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Submission #405479

# Submission time Handle Problem Language Result Execution time Memory
405479 2021-05-16T12:49:24 Z saleh Duathlon (APIO18_duathlon) C++17
0 / 100
 1000 ms 1048580 KB 
#include <bits/stdc++.h>

#define int long long

using namespace std;


const int MAXN = 100 * 1000 + 23;















int n, m, ans;
vector<int> g[MAXN];
bitset<MAXN> mark;

//int ent(int x) { return x * (x - 1); }
int gs(int v, int p) {
	int res = 1;
	mark[v] = true;
	for (auto i : g[v]) if (i != p) res += gs(i, v);
	return res;
}
int ds(int v, int p) {
	int res = g[v].size();
	for (auto i : g[v]) if (i != p) res += ds(i, v);
	return res;
}


int32_t main() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr), cout.tie(nullptr);
	cin >> n >> m;
	for (int i = 0; i < m; i++) {
		int u, v;
		cin >> u >> v;
		g[--u].push_back(--v), g[v].push_back(u);
	}
	for (int i = 0; i < n; i++) if (!mark[i]) {
		int x = gs(i, -1);
		int y = ds(i, -1);
		if (x * 2 == y) ans += x * (x - 1) * (x - 2);
		else for (int i = 0; i < x; i++) ans += i * (x - i - 1) * 2;
	}
	cout << ans;
	return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 638 ms 1048580 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 638 ms 1048580 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 1106 ms 479536 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 2676 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 56 ms 7008 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 2636 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 55 ms 6772 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Runtime error 638 ms 1048580 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 638 ms 1048580 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -