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Submission #927761

# Submission time Handle Problem Language Result Execution time Memory
927761 2024-02-15T10:03:34 Z TAhmed33 Duathlon (APIO18_duathlon) C++
0 / 100
 950 ms 1048576 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
int n;
vector <int> adj[300001];
int sze[300001];
bool vis[300001];
void calc (int pos, int par) {
  	vis[pos] = 1;
	for (auto j : adj[pos]) {
		if (j == par) continue;
		calc(j, pos);
		sze[pos] += sze[j];
	}
	sze[pos]++;
}
int ans = 0;
void dfs (int pos, int par) {
  	vis[pos] = 1;
    ans += 2 * (n - sze[pos]) * (sze[pos] - 1);
    int cur = 0;
    for (auto j : adj[pos]) {
        if (j == par) continue;
        ans += 2 * sze[j] * cur;
        cur += sze[j];
        dfs(j, pos);
    }
}
signed main () {
    cin >> n; int m; cin >> m;
    for (int i = 1; i < n; i++) {
	    int a, b;
	    cin >> a >> b;
	    adj[a].push_back(b);
	    adj[b].push_back(a);
    }
    for (int i = 1; i <= n; i++) if (!vis[i]) calc(i, -1);
    memset(vis, 0, sizeof(vis));
  	for (int i = 1; i <= n; i++) if (!vis[i]) dfs(i, -1);
  	cout << ans << '\n';
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 787 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 787 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 Incorrect 86 ms 17508 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 10076 KB Output is correct
2 Correct 3 ms 10072 KB Output is correct
3 Correct 3 ms 10076 KB Output is correct
4 Correct 3 ms 10072 KB Output is correct
5 Correct 3 ms 10076 KB Output is correct
6 Correct 3 ms 10076 KB Output is correct
7 Correct 3 ms 10076 KB Output is correct
8 Correct 3 ms 10076 KB Output is correct
9 Correct 3 ms 10072 KB Output is correct
10 Incorrect 4 ms 10076 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 13660 KB Output is correct
2 Correct 55 ms 13904 KB Output is correct
3 Correct 56 ms 13736 KB Output is correct
4 Correct 58 ms 13660 KB Output is correct
5 Correct 68 ms 13620 KB Output is correct
6 Correct 66 ms 16464 KB Output is correct
7 Correct 82 ms 16100 KB Output is correct
8 Correct 59 ms 15356 KB Output is correct
9 Correct 66 ms 14672 KB Output is correct
10 Incorrect 67 ms 13676 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 10072 KB Output is correct
2 Correct 3 ms 10076 KB Output is correct
3 Runtime error 577 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 68 ms 13812 KB Output is correct
2 Correct 66 ms 13652 KB Output is correct
3 Runtime error 950 ms 1048576 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Runtime error 787 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 787 ms 1048576 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -