View Compilation Error

0_0_25912118_18500.cpp: In function 'int main()':
0_0_25912118_18500.cpp:40:35: error: invalid type argument of unary '*' (have 'LL {aka long long int}')
                 ans=(ans+*comb(m,i)%MOD*comb(k+m-1-i*n,m-1)%MOD)%MOD;
                                   ^