#include <stdio.h>

int main(void){

  int x,y,s,f,i,j,a,b;

  for(;;){
    
    scanf("%d %d %d",&x,&y,&s);
    if(x==0&&y==0&&s==0)break;
    int max=0;
    for(i=1;i<=s/2;i++){
      for(j=i;j<=s;j++){
        a=i*(100+x)/100;
        b=j*(100+x)/100;
        f = i*(100+y)/100 + j*(100+y)/100;
        if(a+b==s&&max<f)
          max=f;
      }
    }

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

  }

  return 0;
}