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Submission #976878

# Submission time Handle Problem Language Result Execution time Memory
976878 2024-05-07T08:20:20 Z vjudge1 Star triangles (IZhO11_triangle) C++17
100 / 100
 406 ms 15464 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long

signed main(){
    int n;
    cin >> n;

    map<int, int> cx, cy;
    int x[n+1], y[n+1];
    for(int i = 0; i < n; i++){
        cin >> x[i] >> y[i];

        cx[x[i]]++;
        cy[y[i]]++;
    }

    int ans = 0;
    for(int i = 0; i < n; i++){
        ans += (cx[x[i]] - 1) * (cy[y[i]] - 1);
    }

    cout << ans << endl;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 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 1 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 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 10 ms 1132 KB Output is correct
13 Correct 9 ms 1372 KB Output is correct
14 Correct 13 ms 1884 KB Output is correct
15 Correct 158 ms 7816 KB Output is correct
16 Correct 162 ms 8320 KB Output is correct
17 Correct 125 ms 7928 KB Output is correct
18 Correct 131 ms 8020 KB Output is correct
19 Correct 406 ms 15168 KB Output is correct
20 Correct 251 ms 11856 KB Output is correct
21 Correct 385 ms 15464 KB Output is correct
22 Correct 374 ms 15444 KB Output is correct