View Compilation Error

0_0_21290351_3091.cpp: In function 'int main()':
0_0_21290351_3091.cpp:19:9: error: expected ';' before 'long'
         long tmp=0,mid=0;
         ^
0_0_21290351_3091.cpp:21:17: error: 'tmp' was not declared in this scope
                 tmp+=a[i];
                 ^
0_0_21290351_3091.cpp:25:29: error: 'mid' was not declared in this scope
                     start = mid;
                             ^
0_0_21290351_3091.cpp:30:21: error: 'mid' was not declared in this scope
                     mid = i+1;
                     ^