View Compilation Error

0_0_29850127_7450.cpp: In function 'void solve(int, ll)':
0_0_29850127_7450.cpp:99:66: error: 'Sum2' was not declared in this scope
                 res1=Add(res1,Mul(phi[T],Add(Add(Mul(3*T,Sum2(r/T)),Mul(3,Sum1(r/T))),r/T)));
                                                                  ^
0_0_29850127_7450.cpp:99:83: error: 'Sum1' was not declared in this scope
                 res1=Add(res1,Mul(phi[T],Add(Add(Mul(3*T,Sum2(r/T)),Mul(3,Sum1(r/T))),r/T)));
                                                                                   ^