제출 #1119508

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1119508		vjudge1	Count Squares (CEOI19_countsquares)	C++17	100 / 100	2035 ms	105824 KiB

countsquares

#include <bits/stdc++.h>
#define pb push_back
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define f first
#define s second

using namespace std;
using ll = long long;
using pii = pair <int, int>;
const int N = 2e3 + 5;

int h, v, x[N], y[N];

int main() {
	ios :: sync_with_stdio(0);
	cin.tie(0);
	cin >> h >> v;
	map <int, int> cnt;
	for (int i = 1; i <= h; ++i) {
		cin >> x[i];
		for (int j = i - 1; j > 0; j--) {
			cnt[x[i] - x[j]]++;
		}
	}
	int ans = 0;
	for (int i = 1; i <= v; ++i) {
		cin >> y[i];
		for (int j = i - 1; j > 0; j--) {
			ans += cnt[y[i] - y[j]];
		}
	}
	cout << ans;
	return 0;
}

• Subtask 1: 7 / 7
• Subtask 2: 40 / 40
• Subtask 3: 53 / 53