View Compilation Error

0_0_18140291_18370.cpp: In function 'int main()':
0_0_18140291_18370.cpp:26:25: error: 'total' was not declared in this scope
                         total+=m[i]*a[i];
                         ^
0_0_18140291_18370.cpp:27:20: error: 'total' was not declared in this scope
                 if(total%2==1){
                    ^
0_0_18140291_18370.cpp:31:17: error: 'total' was not declared in this scope
                 total/=2;
                 ^