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Submission #879491

# Submission time Handle Problem Language Result Execution time Memory
879491 2023-11-27T14:36:24 Z alexdd Star triangles (IZhO11_triangle) C++17
100 / 100
 239 ms 12300 KB 
#include<bits/stdc++.h>
using namespace std;
int n;
pair<int,int> v[300005];
map<int,int> frx;
map<int,int> fry;
signed main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>v[i].first>>v[i].second;
        frx[v[i].first]++;
        fry[v[i].second]++;
    }
    long long cnt=0;
    for(int i=1;i<=n;i++)
    {
        cnt += 1LL*(frx[v[i].first]-1)*(fry[v[i].second]-1);
    }
    cout<<cnt;
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 364 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 5 ms 1116 KB Output is correct
13 Correct 5 ms 1116 KB Output is correct
14 Correct 8 ms 1484 KB Output is correct
15 Correct 85 ms 7764 KB Output is correct
16 Correct 88 ms 7976 KB Output is correct
17 Correct 79 ms 7580 KB Output is correct
18 Correct 80 ms 7504 KB Output is correct
19 Correct 230 ms 11860 KB Output is correct
20 Correct 156 ms 10044 KB Output is correct
21 Correct 232 ms 12136 KB Output is correct
22 Correct 239 ms 12300 KB Output is correct