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Submission #597490

# Submission time Handle Problem Language Result Execution time Memory
597490 2022-07-16T07:04:20 Z hail Star triangles (IZhO11_triangle) C++17
100 / 100
 267 ms 16156 KB 
#include <bits/stdc++.h>

using namespace std;

using ll=long long;

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);

    int n;
    cin>>n;

    vector<ll> x_coor(n);
    vector<ll> y_coor(n);

    vector<pair<ll, ll>> coor(n);

    ll x;
    ll y;

    for(int i=0; i<n; i++)
    {
        cin>>x>>y;
        x_coor[i]=x;
        y_coor[i]=y;
        coor[i]=make_pair(x, y);
    }

    sort(x_coor.begin(), x_coor.end());
    sort(y_coor.begin(), y_coor.end());

    ll ans{};

    ll t_x;
    ll t_y;

    for(auto i: coor)
    {
        t_x=upper_bound(x_coor.begin(), x_coor.end(), i.first)-lower_bound(x_coor.begin(), x_coor.end(), i.first);
        t_y=upper_bound(y_coor.begin(), y_coor.end(), i.second)-lower_bound(y_coor.begin(), y_coor.end(), i.second);
        ans+=(t_x-1)*(t_y-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 1 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 1 ms 212 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 372 KB Output is correct
12 Correct 5 ms 724 KB Output is correct
13 Correct 6 ms 844 KB Output is correct
14 Correct 7 ms 760 KB Output is correct
15 Correct 91 ms 5488 KB Output is correct
16 Correct 90 ms 6068 KB Output is correct
17 Correct 81 ms 5492 KB Output is correct
18 Correct 80 ms 5604 KB Output is correct
19 Correct 260 ms 14984 KB Output is correct
20 Correct 170 ms 10828 KB Output is correct
21 Correct 267 ms 16156 KB Output is correct
22 Correct 265 ms 16152 KB Output is correct