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Submission #212870

# Submission time Handle Problem Language Result Execution time Memory
212870 2020-03-24T12:23:11 Z islingr Star triangles (IZhO11_triangle) C++14
100 / 100
 360 ms 12456 KB 
#include <algorithm>
#include <iostream>
#include <vector>
#include <map>
using namespace std;

#define rep(i, a, b) for (auto i = (a); i < (b); ++i)
#define per(i, a, b) for (auto i = (b) - 1; i >= (a); --i)
#define trav(x, v) for (auto &x : v)
#define ff first
#define ss second

using ll = int64_t;

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	int n; cin >> n;
	vector<pair<int, int>> v(n);
	map<int, int> x, y;
	trav(p, v) {
		cin >> p.ff >> p.ss;
		++x[p.ff]; ++y[p.ss];
	}
	ll ans = 0;
	trav(p, v) ans += 1ll * (x[p.ff] - 1) * (y[p.ss] - 1);
	cout << ans;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 12 ms 1024 KB Output is correct
13 Correct 11 ms 1024 KB Output is correct
14 Correct 18 ms 1408 KB Output is correct
15 Correct 129 ms 6204 KB Output is correct
16 Correct 134 ms 6520 KB Output is correct
17 Correct 124 ms 6264 KB Output is correct
18 Correct 139 ms 6264 KB Output is correct
19 Correct 323 ms 11512 KB Output is correct
20 Correct 235 ms 9336 KB Output is correct
21 Correct 360 ms 12456 KB Output is correct
22 Correct 347 ms 12152 KB Output is correct