#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include "memory.h"
#define bitcount __builtin_popcountll
using namespace std;
using namespace __gnu_pbds;
using ordered_set = tree<long long,null_type,less_equal<>,rb_tree_tag,tree_order_statistics_node_update>;
vector<pair<int,int>> adj[1000];
int mx[1000], dep[1000];
void dfs(int u, int p = -1) {
for (auto [v, w] : adj[u]) if (v != p) {
dep[v] = dep[u] + 1;
mx[v] = max(mx[u], w);
dfs(v, u);
}
}
signed main() {
ios::sync_with_stdio(false);
cin.tie(nullptr), cout.tie(nullptr);
int n,k; cin >> n >> k;
for (int i = 0; i < n-1; i++) {
int u,v,w; cin >> u >> v >> w;
u--, v--;
adj[u].emplace_back(v, w);
adj[v].emplace_back(u, w);
}
long long ans = 0;
for (int i = 0; i < n; i++) {
dep[i] = mx[i] = 0;
dfs(i);
for (int j = 0; j < n; j++) if (mx[j] - dep[j] >= k) {
ans++;
}
}
cout << ans;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
8 ms |
604 KB |
Output is correct |
5 |
Correct |
8 ms |
600 KB |
Output is correct |
6 |
Correct |
8 ms |
488 KB |
Output is correct |
7 |
Correct |
8 ms |
604 KB |
Output is correct |
8 |
Correct |
8 ms |
600 KB |
Output is correct |
9 |
Correct |
6 ms |
488 KB |
Output is correct |
10 |
Correct |
6 ms |
344 KB |
Output is correct |
11 |
Correct |
6 ms |
344 KB |
Output is correct |
12 |
Correct |
8 ms |
532 KB |
Output is correct |
13 |
Correct |
8 ms |
348 KB |
Output is correct |
14 |
Correct |
7 ms |
536 KB |
Output is correct |
15 |
Correct |
7 ms |
348 KB |
Output is correct |
16 |
Correct |
11 ms |
344 KB |
Output is correct |
17 |
Correct |
9 ms |
532 KB |
Output is correct |
18 |
Correct |
10 ms |
348 KB |
Output is correct |
19 |
Correct |
7 ms |
348 KB |
Output is correct |
20 |
Correct |
7 ms |
348 KB |
Output is correct |
21 |
Correct |
8 ms |
348 KB |
Output is correct |
22 |
Correct |
7 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
8 ms |
608 KB |
Output is correct |
5 |
Runtime error |
1 ms |
604 KB |
Execution killed with signal 11 |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
8 ms |
604 KB |
Output is correct |
5 |
Correct |
8 ms |
600 KB |
Output is correct |
6 |
Correct |
8 ms |
488 KB |
Output is correct |
7 |
Correct |
8 ms |
604 KB |
Output is correct |
8 |
Correct |
8 ms |
600 KB |
Output is correct |
9 |
Correct |
6 ms |
488 KB |
Output is correct |
10 |
Correct |
6 ms |
344 KB |
Output is correct |
11 |
Correct |
6 ms |
344 KB |
Output is correct |
12 |
Correct |
8 ms |
532 KB |
Output is correct |
13 |
Correct |
8 ms |
348 KB |
Output is correct |
14 |
Correct |
7 ms |
536 KB |
Output is correct |
15 |
Correct |
7 ms |
348 KB |
Output is correct |
16 |
Correct |
11 ms |
344 KB |
Output is correct |
17 |
Correct |
9 ms |
532 KB |
Output is correct |
18 |
Correct |
10 ms |
348 KB |
Output is correct |
19 |
Correct |
7 ms |
348 KB |
Output is correct |
20 |
Correct |
7 ms |
348 KB |
Output is correct |
21 |
Correct |
8 ms |
348 KB |
Output is correct |
22 |
Correct |
7 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
344 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
8 ms |
608 KB |
Output is correct |
27 |
Runtime error |
1 ms |
604 KB |
Execution killed with signal 11 |
28 |
Halted |
0 ms |
0 KB |
- |