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Submission #532293

# Submission time Handle Problem Language Result Execution time Memory
532293 2022-03-02T16:53:45 Z christinelynn Star triangles (IZhO11_triangle) C++17
100 / 100
 540 ms 11372 KB 
#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
const ll MOD=1e9+7;
using namespace std;
ll N;
pair <ll,ll> pr[300005];
map <ll,ll> x;
map <ll,ll> y;
int main(){
  cin>>N;
  for(int i=1;i<=N;i++){
    cin>>pr[i].fi>>pr[i].se;
    x[pr[i].fi]++;
    y[pr[i].se]++;
  }
  ll ans=0;
  for(int i=1;i<=N;i++){
    ans+=(x[pr[i].fi]-1)*(y[pr[i].se]-1);
  }
  cout<<ans<<endl;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 300 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 300 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 300 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 304 KB Output is correct
11 Correct 1 ms 308 KB Output is correct
12 Correct 12 ms 1212 KB Output is correct
13 Correct 13 ms 1212 KB Output is correct
14 Correct 17 ms 1620 KB Output is correct
15 Correct 161 ms 7876 KB Output is correct
16 Correct 172 ms 8148 KB Output is correct
17 Correct 171 ms 7936 KB Output is correct
18 Correct 198 ms 7876 KB Output is correct
19 Correct 454 ms 10976 KB Output is correct
20 Correct 399 ms 9816 KB Output is correct
21 Correct 532 ms 11300 KB Output is correct
22 Correct 540 ms 11372 KB Output is correct