#include <stdio.h>

int main(){
	int tax_before, tax_after;
	int price_before, price_after;
	int cost_A, cost_B;
	int max_price;
	int i;

	while(1){
		scanf("%d %d %d", &tax_before, &tax_after, &price_before);
		if(tax_before==0&&tax_after==0&&price_before==0) break;

		i = 1;
		max_price = 0;
		while(1){
			cost_A = i*(100+tax_before)/100;
			if(cost_A*2>price_before) break;
			cost_B = (price_before-cost_A)*100/(100+tax_before);
			while((cost_B+1)*(100+tax_before)/100<=price_before-cost_A) cost_B++;
			if(cost_A+cost_B*(100+tax_before)/100!=price_before){
				i++;
				continue;
			}
			cost_A = i*(100+tax_after)/100;
			cost_B = cost_B*(100+tax_after)/100;
			price_after = cost_A + cost_B;
			if(max_price < price_after) max_price = price_after;
			i++;
		}

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

	return 0;
}