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답안 #532115

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
532115 2022-03-02T06:08:00 Z devariaota 별들과 삼각형 (IZhO11_triangle) C++17
0 / 100
 1 ms 332 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 x[300005], y[300005];

int main(){
  cin >> n;
  for(int i = 0; i < n; i++){
    cin >> arr[i].fi >> arr[i].se;
    x[arr[i].fi]++; y[arr[i].se]++;
  }
  for(int i = 0; i < n; i++){
    ans += (x[arr[i].fi]-1) * (y[arr[i].se]-1);
  }
  cout << ans << endl;
}

Subtask #1
0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Incorrect 1 ms 332 KB Output isn't correct
6 Halted 0 ms 0 KB -