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Submission #976427

# Submission time Handle Problem Language Result Execution time Memory
976427 2024-05-06T14:50:22 Z vjudge1 Star triangles (IZhO11_triangle) C++17
100 / 100
 285 ms 15448 KB 
#include <iostream>
#include <map>
#include <vector>
using namespace std;

int main() {
    cin.tie(0); ios::sync_with_stdio(false);
    int n;
    long long ans = 0;
    cin >> n;
    map<int, vector<int>> adjX;
    map<int, vector<int>> adjY;

    for (int i = 0, xi, yi; i < n; i++) {
        cin >> xi >> yi;
        adjX[xi].push_back(yi);
        adjY[yi].push_back(xi);
    }

    int numX;
    for (auto &[xi, adj] : adjX) {
        numX = adj.size() - 1;
        for (auto &yi : adj) {
            if (!adjY.count(yi)) continue;
            ans += numX * (adjY[yi].size() - 1);
        }
    }
    cout << ans;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 460 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 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 6 ms 1616 KB Output is correct
13 Correct 5 ms 1628 KB Output is correct
14 Correct 9 ms 2396 KB Output is correct
15 Correct 90 ms 9196 KB Output is correct
16 Correct 107 ms 9576 KB Output is correct
17 Correct 95 ms 9236 KB Output is correct
18 Correct 97 ms 9044 KB Output is correct
19 Correct 258 ms 14636 KB Output is correct
20 Correct 178 ms 12368 KB Output is correct
21 Correct 258 ms 15444 KB Output is correct
22 Correct 285 ms 15448 KB Output is correct