// AOJ 1192: Tax Rate Changed
// 2017.9.14 bal4u@uu
// 2017.12.22

#include <stdio.h>
 
 char buf[15], *p;
 
 int in()
{
	int n = 0;
	while (*p >= '0') n = (n<<3) + (n<<1) + (*p++ & 0xf);
	p++;
	return n;
}

int main()
{
    int x, y, s, p1, p2, t, ans;
 
    while (fgets(p=buf, 15, stdin) && *p != '0') {
		x = in(), y = in(), s = in();
		ans = 0;
        for (p1 = 1; p1 < s; p1++) for (p2 = p1; p2 < s; p2++) {
			t = p1 + p2 + (p1*x)/100 + (p2*x)/100;
			if (t > s) break;
			if (t != s) continue;
            t = p1 + p2 + (p1*y)/100 + (p2*y)/100;
			if (t > ans) ans = t;
        }
        printf("%d\n", ans);
    }
    return 0;
}