View Compilation Error

0_0_24090032_17073.cpp: In function 'int main()':
0_0_24090032_17073.cpp:14:3: error: 'll' was not declared in this scope
   ll a=3*pow(2,day-1)-2;
   ^
0_0_24090032_17073.cpp:15:17: error: 'a' was not declared in this scope
   printf("%d\n",a);
                 ^