Submission #168695

#	Time	Username	Problem	Language	Result	Execution time	Memory
168695		maruii	Cultivation (JOI17_cultivation)	C++14	5 / 100	2051 ms	504 KiB

cultivation

#include <bits/stdc++.h>
using namespace std;
using pii = pair<int, int>;
#define ff first
#define ss second

int A[50][50];
pii P[2500];
int R, C, N;

bool f(int a, int b, int c, int d) {
	for (int i = 1; i <= R; ++i) fill(A[i], A[i] + C + 1, 0);
	int cnt = 0;
	for (int i = 0; i < N; ++i) {
		for (int x = P[i].ff - a; x <= P[i].ff + b; ++x) {
			for (int y = P[i].ss - c; y <= P[i].ss + d; ++y) {
				if (x < 1 || x > R || y < 1 || y > C) continue;
				cnt += A[x][y] == 0;
				A[x][y] = 1;
			}
		}
	}
	return cnt == R * C;
}


int main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	cin >> R >> C >> N;
	for (int i = 0; i < N; ++i) {
		int x, y; cin >> x >> y;
		P[i] = {x, y};
	}
	int ans = R + C;
	for (int i = 0; i <= R; ++i) {
		for (int j = 0; j <= R - i; ++j) {
			for (int k = 0; k <= C; ++k) {
				for (int l = 0; l <= C - k; ++l) {
					if (f(i, j, k, l) && ans > i + j + k + l) ans = i + j + k + l;
				}
			}
		}
	}
	cout << ans;
	return 0;
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 30
• Subtask 5: 0 / 20
• Subtask 6: 0 / 20