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Submission #839214

# Submission time Handle Problem Language Result Execution time Memory
839214 2023-08-29T06:02:20 Z Alfraganus Star triangles (IZhO11_triangle) C++17
100 / 100
 416 ms 15540 KB 
#include <bits/stdc++.h>
using namespace std;

#define fs first
#define ss second
#define ll long long

int main(){
    int n;
    cin >> n;
    map<ll, ll> X, Y;
    vector<pair<ll, ll>> a(n);
    for(int i = 0; i < n; i ++){
        cin >> a[i].fs >> a[i].ss;
        X[a[i].fs] ++;
        Y[a[i].ss] ++;
    }
    ll ans = 0;
    for(int i = 0; i < n; i ++)
        ans += 1ll * (X[a[i].fs] - 1) * (Y[a[i].ss] - 1);
    cout << ans;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 220 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 2 ms 300 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 8 ms 1216 KB Output is correct
13 Correct 9 ms 1236 KB Output is correct
14 Correct 12 ms 1748 KB Output is correct
15 Correct 135 ms 8040 KB Output is correct
16 Correct 136 ms 8260 KB Output is correct
17 Correct 131 ms 7824 KB Output is correct
18 Correct 124 ms 7836 KB Output is correct
19 Correct 350 ms 14852 KB Output is correct
20 Correct 246 ms 11768 KB Output is correct
21 Correct 386 ms 15540 KB Output is correct
22 Correct 416 ms 15532 KB Output is correct