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Submission #972844

# Submission time Handle Problem Language Result Execution time Memory
972844 2024-05-01T09:02:57 Z vjudge1 Star triangles (IZhO11_triangle) C++17
100 / 100
 393 ms 13820 KB 
#include <bits/stdc++.h>
 
using namespace std;
using ll = long long;
 
int main(){
    int N; cin >> N;
    vector<pair<int, int>>v(N);
    map<int, ll>cntX, cntY;
 
    for(auto &[x, y]: v){
        cin >> x >> y;
        cntX[x]++;
        cntY[y]++;
    }
 
    ll ans = 0;
 
    for(auto &[x, y]: v){
        ans += max(0LL, (cntX[x] - 1)*(cntY[y] - 1));
    }
 
    cout << ans << endl;
 
    return 0;
}

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 436 KB Output is correct
3 Correct 0 ms 600 KB Output is correct
4 Correct 0 ms 436 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 492 KB Output is correct
12 Correct 9 ms 1116 KB Output is correct
13 Correct 9 ms 1240 KB Output is correct
14 Correct 13 ms 1628 KB Output is correct
15 Correct 128 ms 7248 KB Output is correct
16 Correct 142 ms 7504 KB Output is correct
17 Correct 156 ms 7428 KB Output is correct
18 Correct 152 ms 7252 KB Output is correct
19 Correct 355 ms 12680 KB Output is correct
20 Correct 247 ms 10180 KB Output is correct
21 Correct 384 ms 13272 KB Output is correct
22 Correct 393 ms 13820 KB Output is correct