View Compilation Error

0_0_33343923_11861.cpp: In function 'int main()':
0_0_33343923_11861.cpp:59:45: error: invalid operands of types 'long long int(int)' and 'int' to binary 'operator*'
  for(int i=1;i<30000;++i) fac[i] = fac[i-1]*i%mod;
                                             ^
0_0_33343923_11861.cpp:92:25: error: invalid operands of types 'long long int' and 'long long int(int)' to binary 'operator*'
    ans = ans*fac[in[i]-1]%mod;
                         ^
0_0_33343923_11861.cpp:95:30: error: invalid conversion from 'long long int (*)(int)' to 'long long int' [-fpermissive]
     ans = ans*inv(fac[D[i][j]], mod)%mod;
                              ^
0_0_33343923_11861.cpp:12:4: note: initializing argument 1 of 'long long int inv(long long int, long long int)'
 ll inv(ll a, ll m){
    ^