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  1. #include<bits/stdc++.h>
  2. #define lli long long int
  3. using namespace std;
  4. char str[12][12];
  5. int vis[12][12];
  6. int main()
  7. {
  8.     ios::sync_with_stdio(false);
  9.     int w,h,p1,p2;
  10.     cin>>w>>h;
  11.     for(int i=1; i<=w; i++)
  12.     {
  13.         for(int j=1; j<=h; j++)
  14.         {
  15.             cin>>str[i][j];
  16.             if(str[i][j]=='U' ||str[i][j]=='L' || str[i][j]=='R' || str[i][j]=='D')
  17.             {
  18.                 p1=i;
  19.                 p2=j;
  20.             }
  21.         }
  22.     }
  23.     int ans=1;
  24.     vis[p1][p2]=1;
  25.     while(1)
  26.     {
  27.         bool flag=0;
  28.         if(str[p1][p2]=='U')
  29.         {
  30.             if(p1>1 &&(str[p1-1][p2]!='*' ))
  31.             {
  32.                 p1=p1-1;
  33.                 str[p1][p2]='U';
  34.                 if(!vis[p1][p2])
  35.                     ans++;
  36.                 vis[p1][p2]++;
  37.                 flag=1;
  38.             }
  39.             else if(p2<h &&(str[p1][p2+1]!='*' ))
  40.             {
  41.                 p2=p2+1;
  42.                 str[p1][p2]='R';
  43.                 if(!vis[p1][p2])
  44.                     ans++;
  45.                 vis[p1][p2]++;
  46.                 flag=1;
  47.             }
  48.             else if(p1<w && (str[p1+1][p2]!='*' ))
  49.             {
  50.                 p1=p1+1;
  51.                 str[p1][p2]='D';
  52.                 if(!vis[p1][p2])
  53.                     ans++;
  54.                 vis[p1][p2]++;
  55.                 flag=1;
  56.             }
  57.             else if(p2>1 && (str[p1][p2-1]!='*' ))
  58.             {
  59.                 p2=p2-1;
  60.                 str[p1][p2]='L';
  61.                 if(!vis[p1][p2])
  62.                     ans++;
  63.                 vis[p1][p2]++;
  64.                 flag=1;
  65.             }
  66.         }
  67.         else if(str[p1][p2]=='R')
  68.         {
  69.             if(p2<h &&(str[p1][p2+1]!='*' ))
  70.             {
  71.                 p2=p2+1;
  72.                 str[p1][p2]='R';
  73.                 if(!vis[p1][p2])
  74.                     ans++;
  75.                 vis[p1][p2]++;
  76.                 flag=1;
  77.             }
  78.             else if(p1<w && (str[p1+1][p2]!='*'))
  79.             {
  80.                 p1=p1+1;
  81.                 str[p1][p2]='D';
  82.                 if(!vis[p1][p2])
  83.                     ans++;
  84.                 vis[p1][p2]++;
  85.                 flag=1;
  86.             }
  87.             else if(p2>1 && (str[p1][p2-1]!='*' ))
  88.             {
  89.                 p2=p2-1;
  90.                 str[p1][p2]='L';
  91.                 if(!vis[p1][p2])
  92.                     ans++;
  93.                 vis[p1][p2]++;
  94.                 flag=1;
  95.             }
  96.             else if(p1>1 &&(str[p1-1][p2]!='*'))
  97.             {
  98.                 p1=p1-1;
  99.                 str[p1][p2]='U';
  100.                 if(!vis[p1][p2])
  101.                     ans++;
  102.                 vis[p1][p2]++;
  103.                 flag=1;
  104.             }
  105.  
  106.         }
  107.         else if(str[p1][p2]=='D')
  108.         {
  109.             if(p1<w && (str[p1+1][p2]!='*' ))
  110.             {
  111.                 p1=p1+1;
  112.                 str[p1][p2]='D';
  113.                 if(!vis[p1][p2])
  114.                     ans++;
  115.                 vis[p1][p2]++;
  116.                 flag=1;
  117.             }
  118.             else if(p2>1 && (str[p1][p2-1]!='*'))
  119.             {
  120.                 p2=p2-1;
  121.                 str[p1][p2]='L';
  122.                 if(!vis[p1][p2])
  123.                     ans++;
  124.                 vis[p1][p2]++;
  125.                 flag=1;
  126.             }
  127.             else if(p1>1 &&(str[p1-1][p2]!='*' ))
  128.             {
  129.                 p1=p1-1;
  130.                 str[p1][p2]='U';
  131.                 if(!vis[p1][p2])
  132.                     ans++;
  133.                 vis[p1][p2]++;
  134.                 flag=1;
  135.             }
  136.             else if(p2<h &&(str[p1][p2+1]!='*' ))
  137.             {
  138.                 p2=p2+1;
  139.                 str[p1][p2]='R';
  140.                 if(!vis[p1][p2])
  141.                     ans++;
  142.                 vis[p1][p2]++;
  143.                 flag=1;
  144.             }
  145.         }
  146.         else if(str[p1][p2]=='L')
  147.         {
  148.             if(p2>1 && (str[p1][p2-1]!='*' ))
  149.             {
  150.                 p2=p2-1;
  151.                 str[p1][p2]='L';
  152.                 if(!vis[p1][p2])
  153.                     ans++;
  154.                 vis[p1][p2]++;
  155.                 flag=1;
  156.             }
  157.             else if(p1>1 &&(str[p1-1][p2]!='*' ))
  158.             {
  159.                 p1=p1-1;
  160.                 str[p1][p2]='U';
  161.                 if(!vis[p1][p2])
  162.                     ans++;
  163.                 vis[p1][p2]++;
  164.                 flag=1;
  165.             }
  166.             else if(p2<h &&(str[p1][p2+1]!='*'))
  167.             {
  168.                 p2=p2+1;
  169.                 str[p1][p2]='R';
  170.                 if(!vis[p1][p2])
  171.                     ans++;
  172.                 vis[p1][p2]++;
  173.                 flag=1;
  174.             }
  175.             else if(p1<w && (str[p1+1][p2]!='*'))
  176.             {
  177.                 p1=p1+1;
  178.                 str[p1][p2]='D';
  179.                 if(!vis[p1][p2])
  180.                     ans++;
  181.                 vis[p1][p2]++;
  182.                 flag=1;
  183.             }
  184.         }
  185.         //cout<<str[p1][p2]<<endl;
  186.         if(vis[p1][p2]>10)
  187.             break;
  188.         if(!flag)
  189.         {
  190.             break;
  191.         }
  192.     }
  193.     cout<<ans<<endl;
  194.     return 0;
  195. }
Runtime error #stdin #stdout 0s 3452KB
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https://ideone.com/EuC5xL
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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