oj.uz

Submission #674047

# Submission time Handle Problem Language Result Execution time Memory
674047 2022-12-22T17:40:24 Z tato Star triangles (IZhO11_triangle) C++14
100 / 100
 458 ms 13360 KB 
#include <bits/stdc++.h>
#define ll long long
using namespace std;


void answer() {
  int n;
  cin >> n;
  vector<pair<int, int>> v;

  map<int, int> mpx, mpy;
  int x, y;
  for(int i=1; i<=n;i++){
    cin >> x>> y;
    v.push_back({x, y});
    mpx[x]++;
    mpy[y]++;
  }
  ll ans=0;

  for(int i=0; i<n; i++){
//    cout << mpx[v[i].first] << ' ' << mpy[v[i].second] << ' ';
    ans += (mpx[v[i].first] - 1) * (mpy[v[i].second]-1);
  }

  cout << ans;

}

int main() {
  int t=1;
//  cin >> t;
  while(t--) {
    answer();
  }
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 296 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 0 ms 296 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 316 KB Output is correct
12 Correct 10 ms 952 KB Output is correct
13 Correct 11 ms 980 KB Output is correct
14 Correct 14 ms 1364 KB Output is correct
15 Correct 155 ms 6048 KB Output is correct
16 Correct 165 ms 6436 KB Output is correct
17 Correct 152 ms 6080 KB Output is correct
18 Correct 156 ms 6112 KB Output is correct
19 Correct 434 ms 13240 KB Output is correct
20 Correct 308 ms 9140 KB Output is correct
21 Correct 458 ms 13360 KB Output is correct
22 Correct 454 ms 13292 KB Output is correct