oj.uz

Submission #359071

# Submission time Handle Problem Language Result Execution time Memory
359071 2021-01-26T09:57:31 Z jesus_coconut Count Squares (CEOI19_countsquares) C++17
100 / 100
 2233 ms 158616 KB 
#include <bits/stdc++.h>

using namespace std;

int H, V;
vector<int> h, v;

void read() {
	cin >> H >> V;
	h.resize(H);
	v.resize(V);
	for (auto &a : h) cin >> a;
	for (auto &a : v) cin >> a;
}

map<int, int> calcDiff(vector<int> const &v) {
	map<int, int> ret;
	for (int i = 0; i < (int)v.size(); ++i) {
		for (int j = i + 1; j < (int)v.size(); ++j) {
			ret[v[j] - v[i]]++;
		}
	}
	return ret;
}

void solve() {
	read();
	auto mh = calcDiff(h);
	auto mv = calcDiff(v);
	using ll = long long;
	ll ans = 0;
	for (auto &[key, val] : mh) {
		ans += val * mv[key];
	}
	cout << ans << '\n';
}

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);

	solve();

	return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 230 ms 25684 KB Output is correct
7 Correct 198 ms 25708 KB Output is correct
8 Correct 177 ms 25708 KB Output is correct
9 Correct 193 ms 24960 KB Output is correct
10 Correct 10 ms 876 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 230 ms 25684 KB Output is correct
7 Correct 198 ms 25708 KB Output is correct
8 Correct 177 ms 25708 KB Output is correct
9 Correct 193 ms 24960 KB Output is correct
10 Correct 10 ms 876 KB Output is correct
11 Correct 2211 ms 158612 KB Output is correct
12 Correct 2230 ms 158616 KB Output is correct
13 Correct 2233 ms 158572 KB Output is correct
14 Correct 2184 ms 156884 KB Output is correct
15 Correct 78 ms 1772 KB Output is correct