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Submission #927755

# Submission time Handle Problem Language Result Execution time Memory
927755 2024-02-15T09:56:56 Z TAhmed33 Duathlon (APIO18_duathlon) C++
0 / 100
 1000 ms 1048576 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
int n;
vector <int> adj[200001];
int sze[200001];
void calc (int pos, int par) {
	for (auto j : adj[pos]) {
		if (j == par) continue;
		calc(j, pos);
		sze[pos] += sze[j];
	}
	sze[pos]++;
}
int dfs (int pos, int par, int cnt = 0) {
	int sum = (sze[pos] - 1) * cnt;
	int sum2 = sze[pos] - 1;
	for (auto j : adj[pos]) {
		if (j == par) continue;
		sum += dfs(j, pos, cnt + sze[pos] - sze[j]);
		sum2 -= sze[j];
		sum += sze[j] * (sum2);
	}
	return sum;
}
signed main () {
    cin >> n;
    for (int i = 1; i < n; i++) {
	    int a, b;
	    cin >> a >> b;
	    adj[a].push_back(b);
	    adj[b].push_back(a);
    }
    calc(1, -1);
    cout << dfs(1, -1) << '\n';
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 6496 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 6496 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1109 ms 899212 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 732 ms 1048576 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Runtime error 863 ms 1048576 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Runtime error 643 ms 1048576 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 52 ms 11312 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 6496 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 6496 KB Output isn't correct
2 Halted 0 ms 0 KB -