oj.uz

Submission #739347

# Submission time Handle Problem Language Result Execution time Memory
739347 2023-05-10T10:47:36 Z Unforgettablepl Star triangles (IZhO11_triangle) C++17
100 / 100
 100 ms 14156 KB 
/*
ID: samikgo1
TASK:
LANG: C++
*/
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
#define all(x) x.begin(),x.end()
#define allr(x) x.rbegin(),x.rend()
#define f first
#define s second
//#define x first
//#define y second
const int INF = INT32_MAX;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
//    freopen("measurement.in","r",stdin);
//    freopen("measurement.out","w",stdout);
    ll n;
    cin >> n;
    vector<pll> points(n);
    for(pll&i:points)cin>>i.f>>i.s;
    unordered_map<ll,ll> x_axis;
    unordered_map<ll,ll> y_axis;
    ll ans = 0;
    for (pll &i: points) {
        x_axis[i.first]++;
        y_axis[i.second]++;
    }
    for (pll &i: points) {
        ans+=(x_axis[i.first]-1)*(y_axis[i.second]-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 316 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 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 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 320 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 5 ms 972 KB Output is correct
13 Correct 6 ms 980 KB Output is correct
14 Correct 5 ms 1364 KB Output is correct
15 Correct 39 ms 6656 KB Output is correct
16 Correct 49 ms 6928 KB Output is correct
17 Correct 36 ms 6536 KB Output is correct
18 Correct 36 ms 6540 KB Output is correct
19 Correct 91 ms 13288 KB Output is correct
20 Correct 71 ms 10408 KB Output is correct
21 Correct 97 ms 14084 KB Output is correct
22 Correct 100 ms 14156 KB Output is correct