// Aizu 1192: Tax Rate Changed
// 2017.9.14 bal4u@uu
#include <stdio.h>

int main()
{
	int x, y, s, p1, p2, t, ans;

	while (scanf("%d%d%d", &x, &y, &s) && x) {
		for (ans = 0, p1 = 1; p1 < s; p1++) for (p2 = p1; p2 < s; p2++) {
			if ((p1*(100+x))/100 + (p2*(100+x))/100 != s) continue;
			if ((t = (p1*(100+y))/100 + (p2*(100+y))/100) > ans) ans = t;
		}
		printf("%d\n", ans);
	}
	return 0;
}