#include <bits/stdc++.h>
#include "dreaming.h"
using namespace std;
#define pii pair<int, int>
#define f first
#define s second
const int mx = 1e5 + 5, inf = 1e9;
vector<pair<int, int>> adj[mx]; pii in[mx]; bool vis[mx];
void dfs1(int i, int p){
vis[i] = 1;
for (auto [x, w] : adj[i]) if (x != p){
dfs1(x, i);
if (in[x].f + w > in[i].f) in[i].s = in[i].f, in[i].f = in[x].f + w;
else if (in[x].f + w > in[i].s) in[i].s = in[x].f + w;
}
}
void dfs2(int i, int p, int pout, int &far){
far = min(far, pout + in[i].f);
for (auto [x, w] : adj[i]) if (x != p){
int sib = (in[i].f == in[x].f + w) ? in[i].s : in[i].f;
int out = max(sib + in[x].f + w, far);
dfs2(x, i, out, far);
}
}
int travelTime(int n, int m, int l, int A[], int B[], int T[]){
for (int i = 0; i < m; i++){
adj[A[i]].push_back({B[i], T[i]});
adj[B[i]].push_back({A[i], T[i]});
}
int w[3] = {-inf, -inf, -inf};
for (int i = 1, far; i <= n; i++) if (!vis[i]){
dfs1(i, 0); dfs2(i, 0, 0, far);
if (far > w[0]) w[2] = w[1], w[1] = w[0], w[0] = far;
else if (far > w[1]) w[2] = w[1], w[1] = far;
else if (far > w[2]) w[2] = far;
}
return max(w[1] + w[2] + l * 2, w[0] + w[1] + l);
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
52 ms |
14020 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
2636 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
52 ms |
14020 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
20 ms |
6156 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
2636 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
52 ms |
14020 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |