oj.uz

Submission #845895

# Submission time Handle Problem Language Result Execution time Memory
845895 2023-09-06T18:07:22 Z mickey080929 Sandwich (JOI16_sandwich) C++17
35 / 100
 8000 ms 2952 KB 
#include <bits/stdc++.h>

using namespace std;

int n, m;
int a[410][410];
int vis[410][410];
int chk[410][410];
int num = 0;

int dx[] = {-1, 0, 1, 0};
int dy[] = {0, 1, 0, -1};

int dfs(int x, int y, int d) {
    vis[x][y] = num << 1 | d;
    for (int i=0; i<2; i++) {
        int t = (d<<1) + a[x][y] + i; if (t >= 4) t -= 4;
        int nx = x + dx[t];
        int ny = y + dy[t];
        if (nx <= 0 || nx > n || ny <= 0 || ny > m) continue;
        int nd = (t >= a[nx][ny] && t <= 1+a[nx][ny]) ^ 1;
        if (vis[nx][ny] == (num << 1 | nd)) {
            if (chk[nx][ny] == num) continue;
            return 0;
        }
        if (vis[nx][ny] == (num << 1 | nd ^ 1)) return 0;
        if (!dfs(nx, ny, nd)) return 0;
    }
    chk[x][y] = num;
    return 1;
}

int solve(int sx, int sy, int sd) {
    num ++;
    if (!dfs(sx, sy, sd)) return -1;
    int ans = 0;
    for (int i=1; i<=n; i++) {
        for (int j=1; j<=m; j++) {
            ans += (vis[i][j] >= (num << 1));
        }
    }
    return ans << 1;
}

int main() {
    scanf("%d %d", &n, &m);
    for (int i=1; i<=n; i++) {
        for (int j=1; j<=m; j++) {
            char c;
            scanf(" %c", &c);
            if (c == 'N') a[i][j] = 0;
            else a[i][j] = 1;
        }
    }
    for (int i=1; i<=n; i++) {
        for (int j=1; j<=m; j++) {
            int t1 = solve(i, j, 0), t2 = solve(i, j, 1);
            if (t1 == -1) printf("%d ", t2);
            else if (t2 == -1) printf("%d ", t1);
            else printf("%d ", min(t1, t2));
        }
        printf("\n");
    }
}

Compilation message

sandwich.cpp: In function 'int dfs(int, int, int)':
sandwich.cpp:26:43: warning: suggest parentheses around arithmetic in operand of '|' [-Wparentheses]
   26 |         if (vis[nx][ny] == (num << 1 | nd ^ 1)) return 0;
      |                                        ~~~^~~
sandwich.cpp: In function 'int main()':
sandwich.cpp:46:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |     scanf("%d %d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~~
sandwich.cpp:50:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |             scanf(" %c", &c);
      |             ~~~~~^~~~~~~~~~~

Subtask #1
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 3 ms 604 KB Output is correct
7 Correct 70 ms 696 KB Output is correct
8 Correct 82 ms 676 KB Output is correct
9 Correct 42 ms 648 KB Output is correct
10 Correct 83 ms 604 KB Output is correct
11 Correct 101 ms 848 KB Output is correct
12 Correct 34 ms 604 KB Output is correct
13 Correct 109 ms 712 KB Output is correct
14 Correct 107 ms 604 KB Output is correct
15 Correct 55 ms 676 KB Output is correct
16 Correct 46 ms 604 KB Output is correct
17 Correct 51 ms 848 KB Output is correct
18 Correct 46 ms 676 KB Output is correct
19 Correct 47 ms 600 KB Output is correct
20 Correct 45 ms 676 KB Output is correct
21 Correct 42 ms 600 KB Output is correct
22 Correct 43 ms 600 KB Output is correct
23 Correct 47 ms 600 KB Output is correct
24 Correct 103 ms 724 KB Output is correct
25 Correct 104 ms 604 KB Output is correct
26 Correct 108 ms 600 KB Output is correct
27 Correct 107 ms 684 KB Output is correct
28 Correct 103 ms 600 KB Output is correct

Subtask #2
0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 3 ms 604 KB Output is correct
7 Correct 70 ms 696 KB Output is correct
8 Correct 82 ms 676 KB Output is correct
9 Correct 42 ms 648 KB Output is correct
10 Correct 83 ms 604 KB Output is correct
11 Correct 101 ms 848 KB Output is correct
12 Correct 34 ms 604 KB Output is correct
13 Correct 109 ms 712 KB Output is correct
14 Correct 107 ms 604 KB Output is correct
15 Correct 55 ms 676 KB Output is correct
16 Correct 46 ms 604 KB Output is correct
17 Correct 51 ms 848 KB Output is correct
18 Correct 46 ms 676 KB Output is correct
19 Correct 47 ms 600 KB Output is correct
20 Correct 45 ms 676 KB Output is correct
21 Correct 42 ms 600 KB Output is correct
22 Correct 43 ms 600 KB Output is correct
23 Correct 47 ms 600 KB Output is correct
24 Correct 103 ms 724 KB Output is correct
25 Correct 104 ms 604 KB Output is correct
26 Correct 108 ms 600 KB Output is correct
27 Correct 107 ms 684 KB Output is correct
28 Correct 103 ms 600 KB Output is correct
29 Correct 3 ms 348 KB Output is correct
30 Correct 4 ms 2396 KB Output is correct
31 Correct 129 ms 2244 KB Output is correct
32 Correct 80 ms 2128 KB Output is correct
33 Correct 28 ms 1628 KB Output is correct
34 Execution timed out 8019 ms 2952 KB Time limit exceeded
35 Halted 0 ms 0 KB -