oj.uz

Submission #899186

# Submission time Handle Problem Language Result Execution time Memory
899186 2024-01-05T15:04:04 Z joccccca Star triangles (IZhO11_triangle) C++14
100 / 100
 360 ms 12296 KB 
#include <bits/stdc++.h>
#define  f first
#define  s second

using namespace std;



int main()
{
  int n;
  cin>>n;
  vector<pair<int, int>> tacke(n);
  int t,m;
  for(int i=0; i < n; i++){
    cin>>t;
    cin>>m;
    tacke[i] = make_pair(t,m);
  }
  map<int, int> x;
  map<int, int> y;
  for(int i=0; i < n; i++)x[tacke[i].f]++;
  for(int i=0; i < n; i++)y[tacke[i].s]++;
  long long rez=0;


  for(int i=0; i < n; i++){
    rez+=(x[tacke[i].f]-1)*(y[tacke[i].s]-1);
  }
  cout<<rez;

}

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 0 ms 440 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 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 348 KB Output is correct
12 Correct 8 ms 960 KB Output is correct
13 Correct 9 ms 976 KB Output is correct
14 Correct 11 ms 1372 KB Output is correct
15 Correct 125 ms 6456 KB Output is correct
16 Correct 129 ms 6480 KB Output is correct
17 Correct 121 ms 6288 KB Output is correct
18 Correct 117 ms 6048 KB Output is correct
19 Correct 356 ms 11624 KB Output is correct
20 Correct 235 ms 9348 KB Output is correct
21 Correct 360 ms 12296 KB Output is correct
22 Correct 344 ms 12108 KB Output is correct