oj.uz

Submission #167424

# Submission time Handle Problem Language Result Execution time Memory
167424 2019-12-08T14:17:22 Z tincamatei Red-blue table (IZhO19_stones) C++14
15 / 100
 28 ms 1932 KB 
#include <bits/stdc++.h>

using namespace std;

const int MAX_N = 1000;
char matr[MAX_N][MAX_N];

int main() {
	int T, N, M;
	scanf("%d", &T);
	while(T--) {
		int best = 0, bestFR = -1;
		bool forced = false;
		scanf("%d%d", &N, &M);
		
		for(int fixedRows = 0; fixedRows <= N; ++fixedRows) {
			int fixedColumns = 0;
			int reqCols = (M + 2) / 2, pluses = reqCols * fixedRows;
			int fullLayers = pluses / M, overflownLayers = pluses % M, normalLayers = M - overflownLayers;
			
			if(N - fullLayers >= (N + 2) / 2)
				fixedColumns += normalLayers;
			if(N - (fullLayers + 1) >= (N + 2) / 2)
				fixedColumns += overflownLayers;
	
			if(fixedColumns + fixedRows > best) {
				best = fixedColumns + fixedRows;
				bestFR = fixedRows;
				forced = false;
			}

			fixedColumns = (M - 1) / 2;
			if(fixedColumns + fixedRows > best) {
				best = fixedColumns + fixedRows;
				forced = true;
			}
		}
	
		for(int r = 0; r < N; ++r)
			for(int c = 0; c < M; ++c)
				matr[r][c] = '-';
	
		int lastP = 0;
		printf("%d\n", best);
		for(int i = 0; i < bestFR; ++i) {
			for(int j = 0; j < (M + 2) / 2; ++j) {
				if(forced)
					matr[i][j] = '+';
				else
					matr[i][lastP] = '+';
				lastP = (lastP + 1) % M;
			}
		}

		for(int r = 0; r < N; ++r) {
			for(int c = 0; c < M; ++c)
				fputc(matr[r][c], stdout);
			printf("\n");
		}
	}
	return 0;
}

Compilation message

stones.cpp: In function 'int main()':
stones.cpp:10:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &T);
  ~~~~~^~~~~~~~~~
stones.cpp:14:8: 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 2 ms 256 KB Output is correct
2 Incorrect 2 ms 376 KB in the table A+B is not equal to 5

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 376 KB in the table A+B is not equal to 5

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Incorrect 2 ms 376 KB in the table A+B is not equal to 5

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 28 ms 1484 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 28 ms 1524 KB Output is correct
2 Correct 23 ms 1932 KB Output is correct
3 Correct 21 ms 1656 KB Output is correct

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Incorrect 2 ms 376 KB in the table A+B is not equal to 5