oj.uz

Submission #977008

# Submission time Handle Problem Language Result Execution time Memory
977008 2024-05-07T10:18:44 Z vjudge1 Star triangles (IZhO11_triangle) C++17
100 / 100
 1270 ms 48464 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define fs first
#define sc second

int main(){
    int n;
    cin>>n;
    multiset<pair<int,int>> p;
    multiset<int> mx,my;
    while (n--) {
        int x,y;
        cin>>x>>y;
        p.insert({x,y});
        mx.insert(x);my.insert(y);
    }
    ll cnt=0;
    for (auto [x,y]:p){
        ll a=mx.count(x)-p.count({x,y}),b=my.count(y)-p.count({x,y});
        cnt+=a*b;
    }
    cout<<cnt;
}

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 344 KB Output is correct
4 Correct 1 ms 344 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 344 KB Output is correct
10 Correct 2 ms 600 KB Output is correct
11 Correct 3 ms 408 KB Output is correct
12 Correct 64 ms 1968 KB Output is correct
13 Correct 246 ms 2032 KB Output is correct
14 Correct 14 ms 1884 KB Output is correct
15 Correct 220 ms 16584 KB Output is correct
16 Correct 240 ms 17880 KB Output is correct
17 Correct 198 ms 16468 KB Output is correct
18 Correct 212 ms 16476 KB Output is correct
19 Correct 1080 ms 44884 KB Output is correct
20 Correct 630 ms 32300 KB Output is correct
21 Correct 1270 ms 48464 KB Output is correct
22 Correct 1211 ms 48316 KB Output is correct