oj.uz

Submission #202988

# Submission time Handle Problem Language Result Execution time Memory
202988 2020-02-18T21:52:57 Z luciocf Red-blue table (IZhO19_stones) C++14
15 / 100
 80 ms 1912 KB 
#include <bits/stdc++.h>

using namespace std;

const int maxn = 1e3+10;

struct S
{
	int ind, qtd;
} col[maxn];

char tab[maxn][maxn];

bool comp(S a, S b) {return a.qtd > b.qtd;}

int main(void)
{
	int t;
	scanf("%d", &t);

	while (t--)
	{
		int n, m;
		scanf("%d %d", &n, &m);

		for (int i = 1; i <= m; i++)
			col[i] = {i, n};

		int mx = m, opt = 0;
		int tot = m;

		for (int A = 1; A <= n; A++)
		{
			sort(col+1, col+m+1, comp);

			for (int i = 1, cnt = 0; i <= m && cnt < (m+2)/2; i++)
			{
				cnt++;
				col[i].qtd--;

				if (col[i].qtd+1 >= (n+2)/2 && col[i].qtd < (n+2)/2) tot--;
			}

			if (A+tot > mx)
			{
				mx = A+tot;
				opt = A;
			}
		}

		for (int i = 1; i <= n; i++)
			for (int j = 1; j <= m; j++)
				tab[i][j] = '-';

		for (int i = 1; i <= m; i++)
			col[i] = {i, n};

		for (int A = 1; A <= opt; A++)
		{
			sort(col+1, col+m+1, comp);

			for (int i = 1, cnt = 0; i <= m && cnt < (m+2)/2; i++)
			{
				cnt++;
				col[i].qtd--;

				tab[A][col[i].ind] = '+';
			}
		}

		printf("%d\n", mx);
		for (int i = 1; i <= n; i++)
		{
			for (int j = 1; j <= m; j++)
				printf("%c", tab[i][j]);
			printf("\n");
		}
	}
}

Compilation message

stones.cpp: In function 'int main()':
stones.cpp:19:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &t);
  ~~~~~^~~~~~~~~~
stones.cpp:24:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &n, &m);
   ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Incorrect 5 ms 376 KB Wrong answer in test 4 3: 4 < 5

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 7 ms 376 KB Wrong answer in test 4 3: 4 < 5

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Incorrect 5 ms 376 KB Wrong answer in test 4 3: 4 < 5

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 78 ms 1528 KB Wrong answer in test 97 21: 112 < 116
2 Halted 0 ms 0 KB -

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 1532 KB Output is correct
2 Correct 70 ms 1912 KB Output is correct
3 Correct 68 ms 1656 KB Output is correct

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Incorrect 5 ms 376 KB Wrong answer in test 4 3: 4 < 5