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Submission #1112593

# Submission time Handle Problem Language Result Execution time Memory
1112593 2024-11-14T11:17:52 Z Chinguun Star triangles (IZhO11_triangle) C++14
100 / 100
 290 ms 9244 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long

const int N = 3e5 + 7;
int n, a[N], b[N], ans;
map <int, int> x, y;

signed main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);

	cin >> n;
	for (int i = 1; i <= n; i++) {
		cin >> a[i] >> b[i];
		x[a[i]]++; y[b[i]]++;
	}
	for (int i = 1; i <= n; i++) {
		ans += (x[a[i]] - 1) * (y[b[i]] - 1);
	}
	cout << ans;
	return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2384 KB Output is correct
2 Correct 1 ms 2384 KB Output is correct
3 Correct 1 ms 2384 KB Output is correct
4 Correct 1 ms 2384 KB Output is correct
5 Correct 1 ms 2552 KB Output is correct
6 Correct 1 ms 2384 KB Output is correct
7 Correct 1 ms 2384 KB Output is correct
8 Correct 1 ms 2552 KB Output is correct
9 Correct 1 ms 2384 KB Output is correct
10 Correct 1 ms 2384 KB Output is correct
11 Correct 2 ms 2384 KB Output is correct
12 Correct 6 ms 3152 KB Output is correct
13 Correct 5 ms 3168 KB Output is correct
14 Correct 9 ms 3664 KB Output is correct
15 Correct 98 ms 8520 KB Output is correct
16 Correct 106 ms 8520 KB Output is correct
17 Correct 93 ms 8616 KB Output is correct
18 Correct 97 ms 8520 KB Output is correct
19 Correct 263 ms 9012 KB Output is correct
20 Correct 194 ms 8780 KB Output is correct
21 Correct 290 ms 9244 KB Output is correct
22 Correct 289 ms 9032 KB Output is correct