oj.uz

Submission #501714

# Submission time Handle Problem Language Result Execution time Memory
501714 2022-01-04T10:57:31 Z Mazaalai Red-blue table (IZhO19_stones) C++17
0 / 100
 27 ms 1296 KB 
#include <bits/stdc++.h>
using namespace std;
string s = "+-";
void go() {
	int n, m;
	cin >> n >> m;
	if (n == 1) {
		cout << m << '\n';
		for (int i = 0; i < m; i++) cout << s[1];
		cout << '\n';
		return;
	}
	if (m == 1) {
		cout << n << '\n';
		for (int i = 0; i < n; i++) cout << s[0] << '\n';
		return;
	}
	if (n == 2) {
		cout << m << '\n';
		for (int i = 0; i < m; i++) cout << s[1];
		cout << '\n';
		for (int i = 0; i < m; i++) cout << s[1];
		cout << '\n';
		return;	
	}
	if (m == 2) {
		cout << n << '\n';
		for (int i = 0; i < n; i++) cout << s[0] << s[0] << '\n';
		return;
	}
	if (n == 3) {
		cout << m+1 << '\n';
		for (int i = 0; i < m; i++) cout << s[1];
		cout << '\n';
		for (int i = 0; i < m; i++) cout << s[1];
		cout << '\n';
		for (int i = 0; i < m; i++) cout << s[0];
		cout << '\n';
	}
	if (m == 3) {
		cout << n+1 << '\n';
		for (int i = 0; i < n; i++) cout << s[0] << s[0] << s[1] << '\n';
		return;
	}
	if (n & 1 && m & 1) {
		cout << n+m-2 << '\n';
		for (int i = 1; i <= n; i++) {
			for (int j = 1; j <= m; j++) {
				if (i == n) cout << s[1];
				else if (j == m) cout << s[0];
				else cout << s[(i+j)%2];
			}
			cout << '\n';
		}
		return;
	}
	if (n == 4) {
		cout << m+1 << '\n';
		for (int i = 0; i < m; i++) cout << s[1];
		cout << '\n';
		for (int i = 0; i < m; i++) cout << s[1];
		cout << '\n';
		for (int i = 0; i < m; i++) cout << s[1];
		cout << '\n';
		for (int i = 0; i < m; i++) cout << s[0];
		cout << '\n';
		return;
	}
	if (m == 4) {
		cout << n << '\n';
		for (int i = 0; i < n; i++) cout << s[0] << s[0] << s[0] << s[1] << '\n';
		return;
	}
	if (n % 2 == 0 && m % 2 == 0) {
		cout << n+m-4 << '\n';
		for (int i = 1; i <= n; i++) {
			for (int j = 1; j <= m; j++) {
				if (i == n || i == n-1) cout << s[1];
				else if (j == m || j == m-1) cout << s[0];
				else cout << s[(i+j)%2];
			}
			cout << '\n';
		}
		return;
	}

}
signed main() {
	ios::sync_with_stdio(0);
	cin.tie();
	cout.tie();
	// freopen("in.txt", "r", stdin);
	// freopen("out.txt", "w", stdout);
	int T;
	cin >> T;
	while(T--) go();

}

Subtask #1
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Extra information in the output file
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 332 KB Wrong answer

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Extra information in the output file
2 Halted 0 ms 0 KB -

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 1248 KB Wrong answer
2 Halted 0 ms 0 KB -

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 27 ms 1296 KB Wrong answer
2 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Extra information in the output file
2 Halted 0 ms 0 KB -