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Submission #975621

# Submission time Handle Problem Language Result Execution time Memory
975621 2024-05-05T15:00:29 Z vjudge1 Star triangles (IZhO11_triangle) C++17
100 / 100
 426 ms 8088 KB 
#include<bits/stdc++.h>
using namespace std;

using ll = long long;

signed main() {
	int n;
	cin >> n;

	map<int, vector<int>> xx;
	map<int, ll> yy;

	for (int i = 0; i< n; i++) {
		int x, y;
		cin >> x >> y;
		xx[x].push_back(y);
		yy[y]++;
	}

	ll ans = 0;

	for (auto [x, v] : xx) {
		for (int y : v) {
			ans += (yy[y] - 1LL) * (ll) (v.size() - 1LL);		
		}
	}

	cout << ans << '\n';
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 8 ms 1116 KB Output is correct
13 Correct 9 ms 1336 KB Output is correct
14 Correct 12 ms 1828 KB Output is correct
15 Correct 127 ms 5716 KB Output is correct
16 Correct 139 ms 5972 KB Output is correct
17 Correct 125 ms 5716 KB Output is correct
18 Correct 156 ms 5952 KB Output is correct
19 Correct 396 ms 7856 KB Output is correct
20 Correct 272 ms 7092 KB Output is correct
21 Correct 409 ms 8088 KB Output is correct
22 Correct 426 ms 8024 KB Output is correct