View Compilation Error

0_0_31618577_24013.cpp: In function 'int main()':
0_0_31618577_24013.cpp:79:35: error: 'j' was not declared in this scope
             F[i]=C(i,k-n+i)*tmp(m/j,n-num[j])*tmp(m/j-1,k-n+num[j]);
                                   ^