View Compilation Error

0_0_38337045_1516.cpp:7:7: error: 'll' does not name a type
 const ll MOD = 123456789;
       ^
0_0_38337045_1516.cpp: In member function 'node node::operator*(node) const':
0_0_38337045_1516.cpp:29:49: error: 'MOD' was not declared in this scope
      res.a[i][j]+=(1ll * fi.a[i][k]*se.a[k][j])%MOD;
                                                 ^