What are the values of M and N??

Consider the source code below, where M and N are constants declared with #define int mat1[MI[N]; int mat2[N]IM]; int sum_element(int i, int j) | return mat1[iljlmat2[i; Suppose the above code generates the following assembly code: sum_element: pushl %ebp movl %esp , %ebp mov 8(%ebp),%eax mov! 12(%ebp),%ecx sa11 $2,%ecx leal 0C,%eax, 8) , Xedx // %edx 8i subl %eax , %edx leal (%eax , %eax , 4) , %eax // %eax_5i movl mat2(Xecx , %eax,4),%eax // %eax= // load i to %eax // load j to %ecx //Xecx = 4.. 20i + 4 addl mat1(Xecx , XedX,4),%eax // %eax 281 + = 4 mov popl ret %ebp,%esp %ebp