#include <iostream>
#include <algorithm>
using namespace std;

int calc(int n, int x) {
    return n * (100 + x) / 100;
}

int main() {
    int x, y ,s;
    while (cin >> x >> y >> s, x) {
	int ans =0;
	for (int a = 1; a <= s; a++) {
	    for (int b = 1; b <= s; b++) {
		if (calc(a, x) + calc(b, x) != s) continue;
		ans = max(ans, calc(a, y) + calc(b, y));
	    }
	}
	cout << ans << endl;
    }
    return 0;
}

