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Submission #976061

# Submission time Handle Problem Language Result Execution time Memory
976061 2024-05-06T06:54:54 Z vjudge1 Star triangles (IZhO11_triangle) C++11
100 / 100
 421 ms 15444 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define vi vector<int>
#define pb push_back
int main()
{
    ll n;
    cin >> n;
    map<ll, vector<ll>> x;
    map<ll, vector<ll>> y;
    map<ll, ll> counts;
    ll ans = 0;
    for (int i = 0; i < n; i++)
    {
        ll a, b;
        cin >> a >> b;
        x[a].pb(b);

        y[b].pb(a);
    }
    for (auto i : x)
    {
        ll elementsss = 0;
        ll currsum = 0;

        for (auto j : i.second)
        {
            int sz = y[j].size();
            sz--;
            currsum += sz;
            elementsss++;
        }
        ans += currsum * (elementsss - 1);
    }
    cout << ans;
    // x: 0 = 0, 1; 1 = 0  y: 0 = 0,1 1 = 0
    // x: 0 = 2; 1 = 2;
    // y: 0 = 2;  1 = 2;

    // if found a coordinate sharing x/y find a coordinate in which it either shares y/x
    // example: 0 1 ,0 2
    /*
    x..
    ...
    x.x
    */

    //
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 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 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 9 ms 1416 KB Output is correct
13 Correct 9 ms 1628 KB Output is correct
14 Correct 13 ms 2140 KB Output is correct
15 Correct 136 ms 8532 KB Output is correct
16 Correct 142 ms 8864 KB Output is correct
17 Correct 142 ms 8536 KB Output is correct
18 Correct 172 ms 8620 KB Output is correct
19 Correct 386 ms 14676 KB Output is correct
20 Correct 269 ms 12116 KB Output is correct
21 Correct 397 ms 15184 KB Output is correct
22 Correct 421 ms 15444 KB Output is correct