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Submission #342287

# Submission time Handle Problem Language Result Execution time Memory
342287 2021-01-01T17:47:13 Z _ani Red-blue table (IZhO19_stones) C++17
0 / 100
 54 ms 1516 KB 
#include <iostream>
#include <algorithm>
using namespace std;
char s[1002][1002];
int main()
{
	int t;
	cin >> t;
	while (t--)
	{
		int n, m;
		cin >> n >> m;
		for (int i = 0; i < n; i++)
			for (int j = 0; j < m; j++)
				s[i][j] = '+';
		int A, B, ans;
		if (n > m) {
			A = n; B = 0; ans = n;
		}
		else {
			A = 0; B = m; ans = m;
		}
		for (int a = 1; a <= n; a++)
		{
			int k = (n + 1) / 2 - (n - a);
			if (k == 0)
			{
				if (a + m > ans)
				{
					ans = a + m; A = a; B = m;
				}
				continue;
			}
			int b = (m / 2) * a / k;
			while (k * b / a + ((k * b) % a ? 1 : 0) > m / 2)
				b--;
			if (a + b > ans)
			{
				ans = a + b; A = a; B = b;
			}
		}
		int i = 0, j = 0;
		int k = (n + 1) / 2 - (n - A);
		while (i < B)
		{
			int cnt = 0;
			while (cnt < k)
			{
				s[j][i] = '-';
				j++;
				if (j >= A)
					j = 0;
				cnt++;
			}
			i++;
		}
		for (int i = 0; i < B; i++)
			for (int j = A; j < n; j++)
				s[j][i] = '-';
		cout << ans << '\n';
		for (int i = 0; i < n; i++)
		{
			for (int j = 0; j < m; j++)
				cout << s[i][j];
			cout << '\n';
		}
	}
	return 0;
}

Subtask #1
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Incorrect 1 ms 364 KB in the table A+B is not equal to 6

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 364 KB in the table A+B is not equal to 22

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Incorrect 1 ms 364 KB in the table A+B is not equal to 6

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 50 ms 1388 KB in the table A+B is not equal to 539
2 Halted 0 ms 0 KB -

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 54 ms 1516 KB in the table A+B is not equal to 169
2 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Incorrect 1 ms 364 KB in the table A+B is not equal to 6