View Compilation Error

0_0_29629522_29079.cpp: In function 'int main()':
0_0_29629522_29079.cpp:31:12: error: 'al' was not declared in this scope
         if(al==ar){ans=maxx; ansl=maxp; ansr=maxp+1;}
            ^
0_0_29629522_29079.cpp:31:16: error: 'ar' was not declared in this scope
         if(al==ar){ans=maxx; ansl=maxp; ansr=maxp+1;}
                ^