#include <stdio.h>

int main()
{
  int i, j, k, x, y, s, kakaku, maxkakaku;
  int before1, before2, before, after1, after2;
  
  while(1)
    {
      scanf("%d %d %d",&x,&y,&s);

      if(x==0)
	{
	  break;
	}
      k = 1;
      maxkakaku = 0;
      for(i=1;i<=s-1;i++)
	    {
	      before1 = (i*(100+x))/100;
	      for(j=i;j<=s-1;j++)
		{
		  before2 = (j*(100+x))/100;
		  before = before1 + before2;
		  if(before==s)
		    {
		      after1 = (i*(100+y))/100;
		      after2 = (j*(100+y))/100;
		      kakaku = after1 + after2;
		      if(maxkakaku<kakaku)
			{
			  maxkakaku = kakaku;
			}
		    }
		}
	    }
      printf("%d\n",maxkakaku);
    }       
  return 0;
}