View Compilation Error

0_0_37787727_5538.cpp: In function 'void read()':
0_0_37787727_5538.cpp:60:11: error: 's2' was not declared in this scope
      cin>>s2[i];
           ^
0_0_37787727_5538.cpp:63:7: error: 's2' was not declared in this scope
       s2[i][j]=s2[i][j-1];
       ^
0_0_37787727_5538.cpp: In function 'int main()':
0_0_37787727_5538.cpp:73:12: error: 's2' was not declared in this scope
        if (s2[i][j]=='L') add(s,fn(i,j),1e9),add(fn(i,j),s,0),sum++;
            ^
0_0_37787727_5538.cpp:76:26: error: 'i' was not declared in this scope
      for (int i1=1;i1<=n;i++)
                          ^
0_0_37787727_5538.cpp:80:20: error: 'abb' was not declared in this scope
       if (abb(i1-i2)+abb(j1-j2)<=d) add(fn(i1,j1)+inf,fn(i2,j2),1e9),add(fn(i2,j2),fn(i1,j1)+inf,0); 
                    ^
0_0_37787727_5538.cpp:84:14: error: 'spfa' was not declared in this scope
   while(spfa())
              ^