View Compilation Error

0_0_33683589_7131.cpp: In function 'int main()':
0_0_33683589_7131.cpp:37:40: error: invalid operands of types 'long long int' and '<unresolved overloaded function type>' to binary 'operator<<'
   cout<<(3ll*pre[n]*qpow(n,mod-2)%mod<<endl;
                                        ^
0_0_33683589_7131.cpp:37:44: error: expected ')' before ';' token
   cout<<(3ll*pre[n]*qpow(n,mod-2)%mod<<endl;
                                            ^