oj.uz

Submission #126166

# Submission time Handle Problem Language Result Execution time Memory
126166 2019-07-07T07:19:44 Z choikiwon Sandwich (JOI16_sandwich) C++17
100 / 100
 3679 ms 7032 KB 
#include<bits/stdc++.h>
using namespace std;

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

const int MN = 444;

int N, M;
char G[MN][MN];
int vis[MN][MN];
int ans[MN][MN];
int cnt;

void dfs(int r, int c, int t) {
    if(vis[r][c] == 2) return;
    if(vis[r][c] == 1) {
        cnt = 1e9;
        return;
    }
    vis[r][c] = 1;
    cnt++;

    if(t) {
        if(G[r][c] == 'N') {
            if(r) dfs(r - 1, c, 1);
            if(c + 1 < M) dfs(r, c + 1, G[r][c + 1] == 'N');
        }
        else {
            if(r) dfs(r - 1, c, 1);
            if(c) dfs(r, c - 1, G[r][c - 1] == 'Z');
        }
    }
    else {
        if(G[r][c] == 'N') {
            if(r + 1 < N) dfs(r + 1, c, 0);
            if(c) dfs(r, c - 1, G[r][c - 1] == 'Z');
        }
        else {
            if(r + 1 < N) dfs(r + 1, c, 0);
            if(c + 1 < M) dfs(r, c + 1, G[r][c + 1] == 'N');
        }
    }

    vis[r][c] = 2;
}

int main() {
    scanf("%d %d", &N, &M);

    for(int i = 0; i < N; i++) {
        scanf("\n");
        for(int j = 0; j < M; j++) {
            scanf("%c", &G[i][j]);
        }
    }

    for(int i = 0; i < N; i++) for(int j = 0; j < M; j++) ans[i][j] = 1e9;

    for(int i = 0; i < M; i++) {
        memset(vis, 0, sizeof(vis));
        cnt = 0;

        for(int j = 0; j < N; j++) {
            if(!vis[j][i]) dfs(j, i, 1);
            ans[j][i] = min(ans[j][i], cnt);
        }

        memset(vis, 0, sizeof(vis));
        cnt = 0;

        for(int j = N - 1; j >= 0; j--) {
            if(!vis[j][i]) dfs(j, i, 0);
            ans[j][i] = min(ans[j][i], cnt);
        }
    }

    for(int i = 0; i < N; i++) {
        for(int j = 0; j < M; j++) {
            if(ans[i][j] >= 1e9) printf("-1 ");
            else printf("%d ", 2 * ans[i][j]);
        }
        printf("\n");
    }
}

Compilation message

sandwich.cpp: In function 'int main()':
sandwich.cpp:49:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &N, &M);
     ~~~~~^~~~~~~~~~~~~~~~~
sandwich.cpp:52:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("\n");
         ~~~~~^~~~~~
sandwich.cpp:54:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%c", &G[i][j]);
             ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1016 KB Output is correct
2 Correct 7 ms 1144 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 12 ms 1272 KB Output is correct
7 Correct 9 ms 1272 KB Output is correct
8 Correct 10 ms 1272 KB Output is correct
9 Correct 8 ms 1148 KB Output is correct
10 Correct 10 ms 1272 KB Output is correct
11 Correct 10 ms 1272 KB Output is correct
12 Correct 8 ms 1144 KB Output is correct
13 Correct 10 ms 1272 KB Output is correct
14 Correct 10 ms 1272 KB Output is correct
15 Correct 8 ms 1144 KB Output is correct
16 Correct 8 ms 1144 KB Output is correct
17 Correct 8 ms 1272 KB Output is correct
18 Correct 8 ms 1272 KB Output is correct
19 Correct 9 ms 1144 KB Output is correct
20 Correct 9 ms 1320 KB Output is correct
21 Correct 9 ms 1144 KB Output is correct
22 Correct 8 ms 1144 KB Output is correct
23 Correct 8 ms 1144 KB Output is correct
24 Correct 10 ms 1244 KB Output is correct
25 Correct 10 ms 1260 KB Output is correct
26 Correct 11 ms 1304 KB Output is correct
27 Correct 10 ms 1276 KB Output is correct
28 Correct 10 ms 1272 KB Output is correct

Subtask #2
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1016 KB Output is correct
2 Correct 7 ms 1144 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 12 ms 1272 KB Output is correct
7 Correct 9 ms 1272 KB Output is correct
8 Correct 10 ms 1272 KB Output is correct
9 Correct 8 ms 1148 KB Output is correct
10 Correct 10 ms 1272 KB Output is correct
11 Correct 10 ms 1272 KB Output is correct
12 Correct 8 ms 1144 KB Output is correct
13 Correct 10 ms 1272 KB Output is correct
14 Correct 10 ms 1272 KB Output is correct
15 Correct 8 ms 1144 KB Output is correct
16 Correct 8 ms 1144 KB Output is correct
17 Correct 8 ms 1272 KB Output is correct
18 Correct 8 ms 1272 KB Output is correct
19 Correct 9 ms 1144 KB Output is correct
20 Correct 9 ms 1320 KB Output is correct
21 Correct 9 ms 1144 KB Output is correct
22 Correct 8 ms 1144 KB Output is correct
23 Correct 8 ms 1144 KB Output is correct
24 Correct 10 ms 1244 KB Output is correct
25 Correct 10 ms 1260 KB Output is correct
26 Correct 11 ms 1304 KB Output is correct
27 Correct 10 ms 1276 KB Output is correct
28 Correct 10 ms 1272 KB Output is correct
29 Correct 36 ms 1196 KB Output is correct
30 Correct 5 ms 2040 KB Output is correct
31 Correct 3679 ms 6520 KB Output is correct
32 Correct 3674 ms 6392 KB Output is correct
33 Correct 292 ms 3064 KB Output is correct
34 Correct 903 ms 3192 KB Output is correct
35 Correct 848 ms 2808 KB Output is correct
36 Correct 5 ms 2040 KB Output is correct
37 Correct 1194 ms 3164 KB Output is correct
38 Correct 1158 ms 3192 KB Output is correct
39 Correct 1176 ms 3192 KB Output is correct
40 Correct 1663 ms 3292 KB Output is correct
41 Correct 1045 ms 2428 KB Output is correct
42 Correct 1614 ms 3704 KB Output is correct
43 Correct 1607 ms 3448 KB Output is correct
44 Correct 1604 ms 3576 KB Output is correct
45 Correct 881 ms 3080 KB Output is correct
46 Correct 615 ms 3192 KB Output is correct
47 Correct 691 ms 3088 KB Output is correct
48 Correct 409 ms 2808 KB Output is correct
49 Correct 616 ms 3192 KB Output is correct
50 Correct 748 ms 3192 KB Output is correct
51 Correct 620 ms 3192 KB Output is correct
52 Correct 661 ms 3192 KB Output is correct
53 Correct 636 ms 3064 KB Output is correct
54 Correct 593 ms 3068 KB Output is correct
55 Correct 626 ms 3192 KB Output is correct
56 Correct 642 ms 3068 KB Output is correct
57 Correct 440 ms 2780 KB Output is correct
58 Correct 1636 ms 3936 KB Output is correct
59 Correct 1678 ms 3724 KB Output is correct
60 Correct 1172 ms 3324 KB Output is correct
61 Correct 1940 ms 7032 KB Output is correct
62 Correct 1515 ms 3320 KB Output is correct
63 Correct 1518 ms 3192 KB Output is correct