#include<stdio.h>

int main()
{
  short rate_before,rate_after;
  int price_before,i,a,b,max;
  int n,m,p,q,r;

  while(1){
    max = 0;
    scanf("%hd %hd %d",&rate_before,&rate_after,&price_before);

    if(rate_before == 0 && rate_after == 0 && price_before == 0){
      break;
    }

    for(i = 1;i <= price_before/2;i++){
      n = i * (100+x) / 100;
      m = price_before - n;
      p = m * 100 / (100+x);

      while(1){
          p++;
          q = p * (100+x) / 100;
          if(n + q != price_before){
              p--;
              break;
          }
      }

     // if(n + r == price_before){
          a = i * (100+y) / 100;
          b = p * (100+y) / 100;
          if(a+b > max){
              max = a + b;
          }
      //}
    }

    printf("%d\n",max);
  }

  return 0;
}