#include<stdio.h>

int main(void){
  int x; int y; int s;
  int sum1,sum2;
  int max_price;

  while(1){
    scanf("%d %d %d",&x,&y,&s);
    if(x==0 && y==0 && s==0) break;

    sum1=0; sum2=0;
    max_price=0;
    for(int i=1;i<s;i++){
      for(int j=1;j<s;j++){
        sum1=i*(100+x)/100+j*(100+x)/100;

        if(sum1==s){
          sum2=i*(100+y)/100+j*(100+y)/100;
          if(max_price<sum2) max_price=sum2;
        }

      }
    }
    printf("%d\n",max_price);
  }
  return 0;
}

