oj.uz

Submission #333633

# Submission time Handle Problem Language Result Execution time Memory
333633 2020-12-07T09:40:52 Z apostoldaniel854 Star triangles (IZhO11_triangle) C++14
100 / 100
 422 ms 13404 KB 
#include <bits/stdc++.h>

using namespace std;

using ll = long long;
#define pb push_back
#define dbg(x) cerr << #x << " " << x << "\n"

int main () {
    ios::sync_with_stdio (false);
    cin.tie (0); cout.tie (0);
    int n;
    cin >> n;
    vector <pair <int, int>> points;
    map <int, int> onX, onY;
    for (int i = 1; i <= n; i++) {
        int x, y;
        cin >> x >> y;
        points.pb ({x, y});
        onX[x]++;
        onY[y]++;
    }
    ll ans = 0;
    for (pair <int, int> p : points)
        ans += 1ll * (onX[p.first] - 1) * (onY[p.second] - 1);
    cout << ans << "\n";
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 8 ms 1004 KB Output is correct
13 Correct 8 ms 1132 KB Output is correct
14 Correct 11 ms 1388 KB Output is correct
15 Correct 134 ms 6240 KB Output is correct
16 Correct 142 ms 6496 KB Output is correct
17 Correct 133 ms 6272 KB Output is correct
18 Correct 148 ms 6224 KB Output is correct
19 Correct 375 ms 13404 KB Output is correct
20 Correct 295 ms 9308 KB Output is correct
21 Correct 391 ms 13404 KB Output is correct
22 Correct 422 ms 13404 KB Output is correct