My program is here:

var
   m,n,k:longint;
   min:longint;
function nums(a:longint):longint;
var
   i,tot:longint;
begin
     tot:=0;
     for i:=1 to trunc(sqrt(a)) do
     if a mod i=0 then inc(tot);
     nums:=tot;
end;
begin
     readln(m,n,k);
     for min:=1 to 10000 do
     begin
          if (nums(min)=n)and(nums(min-k)=m) then
          begin
               writeln(min);
               exit;
          end;
     end;
     writeln(0);
end.

min should be not less than k or ur program'll get crash because it
try to find square root of an negative integer :)

#include <stdio.h>
#include <math.h>
int i,m,n,k;
int num(int num)
{
  int i,tot=0;
  for (i=1; i<=(int)sqrt(num); ++i)
    if (num%i==0) ++tot;
  return tot;
}
int main()
{
  scanf("%d%d%d",&m,&n,&k);
  for (i=k; i<10000; ++i)
    if ((num(i)==n)&&(num(i-k)==m))
    {
      printf("%d",i);
      exit(0);
    }
  printf("%d",0);
  return 0;
}