oj.uz

Submission #702108

# Submission time Handle Problem Language Result Execution time Memory
702108 2023-02-22T23:46:38 Z Darren0724 Star triangles (IZhO11_triangle) C++17
100 / 100
 300 ms 15572 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define all(x) x.begin(),x.end()

signed main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int n;cin>>n;
    map<int,int> x,y;
    vector<int> a(n),b(n);
    for(int i=0;i<n;i++){
        cin>>a[i]>>b[i];
        x[a[i]]++;
        y[b[i]]++;
    }
    int ans=0;
    for(int i=0;i<n;i++){
        ans+=(x[a[i]]-1)*(y[b[i]]-1);
    }
    cout<<ans<<endl;


	return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 0 ms 324 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 7 ms 1132 KB Output is correct
13 Correct 5 ms 1236 KB Output is correct
14 Correct 9 ms 1768 KB Output is correct
15 Correct 99 ms 7884 KB Output is correct
16 Correct 112 ms 8292 KB Output is correct
17 Correct 107 ms 7876 KB Output is correct
18 Correct 99 ms 7856 KB Output is correct
19 Correct 265 ms 14752 KB Output is correct
20 Correct 200 ms 11764 KB Output is correct
21 Correct 300 ms 15560 KB Output is correct
22 Correct 288 ms 15572 KB Output is correct