
Correct |
9 ms |
2396 KB |
Output is correct |
| 26 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 27 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 28 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 29 |
Correct |
5 ms |
2396 KB |
Output is correct |
| 30 |
Correct |
6 ms |
2396 KB |
Output is correct |
| 31 |
Correct |
7 ms |
2500 KB |
Output is correct |
| 32 |
Correct |
7 ms |
2584 KB |
Output is correct |
| 33 |
Correct |
7 ms |
2396 KB |
Output is correct |
| 34 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 35 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 36 |
Correct |
2 ms |
2652 KB |
Output is correct |
| 37 |
Correct |
6 ms |
2432 KB |
Output is correct |
| 38 |
Correct |
7 ms |
2396 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2480 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 19 |
Correct |
2297 ms |
13652 KB |
Output is correct |
| 20 |
Correct |
1891 ms |
13648 KB |
Output is correct |
| 21 |
Execution timed out |
3051 ms |
13260 KB |
Time limit exceeded |
| 22 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2480 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 19 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 20 |
Correct |
1 ms |
2500 KB |
Output is correct |
| 21 |
Correct |
7 ms |
2396 KB |
Output is correct |
| 22 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
2 ms |
2392 KB |
Output is correct |
| 25 |
Correct |
9 ms |
2396 KB |
Output is correct |
| 26 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 27 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 28 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 29 |
Correct |
5 ms |
2396 KB |
Output is correct |
| 30 |
Correct |
6 ms |
2396 KB |
Output is correct |
| 31 |
Correct |
7 ms |
2500 KB |
Output is correct |
| 32 |
Correct |
7 ms |
2584 KB |
Output is correct |
| 33 |
Correct |
7 ms |
2396 KB |
Output is correct |
| 34 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 35 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 36 |
Correct |
2 ms |
2652 KB |
Output is correct |
| 37 |
Correct |
6 ms |
2432 KB |
Output is correct |
| 38 |
Correct |
7 ms |
2396 KB |
Output is correct |
| 39 |
Correct |
2297 ms |
13652 KB |
Output is correct |
| 40 |
Correct |
1891 ms |
13648 KB |
Output is correct |
| 41 |
Execution timed out |
3051 ms |
13260 KB |
Time limit exceeded |
| 42 |
Halted |
0 ms |
0 KB |
- |
