#include <bits/stdc++.h>
using namespace std;

int main() {
	int x, y, s;
	while(cin >> x >> y >> s, x) {
		int ans = 0;
		for(int a = 1; a <= 1000; ++a) {
			for(int b = 1; b <= 1000; ++b) {
				double f = (double)a * (100 + x) / 100.0, g = (double)b * (100 + x) / 100.0;
				if((int)floor(f) + (int)floor(g) == s) {
					ans = max(ans, (int)floor(a * (100 + y) / 100.0) + (int)floor(b * (100 + y) / 100.0));
				}
			}
		}
		cout << ans << endl;
	}
}
