oj.uz

Submission #1112855

# Submission time Handle Problem Language Result Execution time Memory
1112855 2024-11-15T03:52:52 Z Pishka12 Star triangles (IZhO11_triangle) C++14
100 / 100
 304 ms 15828 KB 
#include <bits/stdc++.h>
#define ll long long
#define f first
#define s second
using namespace std;
 
int main() 
{
    ios_base::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    ll n;
    cin>>n;
    map<ll,ll> ax;
    map<ll,ll> ay;
    vector<pair<ll,ll>> le(n+1);
    for(int i = 1;i<=n;i++) {
      ll x,y;
      cin>>x>>y;
      le[i] = {x,y};
      ax[x]++;
      ay[y]++;
    }
    ll ans = 0;
    for (int i=1;i<=n;i++) {
      ans += (ax[le[i].f]-1)*(ay[le[i].s]-1);
    }
    cout<<ans<<endl;
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 336 KB Output is correct
6 Correct 2 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 528 KB Output is correct
12 Correct 6 ms 1360 KB Output is correct
13 Correct 6 ms 1316 KB Output is correct
14 Correct 10 ms 1884 KB Output is correct
15 Correct 96 ms 7976 KB Output is correct
16 Correct 107 ms 8424 KB Output is correct
17 Correct 98 ms 7880 KB Output is correct
18 Correct 104 ms 8020 KB Output is correct
19 Correct 281 ms 14664 KB Output is correct
20 Correct 197 ms 11968 KB Output is correct
21 Correct 304 ms 15660 KB Output is correct
22 Correct 299 ms 15828 KB Output is correct