View Compilation Error

0_0_34868260_21142.cpp:38:13: error: stray '\23' in program
             : (n   n / I * k)&(n - 1)] * a[j + k + I / 2] % MOD;
             ^
0_0_34868260_21142.cpp: In member function 'void NTT<SZ>::DFT(IVec&, int)':
0_0_34868260_21142.cpp:37:37: error: 'I' was not declared in this scope
             t = (LL)w[op == 1 ? n / I * k 
                                     ^
0_0_34868260_21142.cpp:38:21: error: expected ')' before 'n'
             : (n   n / I * k)&(n - 1)] * a[j + k + I / 2] % MOD;
                     ^
0_0_34868260_21142.cpp:38:65: error: expected ']' before ';' token
             : (n   n / I * k)&(n - 1)] * a[j + k + I / 2] % MOD;
                                                                 ^