oj.uz

Submission #436027

# Submission time Handle Problem Language Result Execution time Memory
436027 2021-06-24T06:06:38 Z ak2006 Star triangles (IZhO11_triangle) C++14
100 / 100
 517 ms 26208 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vb = vector<bool>;
using vvb = vector<vb>;
using vi = vector<int>;
using vvi = vector<vi>;
using vl = vector<ll>;
using vvl = vector<vl>;
using vc = vector<char>;
using vvc = vector<vc>;
using vs = vector<string>;
const ll mod = 1e9 + 7,inf = 1e18;
#define pb push_back
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
void setIO()
{
    fast;
}
int main()
{
    setIO();
    int n;
    cin>>n;
    vvi p(n,vi(2));
    map<int,int>x,y;
    for (int i = 0;i<n;i++)cin>>p[i][0]>>p[i][1],x[p[i][0]]++,y[p[i][1]]++;
    ll ans = 0;
    for (int i = 0;i<n;i++)
        ans += 1ll * (x[p[i][0]] - 1) * 1ll * (y[p[i][1]] - 1);
    cout<<ans;
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 1 ms 316 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 2 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 8 ms 1472 KB Output is correct
13 Correct 8 ms 1476 KB Output is correct
14 Correct 12 ms 1768 KB Output is correct
15 Correct 170 ms 10808 KB Output is correct
16 Correct 199 ms 11592 KB Output is correct
17 Correct 151 ms 10800 KB Output is correct
18 Correct 134 ms 10820 KB Output is correct
19 Correct 458 ms 24484 KB Output is correct
20 Correct 311 ms 18580 KB Output is correct
21 Correct 517 ms 26208 KB Output is correct
22 Correct 415 ms 26208 KB Output is correct