oj.uz

Submission #523165

# Submission time Handle Problem Language Result Execution time Memory
523165 2022-02-07T07:03:44 Z redstonegamer22 Star triangles (IZhO11_triangle) C++17
100 / 100
 295 ms 5348 KB 
#include <bits/stdc++.h>

using namespace std;

int main() {
    unordered_map<int, int64_t> xs;
    unordered_map<int, int64_t> ys;

    int n; cin >> n;
    vector<pair<int, int>> v(n);
    for(auto &e : v) cin >> e.first >> e.second;
    for(auto e : v) {xs[e.first] += 1; ys[e.second] += 1;}

    int64_t ans = 0;
    for(auto e : v) {
        ans = (1LL * ans + (xs[e.first] - 1) * (ys[e.second] - 1));
    }

    cout << ans << endl;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 2 ms 332 KB Output is correct
12 Correct 8 ms 716 KB Output is correct
13 Correct 10 ms 748 KB Output is correct
14 Correct 11 ms 1008 KB Output is correct
15 Correct 95 ms 3680 KB Output is correct
16 Correct 104 ms 3756 KB Output is correct
17 Correct 99 ms 3692 KB Output is correct
18 Correct 97 ms 3684 KB Output is correct
19 Correct 295 ms 5084 KB Output is correct
20 Correct 188 ms 4480 KB Output is correct
21 Correct 284 ms 5244 KB Output is correct
22 Correct 273 ms 5348 KB Output is correct