oj.uz

Submission #531950

# Submission time Handle Problem Language Result Execution time Memory
531950 2022-03-02T01:22:44 Z christinelynn Star triangles (IZhO11_triangle) C++17
100 / 100
 312 ms 18500 KB 
#include <bits/stdc++.h>
#define REP(v, i, j) for (ll v = i; v < j; v++)
#define FORI(v) for (auto i : v)
#define FORJ(v) for (auto j : v)

#define OUT(v, a)     FORI(v)           cout << i << a;
#define OUTS(v, a, b)          cout << v.size() << a;     OUT(v, b)
#define in(a, n)     REP(i, 0, n)     cin >> a[i];

#define SORT(v) sort(begin(v), end(v))
#define REV(v) reverse(begin(v), end(v))

#define pb push_back
#define fi first
#define se second

#define detachIO                          ios_base::sync_with_stdio(false);     cin.tie(0);                           cout.tie(0);

using namespace std;

typedef long long ll;

typedef pair<ll, ll> pii;
typedef pair<pii, ll> piii;
typedef pair<pii, pii> piiii;

map<ll, ll> x, y;
vector<pii> v;

int main()
{
    detachIO;

    ll N;
    cin >> N;

    while (N--)
    {
        ll a, b;
        cin >> a >> b;
        x[a]++, y[b]++;
        v.pb({a, b});
    }

    ll ans = 0;

    FORI(v)
    {
        ans += (x[i.fi] - 1) * (y[i.se] - 1);
    }

    cout << ans << '\n';
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 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 332 KB Output is correct
8 Correct 1 ms 312 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 324 KB Output is correct
12 Correct 6 ms 1228 KB Output is correct
13 Correct 6 ms 1228 KB Output is correct
14 Correct 10 ms 1756 KB Output is correct
15 Correct 109 ms 7848 KB Output is correct
16 Correct 111 ms 8308 KB Output is correct
17 Correct 132 ms 7844 KB Output is correct
18 Correct 101 ms 7856 KB Output is correct
19 Correct 294 ms 18500 KB Output is correct
20 Correct 206 ms 11784 KB Output is correct
21 Correct 310 ms 18432 KB Output is correct
22 Correct 312 ms 18484 KB Output is correct