View Compilation Error

0_0_29849443_3652.cpp: In function 'int Calc(int, __int128, __int128)':
0_0_29849443_3652.cpp:75:39: error: 'P' was not declared in this scope
             res=Add(res,Mul((R/d-L/d)%P,phi[d]));
                                       ^
0_0_29849443_3652.cpp:75:47: error: 'Mul' was not declared in this scope
             res=Add(res,Mul((R/d-L/d)%P,phi[d]));
                                               ^
0_0_29849443_3652.cpp:75:48: error: 'Add' was not declared in this scope
             res=Add(res,Mul((R/d-L/d)%P,phi[d]));
                                                ^