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Submission #532100

# Submission time Handle Problem Language Result Execution time Memory
532100 2022-03-02T05:50:50 Z kebine Star triangles (IZhO11_triangle) C++17
0 / 100
 1 ms 296 KB 
#include <bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
typedef long long ll;
using namespace std;

ll n, ans;
pair<ll,ll>arr[300005];
ll total[300005];

int main(){
  cin >> n;
  for(int i = 0; i < n; i++){
    cin >> arr[i].fi >> arr[i].se;
    total[arr[i].se]++;
  }
  for(int i = 0; i < n; i++){
    for(int j = 0; j < n; j++){
      if(i==j || arr[i].fi != arr[j].fi)continue;
      ans += total[arr[j].se]-1;
//      cout << total[arr[j].se] << endl;
//      cout << arr[i].fi << " " << arr[i].se << " : " << arr[j].fi << " " << arr[j].se << " : " << ans << endl;
    }
  }
  cout << ans << endl;
}

//tle lmao

Subtask #1
0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 296 KB Output is correct
5 Incorrect 1 ms 204 KB Output isn't correct
6 Halted 0 ms 0 KB -