/*
  AOJ 1192
  Title:Tax Rate Changed
  @kankichi573
*/
#include <stdio.h>
int x,y,s;
main()
{
  int a,b,max_,new,s1;
  int a_,b_;
  while(scanf("%d %d %d",&x,&y,&s)  && (x||y||s))
    {
      for(a=1,max_=0;a<=s;a++)
	{
	  b=s*100/(100+x)-a;
	  if(b<=0)
	    continue;
	  while((s1=(100+x)*a/100+(100+x)*b/100) < s)
	    b++;
	  if(s1==s)
	    {
	      new=(100+y)*a/100+(100+y)*b/100;
	      if(max_<new)
		{
		  max_=new;
		  a_=a;
		  b_=b;
		}
	    }
	}
      printf("%d\n",max_);
      //printf("%d (%d %d)\n",max_,a_,b_);
    }
  return(0);
}