oj.uz

Submission #238849

# Submission time Handle Problem Language Result Execution time Memory
238849 2020-06-13T08:17:28 Z arnold518 Red-blue table (IZhO19_stones) C++14
100 / 100
 63 ms 2272 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 1000;

int TC, N, M;
char S[MAXN+10][MAXN+10];

int main()
{
	int i, j, k;

	scanf("%d", &TC);
	while(TC--)
	{
		scanf("%d%d", &N, &M);

		int ans=0; pii t;
		for(i=0; i<=N; i++)
		{
			for(j=0; j<=M; j++)
			{
				int x=min((M-1)/2, j);
				int y=max(0, i-(N-1)/2);
				if(x*i>=y*j) { if(ans<=i+j) ans=i+j, t={i, j}; }
			}
		}

		for(i=0; i<N; i++) for(j=0; j<M; j++) S[i][j]='+';

		int a=t.first, b=t.second;
		int x=min((M-1)/2, b);
		int y=max(0, a-(N-1)/2);

		for(j=0, i=0; j<b; j++)
		{
			for(k=0; k<y; k++, i=(i+1)%a)
			{
				S[i][j]='-';
			}
		}
		for(i=a; i<N; i++) for(j=0; j<b; j++) S[i][j]='-';

		printf("%d\n", ans);
		for(i=0; i<N; i++) { for(j=0; j<M; j++) printf("%c", S[i][j]); printf("\n"); }
	}
}

Compilation message

stones.cpp: In function 'int main()':
stones.cpp:36:7: warning: unused variable 'x' [-Wunused-variable]
   int x=min((M-1)/2, b);
       ^
stones.cpp:17:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &TC);
  ~~~~~^~~~~~~~~~~
stones.cpp:20:8: 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 4 ms 256 KB Output is correct
2 Correct 4 ms 384 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 6 ms 384 KB Output is correct
4 Correct 7 ms 384 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 1528 KB Output is correct
2 Correct 53 ms 1912 KB Output is correct
3 Correct 51 ms 2168 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 1400 KB Output is correct
2 Correct 47 ms 1912 KB Output is correct
3 Correct 49 ms 1656 KB Output is correct

Subtask #6
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 6 ms 384 KB Output is correct
4 Correct 7 ms 384 KB Output is correct
5 Correct 57 ms 1528 KB Output is correct
6 Correct 53 ms 1912 KB Output is correct
7 Correct 51 ms 2168 KB Output is correct
8 Correct 56 ms 1400 KB Output is correct
9 Correct 47 ms 1912 KB Output is correct
10 Correct 49 ms 1656 KB Output is correct
11 Correct 15 ms 640 KB Output is correct
12 Correct 49 ms 1912 KB Output is correct
13 Correct 55 ms 2012 KB Output is correct
14 Correct 34 ms 1664 KB Output is correct
15 Correct 63 ms 2272 KB Output is correct
16 Correct 42 ms 1912 KB Output is correct
17 Correct 22 ms 1280 KB Output is correct