oj.uz

Submission #1086297

# Submission time Handle Problem Language Result Execution time Memory
1086297 2024-09-10T05:38:48 Z toast12 Star triangles (IZhO11_triangle) C++14
100 / 100
 384 ms 12268 KB 
#include <bits/stdc++.h>
using namespace std;

using ll = long long;

int main() {
    int n;
    cin >> n;
    map<int, int> x, y;
    vector<pair<int, int>> points(n);
    for (int i = 0; i < n; i++) {
        int a, b;
        cin >> a >> b;
        x[a]++, y[b]++;
        points[i].first = a, points[i].second = b;
    }
    ll ans = 0;
    for (int i = 0; i < n; i++) {
        ans += 1ll*(x[points[i].first]-1)*(y[points[i].second]-1);
    }
    cout << ans << '\n';
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 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 1 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 444 KB Output is correct
12 Correct 7 ms 1116 KB Output is correct
13 Correct 9 ms 1176 KB Output is correct
14 Correct 12 ms 1372 KB Output is correct
15 Correct 142 ms 6156 KB Output is correct
16 Correct 142 ms 6480 KB Output is correct
17 Correct 128 ms 6228 KB Output is correct
18 Correct 127 ms 6172 KB Output is correct
19 Correct 345 ms 11404 KB Output is correct
20 Correct 254 ms 9296 KB Output is correct
21 Correct 384 ms 12104 KB Output is correct
22 Correct 376 ms 12268 KB Output is correct