#include<bits/stdc++.h>
using namespace std;
long long n, k, cnt = 0, sum, height;
vector<pair<int, int>> vec[100001];
bool check = 0;
void dfs(int x, int p, int len, int h)
{
if(len - h >= k) ++cnt;
for(pair<int, int> c : vec[x]) if(c.first != p) dfs(c.first, x, max(len, c.second), h + 1);
}
int main()
{
ios::sync_with_stdio (false);
cin.tie (0); cout.tie (0);
cin >> n >> k;
for(int i = 1; i < n; ++i)
{
long long x, y, z;
cin >> x >> y >> z;
vec[x].push_back({y, z});
vec[y].push_back({x, z});
}
for(int i = 1; i <= n; ++i)
{
dfs(i, 0, 0, 0);
}
cout << cnt;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2644 KB |
Output is correct |
2 |
Correct |
2 ms |
2644 KB |
Output is correct |
3 |
Correct |
1 ms |
2644 KB |
Output is correct |
4 |
Correct |
7 ms |
2644 KB |
Output is correct |
5 |
Correct |
7 ms |
2760 KB |
Output is correct |
6 |
Correct |
8 ms |
2644 KB |
Output is correct |
7 |
Correct |
8 ms |
2764 KB |
Output is correct |
8 |
Correct |
7 ms |
2760 KB |
Output is correct |
9 |
Correct |
6 ms |
2644 KB |
Output is correct |
10 |
Correct |
7 ms |
2712 KB |
Output is correct |
11 |
Correct |
6 ms |
2716 KB |
Output is correct |
12 |
Correct |
9 ms |
2704 KB |
Output is correct |
13 |
Correct |
7 ms |
2644 KB |
Output is correct |
14 |
Correct |
7 ms |
2644 KB |
Output is correct |
15 |
Correct |
7 ms |
2704 KB |
Output is correct |
16 |
Correct |
7 ms |
2712 KB |
Output is correct |
17 |
Correct |
7 ms |
2644 KB |
Output is correct |
18 |
Correct |
9 ms |
2684 KB |
Output is correct |
19 |
Correct |
7 ms |
2644 KB |
Output is correct |
20 |
Correct |
7 ms |
2644 KB |
Output is correct |
21 |
Correct |
8 ms |
2644 KB |
Output is correct |
22 |
Correct |
7 ms |
2644 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2644 KB |
Output is correct |
2 |
Correct |
1 ms |
2608 KB |
Output is correct |
3 |
Correct |
1 ms |
2644 KB |
Output is correct |
4 |
Correct |
8 ms |
2760 KB |
Output is correct |
5 |
Correct |
646 ms |
3616 KB |
Output is correct |
6 |
Execution timed out |
1559 ms |
8148 KB |
Time limit exceeded |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2644 KB |
Output is correct |
2 |
Correct |
2 ms |
2644 KB |
Output is correct |
3 |
Correct |
1 ms |
2644 KB |
Output is correct |
4 |
Correct |
7 ms |
2644 KB |
Output is correct |
5 |
Correct |
7 ms |
2760 KB |
Output is correct |
6 |
Correct |
8 ms |
2644 KB |
Output is correct |
7 |
Correct |
8 ms |
2764 KB |
Output is correct |
8 |
Correct |
7 ms |
2760 KB |
Output is correct |
9 |
Correct |
6 ms |
2644 KB |
Output is correct |
10 |
Correct |
7 ms |
2712 KB |
Output is correct |
11 |
Correct |
6 ms |
2716 KB |
Output is correct |
12 |
Correct |
9 ms |
2704 KB |
Output is correct |
13 |
Correct |
7 ms |
2644 KB |
Output is correct |
14 |
Correct |
7 ms |
2644 KB |
Output is correct |
15 |
Correct |
7 ms |
2704 KB |
Output is correct |
16 |
Correct |
7 ms |
2712 KB |
Output is correct |
17 |
Correct |
7 ms |
2644 KB |
Output is correct |
18 |
Correct |
9 ms |
2684 KB |
Output is correct |
19 |
Correct |
7 ms |
2644 KB |
Output is correct |
20 |
Correct |
7 ms |
2644 KB |
Output is correct |
21 |
Correct |
8 ms |
2644 KB |
Output is correct |
22 |
Correct |
7 ms |
2644 KB |
Output is correct |
23 |
Correct |
1 ms |
2644 KB |
Output is correct |
24 |
Correct |
1 ms |
2608 KB |
Output is correct |
25 |
Correct |
1 ms |
2644 KB |
Output is correct |
26 |
Correct |
8 ms |
2760 KB |
Output is correct |
27 |
Correct |
646 ms |
3616 KB |
Output is correct |
28 |
Execution timed out |
1559 ms |
8148 KB |
Time limit exceeded |
29 |
Halted |
0 ms |
0 KB |
- |