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Submission #349637

# Submission time Handle Problem Language Result Execution time Memory
349637 2021-01-18T05:09:17 Z my99n Star triangles (IZhO11_triangle) C++17
100 / 100
 401 ms 13292 KB 
#include<bits/stdc++.h>
using namespace std;

int x[300100], y[300100];
map<int,long long> mx, my;
int main(){
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int n; cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> x[i] >> y[i];
    mx[x[i]]++; my[y[i]]++;
  }
  long long ans=0;
  for (int i = 0; i < n; i++) ans+=(mx[x[i]]-1)*(my[y[i]]-1);
  cout << ans;
  return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 0 ms 364 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 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 492 KB Output is correct
12 Correct 7 ms 1260 KB Output is correct
13 Correct 7 ms 1260 KB Output is correct
14 Correct 11 ms 1772 KB Output is correct
15 Correct 132 ms 7148 KB Output is correct
16 Correct 135 ms 7656 KB Output is correct
17 Correct 125 ms 7148 KB Output is correct
18 Correct 124 ms 7148 KB Output is correct
19 Correct 351 ms 12652 KB Output is correct
20 Correct 254 ms 10348 KB Output is correct
21 Correct 394 ms 13292 KB Output is correct
22 Correct 401 ms 13292 KB Output is correct