oj.uz

Submission #609286

# Submission time Handle Problem Language Result Execution time Memory
609286 2022-07-27T13:21:14 Z mannshah1211 Star triangles (IZhO11_triangle) C++14
100 / 100
 388 ms 14164 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

int main(){
  ll n;
  cin >> n;
  
  ll x[n];
  ll y[n];
  for(ll i = 0; i < n; i++){
      cin >> x[i] >> y[i];
  }
  
  unordered_map <ll, ll> freqX;
  unordered_map <ll, ll> freqY;
  
  ll ans = 0;
  
  for(ll i : x){
    freqX[i] = 0;
  }
  
  for(ll i : y){
    freqY[i] = 0;
  }
  
  for(ll i : x){
    freqX[i]++;
  }
  
  for(ll i : y){
    freqY[i]++;
  }
  
  for(ll i = 0; i < n; i++){
      ans += (freqX[x[i]] - 1)*(freqY[y[i]] - 1);
  }
  
  cout << ans;
  return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 296 KB Output is correct
3 Correct 0 ms 300 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 292 KB Output is correct
6 Correct 1 ms 212 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 304 KB Output is correct
11 Correct 1 ms 316 KB Output is correct
12 Correct 10 ms 952 KB Output is correct
13 Correct 10 ms 956 KB Output is correct
14 Correct 12 ms 1304 KB Output is correct
15 Correct 102 ms 6588 KB Output is correct
16 Correct 114 ms 6924 KB Output is correct
17 Correct 100 ms 6536 KB Output is correct
18 Correct 125 ms 6580 KB Output is correct
19 Correct 274 ms 13328 KB Output is correct
20 Correct 226 ms 10396 KB Output is correct
21 Correct 352 ms 14164 KB Output is correct
22 Correct 388 ms 14156 KB Output is correct