#include <stdio.h>

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

		//p(100+x) / 100
		ans = 0;
		for(int i=1; i<s; i++){
			for(int j=1; j<s; j++){
				if(i*(100+x)/100 + j*(100+x)/100 ==  s){
					if((tmp = ((i*(100+y)/100 + j*(100+y)/100))) > ans){
						ans = tmp;
					}
				}
			}
		}
		printf("%d\n", ans);
	}//endwhile
	
	return 0;
}
