#include <stdio.h>

int main(void){
	int x, y, s; 
	int a, b;
	int max;

	while(scanf("%d %d %d", &x, &y, &s) == 3){
		if(x == 0 && y == 0 && s == 0){
			break;
		}
	for(a = 1; a < s; a++){
		for(b = 1; b < s; b++){
			if((int)(a * x / 100.0 + a) + (int)(b * x / 100.0 + b) == s){
				if((int)(a * y / 100.0 + a) + (int)(b * y / 100.0 + b) > max){
					max = (int)(a * y / 100.0 + a) + (int)(b * y / 100.0 + b);
				}

			}
		}
	}
	printf("%d\n", max);
	max = 0;
	}
    return 0;
}
