View Compilation Error

0_0_36607048_7487.cpp:50:60: error: expected '}' at end of input
         for (int i = 0; i < n; ++i)a[i] = (ll)a[i]*b[i]%mod;//
                                                            ^
0_0_36607048_7487.cpp: In member function 'void NTT::Calculate()':
0_0_36607048_7487.cpp:50:60: error: expected '}' at end of input
0_0_36607048_7487.cpp: At global scope:
0_0_36607048_7487.cpp:50:60: error: expected unqualified-id at end of input