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Submission #1115810

# Submission time Handle Problem Language Result Execution time Memory
1115810 2024-11-21T01:37:49 Z gustavo_d Duathlon (APIO18_duathlon) C++17
23 / 100
 1000 ms 1048576 KB 
// https://oj.uz/problem/view/APIO18_duathlon > p520
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
const int MAXN = 1e5;
vector<int> adj[MAXN];
ll sz[MAXN]; ll sum_dist[MAXN];
bool vis[MAXN];
ll ans = 0;

void dfs(int v, int pai) {
	vis[v] = true;
	sz[v] = 1; sum_dist[v] = 0;
	for (int viz : adj[v]) {
		if (viz == pai) continue;
		dfs(viz, v);
		sz[v] += sz[viz];
		sum_dist[v] += sum_dist[viz] + sz[viz];
	}

	ll add = 0;
	for (int viz : adj[v]) {
		if (viz == pai) continue;
		ans += 2LL*sum_dist[viz]; // lca sendo ponta
		ans += 2LL*sum_dist[viz] * (sz[v] - sz[viz] - 1LL);
		add += 2LL*sz[viz] * (sz[v] - sz[viz] - 1LL);
	}
	ans += add / 2;
}

int main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL);

	int n, m; cin >> n >> m;
	for (int i=0; i<m; i++) {
		int u, v; cin >> u >> v;
		u--; v--;
		adj[u].push_back(v);
		adj[v].push_back(u);
	}
	for (int i=0; i<n; i++) {
		if (vis[i]) continue;
		dfs(i, -1);
	}
	cout << ans << '\n';

	return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 921 ms 1048576 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Runtime error 921 ms 1048576 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1094 ms 742472 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4176 KB Output is correct
2 Correct 3 ms 4176 KB Output is correct
3 Correct 3 ms 4176 KB Output is correct
4 Correct 3 ms 4348 KB Output is correct
5 Correct 2 ms 4300 KB Output is correct
6 Correct 3 ms 4176 KB Output is correct
7 Correct 3 ms 4484 KB Output is correct
8 Correct 3 ms 4176 KB Output is correct
9 Correct 2 ms 4176 KB Output is correct
10 Correct 3 ms 4360 KB Output is correct
11 Correct 3 ms 4344 KB Output is correct
12 Correct 3 ms 4176 KB Output is correct
13 Correct 2 ms 4176 KB Output is correct
14 Correct 3 ms 4176 KB Output is correct
15 Correct 3 ms 4432 KB Output is correct
16 Correct 3 ms 4176 KB Output is correct
17 Correct 3 ms 4344 KB Output is correct
18 Correct 2 ms 4176 KB Output is correct
19 Correct 3 ms 4176 KB Output is correct
20 Correct 3 ms 4176 KB Output is correct

Subtask #5
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 7696 KB Output is correct
2 Correct 42 ms 8264 KB Output is correct
3 Correct 32 ms 8784 KB Output is correct
4 Correct 42 ms 9032 KB Output is correct
5 Correct 34 ms 8776 KB Output is correct
6 Correct 46 ms 13920 KB Output is correct
7 Correct 37 ms 12104 KB Output is correct
8 Correct 38 ms 11336 KB Output is correct
9 Correct 44 ms 10360 KB Output is correct
10 Correct 41 ms 8468 KB Output is correct
11 Correct 30 ms 8784 KB Output is correct
12 Correct 30 ms 8784 KB Output is correct
13 Correct 35 ms 8784 KB Output is correct
14 Correct 26 ms 8524 KB Output is correct
15 Correct 27 ms 8264 KB Output is correct
16 Correct 23 ms 7248 KB Output is correct
17 Correct 22 ms 9024 KB Output is correct
18 Correct 23 ms 9032 KB Output is correct
19 Correct 24 ms 9076 KB Output is correct
20 Correct 23 ms 9040 KB Output is correct

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4176 KB Output is correct
2 Correct 3 ms 4432 KB Output is correct
3 Runtime error 914 ms 1048576 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 7496 KB Output is correct
2 Correct 37 ms 8776 KB Output is correct
3 Execution timed out 1046 ms 1048576 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Runtime error 921 ms 1048576 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 921 ms 1048576 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -