View Compilation Error

0_0_33590098_1290.cpp: In function 'int main()':
0_0_33590098_1290.cpp:26:18: error: 'end_a' was not declared in this scope
   if(flag_a!=-1) end_a=Last(a,len_a);
                  ^
0_0_33590098_1290.cpp:27:8: error: 'end_a' was not declared in this scope
   else end_a=len_a-1;
        ^
0_0_33590098_1290.cpp:28:18: error: 'end_b' was not declared in this scope
   if(flag_b!=-1) end_b=Last(b,len_b);
                  ^
0_0_33590098_1290.cpp:29:8: error: 'end_b' was not declared in this scope
   else end_b=len_b-1;
        ^
0_0_33590098_1290.cpp:30:6: error: 'end_a' was not declared in this scope
   if(end_a!=end_b)
      ^
0_0_33590098_1290.cpp:30:13: error: 'end_b' was not declared in this scope
   if(end_a!=end_b)
             ^