oj.uz

Submission #171034

# Submission time Handle Problem Language Result Execution time Memory
171034 2019-12-27T06:21:43 Z antimirage Red-blue table (IZhO19_stones) C++14
100 / 100
 49 ms 5240 KB 
#include <bits/stdc++.h>
    
#define fr first
#define sc second
#define mk make_pair
#define pb push_back
#define all(s) s.begin(), s.end()
    
using namespace std;

const int N = 1005;

int tests, n, m, a[N][N], cn[N], ans;

void Fill (int x) {
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= m; j++) {
			a[i][j] = x;
		}
	}
}
int Nxt(int x, int o) {
	x++;
	if (x > o) x = 1;
	return x;
}

main() {
	cin >> tests;
	while (tests--) {
		memset(cn, 0, sizeof(cn) );
		scanf("%d%d", &n, &m);
		int l = 1;
		if (n >= m) {
			ans = n;
			Fill(0);
			for (int i = 1; i <= m; i++) {
				bool ok = 0;
				for (int j = 0; j < n / 2 + 1; j++) {
					if (cn[l] + 1 >= (m + 1) / 2) {
						ok = 1;
						break;
					}
					a[l][i] = 1; cn[l]++;
					l = Nxt(l, n);
				}
				if (ok) break;
				ans++;
			}
		} else {
			ans = m;
			Fill(1);
			for (int i = 1; i <= n; i++) {
				bool ok = 0;
				for (int j = 0; j < m / 2 + 1; j++) {
					if (cn[l] + 1 >= (n + 1) / 2) {
						ok = 1;
						break;
					}
					a[i][l] = 0; cn[l]++;
					l = Nxt(l, m);
				}
				if (ok) break;
				ans++;
			}
		}
		printf("%d\n", ans);
		for (int i = 1; i <= n; i++) {
			for (int j = 1; j <= m; j++) {
				printf(a[i][j] == 0 ? "+" : "-");
			}
			printf("\n");
		}
	}
}

Compilation message

stones.cpp:28:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
stones.cpp: In function 'int main()':
stones.cpp:32:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &n, &m);
   ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 504 KB Output is correct
4 Correct 4 ms 376 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 1784 KB Output is correct
2 Correct 48 ms 4216 KB Output is correct
3 Correct 41 ms 4984 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 1912 KB Output is correct
2 Correct 39 ms 3964 KB Output is correct
3 Correct 35 ms 3320 KB Output is correct

Subtask #6
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 504 KB Output is correct
4 Correct 4 ms 376 KB Output is correct
5 Correct 43 ms 1784 KB Output is correct
6 Correct 48 ms 4216 KB Output is correct
7 Correct 41 ms 4984 KB Output is correct
8 Correct 44 ms 1912 KB Output is correct
9 Correct 39 ms 3964 KB Output is correct
10 Correct 35 ms 3320 KB Output is correct
11 Correct 12 ms 760 KB Output is correct
12 Correct 37 ms 4216 KB Output is correct
13 Correct 39 ms 4728 KB Output is correct
14 Correct 29 ms 4004 KB Output is correct
15 Correct 49 ms 5240 KB Output is correct
16 Correct 33 ms 4208 KB Output is correct
17 Correct 18 ms 3320 KB Output is correct