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Submission #1100556

# Submission time Handle Problem Language Result Execution time Memory
1100556 2024-10-14T08:58:16 Z vjudge1 Star triangles (IZhO11_triangle) C++17
100 / 100
 206 ms 5376 KB 
#include <bits/stdc++.h>
#define ll long long
using namespace std;
int main() {
    int n;
    cin>>n;
    unordered_map<int, int> cntx, cnty;
    pair<int, int> stars[n];
    for (int i = 0; i < n; i++) {
        int x, y;
        cin>>x>>y;
        stars[i] = {x, y};
        cntx[x]++;
        cnty[y]++;
    }
    ll total = 0;
    for (int i = 0; i < n; i++) {
        int x = stars[i].first;
        int y = stars[i].second;
        total += (cntx[x]-1) * (cnty[y]-1);
}
    cout<<total<<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 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 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 336 KB Output is correct
12 Correct 6 ms 848 KB Output is correct
13 Correct 8 ms 848 KB Output is correct
14 Correct 8 ms 1160 KB Output is correct
15 Correct 87 ms 3588 KB Output is correct
16 Correct 70 ms 3764 KB Output is correct
17 Correct 64 ms 3584 KB Output is correct
18 Correct 66 ms 3584 KB Output is correct
19 Correct 173 ms 5176 KB Output is correct
20 Correct 139 ms 4672 KB Output is correct
21 Correct 206 ms 5376 KB Output is correct
22 Correct 190 ms 5376 KB Output is correct