#include<stdio.h>

int tax (int,int);

int main (void)
{
	int s[1000];
	int x[1000],y[1000];

	int i,j,p,q;

	for(i=0;;i++){
		scanf("%d %d %d",&x[i],&y[i],&s[i]);
		if(x[i]==0&&y[i]==0&&s[i]==0) break;
	}

	for(j=0;j<i;j++){
		int max=0;
		for(p=1;p<=s[j];p++){
			for(q=1;q<=s[j]-p;q++){
				if(tax(x[j],p)+tax(x[j],q)==s[j]){
					if(tax(y[j],p)+tax(y[j],q)>max) max=tax(y[j],p)+tax(y[j],q);
				}
			}
		}

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

	return 0;
}

int tax (int taxrate, int cost)/*?¨?????????????*/
{
	int price;/*?¨?????????????*/
	
	price=cost*(100+taxrate)/100;
	return price;
}