Submission #1095597

#	Time	Username	Problem	Language	Result	Execution time	Memory
1095597		peti1234	Gardening (RMI21_gardening)	C++17	100 / 100	43 ms	5724 KiB

Main

#include <bits/stdc++.h>

using namespace std;
const int c=200005;
vector<int> ans[c];
bool jo(int n, int m, int k) {
	int a=max(n, m)/2, b=n*m/4;
	if (n%2 || m%2 || k<a || k>b || k==b-1 || (n==m && k==a+1)) return false;
	return true;
}
void rec(int n1, int n2, int m1, int m2, int k) {
	int n=n2-n1+1, m=m2-m1+1;
	if (n==0 || m==0) {
		return;
	}
	if (jo(n-2, m-2, k-1)) {
		for (int i=n1; i<=n2; i++) {
			ans[i][m1]=k, ans[i][m2]=k;
		}
		for (int i=m1; i<=m2; i++) {
			ans[n1][i]=k, ans[n2][i]=k;
		}
		return rec(n1+1, n2-1, m1+1, m2-1, k-1);
	}
	if (jo(n-2, m, k-(m/2))) {
		for (int i=m1; i<=m2; i+=2) {
			ans[n1][i]=ans[n1][i+1]=ans[n1+1][i]=ans[n1+1][i+1]=k;
			k--;
		}
		return rec(n1+2, n2, m1, m2, k);
	}
	if (jo(n, m-2, k-(n/2))) {
		for (int i=n1; i<=n2; i+=2) {
			ans[i][m1]=ans[i+1][m1]=ans[i][m1+1]=ans[i+1][m1+1]=k;
			k--;
		}
		return rec(n1, n2, m1+2, m2, k);
	}
}
void solve() {
	int n, m, k;
	cin >> n >> m >> k;
	if (!jo(n, m, k)) {
		cout << "NO\n";
		return;
	}
	for (int i=1; i<=n; i++) {
		ans[i].resize(m+1);
	}
	rec(1, n, 1, m, k);
	
	cout << "YES\n";
	for (int i=1; i<=n; i++) {
		for (int j=1; j<=m; j++) {
			cout << ans[i][j] << " ";
		}
		cout << "\n";
	}
}

int main() {
	ios_base::sync_with_stdio(false);
	int w;
	cin >> w;
	while (w--) {
		solve();
	}
}

• Subtask 1: 5 / 5
• Subtask 2: 6 / 6
• Subtask 3: 10 / 10
• Subtask 4: 18 / 18
• Subtask 5: 39 / 39
• Subtask 6: 22 / 22