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Submission #968570

# Submission time Handle Problem Language Result Execution time Memory
968570 2024-04-23T15:56:31 Z vjudge1 Star triangles (IZhO11_triangle) C++17
100 / 100
 242 ms 12112 KB 
#include<bits/stdc++.h>
using namespace std;

const int MAXN = 3e5;

int N;
int X[MAXN + 5], Y[MAXN + 5];
map<int, int> cntX, cntY;

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    cin >> N;
    for (int i = 0; i < N; i++) {
        cin >> X[i] >> Y[i];
        cntX[X[i]]++;
        cntY[Y[i]]++;
    }
    long long ans = 0;
    for (int i = 0; i < N; i++) {
        ans += 1ll * (cntX[X[i]] - 1) * (cntY[Y[i]] - 1);
    }
    cout << ans << endl;
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2424 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2468 KB Output is correct
10 Correct 1 ms 2520 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 5 ms 3164 KB Output is correct
13 Correct 5 ms 3164 KB Output is correct
14 Correct 9 ms 3416 KB Output is correct
15 Correct 80 ms 7508 KB Output is correct
16 Correct 95 ms 7892 KB Output is correct
17 Correct 83 ms 7504 KB Output is correct
18 Correct 85 ms 7508 KB Output is correct
19 Correct 230 ms 11504 KB Output is correct
20 Correct 169 ms 10036 KB Output is correct
21 Correct 239 ms 12068 KB Output is correct
22 Correct 242 ms 12112 KB Output is correct