View Compilation Error

0_0_35531571_26146.cpp: In function 'int solve(int)':
0_0_35531571_26146.cpp:26:5: error: expected ';' before 'int'
     int pos=0;
     ^
0_0_35531571_26146.cpp:29:11: error: 'pos' was not declared in this scope
         a[pos++]=x%10;
           ^
0_0_35531571_26146.cpp:32:16: error: 'pos' was not declared in this scope
     return dfs(pos-1,0,true);
                ^