View Compilation Error

0_0_29970314_17446.cpp: In function 'int main()':
0_0_29970314_17446.cpp:157:35: error: too few arguments to function 'long long int inv(long long int, long long int, long long int)'
             ans = mul(ans,inv(i, p),p);
                                   ^
0_0_29970314_17446.cpp:116:11: note: declared here
 long long inv (long long a, long long b, long long m) {
           ^