oj.uz

Submission #888261

# Submission time Handle Problem Language Result Execution time Memory
888261 2023-12-16T17:39:54 Z presko Star triangles (IZhO11_triangle) C++14
100 / 100
 248 ms 6108 KB 
#include<iostream>
#include<bits/stdc++.h>
#define MAXN 300010
using namespace std;
map<int,int> row,col;
pair<int,int> p[MAXN];
int main()
{
    int n;
    long long ans=0;
    ios_base::sync_with_stdio(false);
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>p[i].first>>p[i].second;
        row[p[i].first]++;
        col[p[i].second]++;
    }
    for(int i=1;i<=n;i++)
    {
        long long l=row[p[i].first]-1;
        long long r=col[p[i].second]-1;
        l=l*r;
        ans+=l;
    }
    cout<<ans<<"\n";
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 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 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 7 ms 860 KB Output is correct
13 Correct 4 ms 856 KB Output is correct
14 Correct 7 ms 1116 KB Output is correct
15 Correct 79 ms 5592 KB Output is correct
16 Correct 103 ms 5680 KB Output is correct
17 Correct 81 ms 5592 KB Output is correct
18 Correct 84 ms 5588 KB Output is correct
19 Correct 216 ms 5748 KB Output is correct
20 Correct 169 ms 5732 KB Output is correct
21 Correct 235 ms 6108 KB Output is correct
22 Correct 248 ms 5860 KB Output is correct