#include <stdio.h>

int taxfree(int r, int p) {
  int i;
  for(i=p;i>0;i--) if(i*(100+r)/100 == p) break;
  return i;
}

int solve(int x, int y, int s){
  int a,b,da,db,i,max=0;
  for(a=1;a<s;a++){
    b=s-a;
    da = taxfree(x,a)*(100+y)/100;
    db = taxfree(x,b)*(100+y)/100;
    if(da+db > max) max=da+db;
  }
  return max;
}

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

    printf("%d\n", solve(x,y,s));
    /* printf("%d\n", taxfree(x,s)); */
  }
  
  return 0;
}