int main(){
	int x, y, s;
	int i, j, n, r1, r2, _i;
	while(scanf("%d%d%d", &x, &y, &s), s){
		r1 = x + 100;
		r2 = y + 100;
		n = 0;
		for(i = 1; i < s; i++){
			_i = i * r1 * 0.01;
			for(j = i; i + j <= s; j++){
				x = _i + (int)(j * r1 * 0.01);
				if(x == s){
					y = (int)(i * r2 * 0.01) + (int)(j * r2 * 0.01);
					if(n < y){
						n = y;
					}
				}
			}
		}
		printf("%d\n", n);
	}
	return 0;
}