View Compilation Error

0_0_36886241_17204.cpp:4:1: error: 'define' does not name a type
 define int long long
 ^
0_0_36886241_17204.cpp: In function 'int main()':
0_0_36886241_17204.cpp:24:23: error: 'f' was not declared in this scope
     int y01=f(x0,a,b,c);
                       ^