oj.uz

Submission #759250

# Submission time Handle Problem Language Result Execution time Memory
759250 2023-06-16T00:09:38 Z Trunkty Star triangles (IZhO11_triangle) C++14
100 / 100
 351 ms 30804 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define int ll

int n,ans;
vector<vector<int>> v;
map<int,int> row,col;

signed main(){
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n;
    for(int i=1;i<=n;i++){
        int a,b;
        cin >> a >> b;
        v.push_back({a,b});
        row[a]++;
        col[b]++;
    }
    for(vector<int> i:v){
        ans += (row[i[0]]-1LL)*(col[i[1]]-1LL);
    }
    cout << ans << "\n";
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 316 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 6 ms 1608 KB Output is correct
13 Correct 6 ms 1680 KB Output is correct
14 Correct 9 ms 2056 KB Output is correct
15 Correct 113 ms 11856 KB Output is correct
16 Correct 103 ms 12564 KB Output is correct
17 Correct 93 ms 11764 KB Output is correct
18 Correct 100 ms 11792 KB Output is correct
19 Correct 271 ms 30796 KB Output is correct
20 Correct 225 ms 19656 KB Output is correct
21 Correct 293 ms 30804 KB Output is correct
22 Correct 351 ms 30804 KB Output is correct