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  1. #include <iostream>
  2. using namespace std;
  3. bool vis[1001][1001];
  4. char c[1001][1001];
  5. int m,n;
  6. int rec(int i1,int j1)
  7. {
  8.     //cout<<i1<<" "<<j1<<endl;
  9.     if(i1+1<m&&!vis[i1+1][j1]&&c[i1+1][j1]=='f')
  10.     {
  11.         vis[i1+1][j1]=1;
  12.         return 1;
  13.     }
  14.     if(i1+1<m&&!vis[i1+1][j1]&&c[i1+1][j1]=='b')
  15.     {
  16.         vis[i1+1][j1]=1;
  17.         if(rec(i1+1,j1))
  18.             return 1;
  19.         vis[i1+1][j1]=0;
  20.     }
  21.     if(i1-1>=0&&!vis[i1-1][j1]&&c[i1-1][j1]=='f')
  22.     {
  23.         vis[i1-1][j1]=1;
  24.         return 1;
  25.     }
  26.     if(i1-1>=0&&!vis[i1-1][j1]&&c[i1-1][j1]=='b')
  27.     {
  28.         vis[i1-1][j1]=1;
  29.         if(rec(i1-1,j1))
  30.             return 1;
  31.         vis[i1-1][j1]=0;
  32.     }
  33.     if(j1+1<n&&!vis[i1][j1+1]&&c[i1][j1+1]=='f')
  34.     {
  35.         vis[i1][j1+1]=1;
  36.         return 1;
  37.     }
  38.     if(j1+1<n&&!vis[i1][j1+1]&&c[i1][j1+1]=='b')
  39.     {
  40.         vis[i1][j1+1]=1;
  41.         if(rec(i1,j1+1))
  42.             return 1;
  43.         vis[i1][j1+1]=0;
  44.     }
  45.     if(j1-1>=0&&!vis[i1][j1-1]&&c[i1][j1-1]=='f')
  46.     {
  47.         vis[i1][j1-1]=1;
  48.         return 1;
  49.     }
  50.     if(j1-1>=0&&!vis[i1][j1-1]&&c[i1][j1-1]=='b')
  51.     {
  52.         vis[i1][j1-1]=1;
  53.         if(rec(i1,j1-1))
  54.             return 1;
  55.         vis[i1][j1-1]=0;
  56.     }
  57.     return 0;    
  58. }
  59. int main()
  60. {
  61.     int t,i1,j1;
  62.     cin>>t;
  63.     while(t--)
  64.     {
  65.         cin>>m>>n;
  66.         for(int i=0;i<m;i++)
  67.         {
  68.             for(int j=0;j<n;j++)
  69.             {
  70.                 cin>>c[i][j];
  71.                 if(c[i][j]=='s')
  72.                 {
  73.                     i1=i;
  74.                     j1=j;
  75.                 }
  76.             }
  77.         }
  78.         vis[i1][j1]=1;
  79.         if(rec(i1,j1))
  80.             for(int i=0;i<m;cout<<endl,i++)
  81.                 for(int j=0;j<n;vis[i][j]=0,j++)
  82.                     if(vis[i][j])
  83.                         cout<<c[i][j];
  84.                     else
  85.                         cout<<'-';
  86.         else
  87.             cout<<"The path doesn't exist."<<endl;
  88.         vis[i1][j1]=0;
  89.     }
  90.     return 0;
  91. }
Success #stdin #stdout 0s 4856KB
comments (?)
stdin
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2
6 5
bbbbw
bwwfw
bbbww
bwwww
bbbbw
wwwbs

4 4
bbbw
wwfw
bwww
bbbs
stdout
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bbbb-
b--f-
b----
b----
bbbb-
---bs
The path doesn't exist.
https://ideone.com/vEiSdF
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
secret

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