oj.uz

Submission #723460

# Submission time Handle Problem Language Result Execution time Memory
723460 2023-04-13T20:41:15 Z lovrot Nautilus (BOI19_nautilus) C++17
66 / 100
 1000 ms 1200 KB 
#include <cstdio> 
#include <cstring>

#pragma GCC optimize("Ofast")

using namespace std;

const int N = 510; 
const int lx[4] = {1, -1, 0, 0}; 
const int ly[4] = {0, 0, -1, 1}; 

int n, m, q;
bool dp[2][N][N], mat[N][N]; 

int main() {
	scanf("%d%d%d", &n, &m, &q); 
	for(int i = 1; i <= n; i++) 
		for(int j = 1; j <= m; j++) {
			char c;
			scanf(" %c", &c); 
			dp[0][i][j] = c == '.'; 
			mat[i][j] = !dp[0][i][j]; 
		}
	bool flag = 1;
	for(int t = 0; t < q; t++) {
		char c;
		scanf(" %c", &c);
		// printf("%c\n", c);
		int x = -1; 
		if(c == 'S') x = 1;
		if(c == 'N') x = 0;
		if(c == 'W') x = 3;
		if(c == 'E') x = 2;

		if(x == -1) {
			memset(dp[flag], 0, sizeof(dp[flag]));
			for(int i = 1; i <= n; i++) 
				for(int j = 1; j <= m; j++)
					for(int k = 0; k < 4; k++)
						dp[flag][i][j] |= !mat[i][j] && dp[!flag][i + lx[k]][j + ly[k]];
		} else {
			for(int i = 1; i <= n; i++) 
				for(int j = 1; j <= m; j++)
					dp[flag][i][j] = !mat[i][j] && dp[!flag][i + lx[x]][j + ly[x]];
		}
		flag ^= 1;
	}
	int sol = 0;
	for(int i = 1; i <= n; i++)
		for(int j = 1; j <= m; j++)
			sol += dp[!flag][i][j]; 
	printf("%d\n", sol);
	return 0;
}

Compilation message

nautilus.cpp: In function 'int main()':
nautilus.cpp:16:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |  scanf("%d%d%d", &n, &m, &q);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~
nautilus.cpp:20:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |    scanf(" %c", &c);
      |    ~~~~~^~~~~~~~~~~
nautilus.cpp:27:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |   scanf(" %c", &c);
      |   ~~~~~^~~~~~~~~~~

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 340 KB Output is correct
2 Correct 3 ms 424 KB Output is correct
3 Correct 4 ms 340 KB Output is correct
4 Correct 5 ms 452 KB Output is correct
5 Correct 3 ms 340 KB Output is correct
6 Correct 2 ms 340 KB Output is correct

Subtask #2
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 340 KB Output is correct
2 Correct 3 ms 424 KB Output is correct
3 Correct 4 ms 340 KB Output is correct
4 Correct 5 ms 452 KB Output is correct
5 Correct 3 ms 340 KB Output is correct
6 Correct 2 ms 340 KB Output is correct
7 Correct 3 ms 852 KB Output is correct
8 Correct 7 ms 852 KB Output is correct
9 Correct 6 ms 852 KB Output is correct
10 Correct 4 ms 852 KB Output is correct
11 Correct 2 ms 852 KB Output is correct
12 Correct 3 ms 852 KB Output is correct
13 Correct 8 ms 812 KB Output is correct
14 Correct 10 ms 860 KB Output is correct
15 Correct 5 ms 852 KB Output is correct
16 Correct 2 ms 812 KB Output is correct
17 Correct 4 ms 852 KB Output is correct
18 Correct 7 ms 812 KB Output is correct
19 Correct 7 ms 852 KB Output is correct
20 Correct 5 ms 808 KB Output is correct
21 Correct 3 ms 808 KB Output is correct

Subtask #3
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 340 KB Output is correct
2 Correct 3 ms 424 KB Output is correct
3 Correct 4 ms 340 KB Output is correct
4 Correct 5 ms 452 KB Output is correct
5 Correct 3 ms 340 KB Output is correct
6 Correct 2 ms 340 KB Output is correct
7 Correct 3 ms 852 KB Output is correct
8 Correct 7 ms 852 KB Output is correct
9 Correct 6 ms 852 KB Output is correct
10 Correct 4 ms 852 KB Output is correct
11 Correct 2 ms 852 KB Output is correct
12 Correct 3 ms 852 KB Output is correct
13 Correct 8 ms 812 KB Output is correct
14 Correct 10 ms 860 KB Output is correct
15 Correct 5 ms 852 KB Output is correct
16 Correct 2 ms 812 KB Output is correct
17 Correct 4 ms 852 KB Output is correct
18 Correct 7 ms 812 KB Output is correct
19 Correct 7 ms 852 KB Output is correct
20 Correct 5 ms 808 KB Output is correct
21 Correct 3 ms 808 KB Output is correct
22 Execution timed out 1077 ms 1200 KB Time limit exceeded
23 Halted 0 ms 0 KB -