#include <iostream>
#include <algorithm>
 using namespace std;
 int X, Y, S;
 
 int tax(int A, int a) {
	 return  a * (100 + A)/100;
 }
 
 int solve() {
	 int maximum = 0;
	 for (int i = 1; i < S; ++i) {
	   for (int j = i; j < S; ++j) {
	    if (tax(X, i) + tax(X, j) == S) {
		 maximum = max(maximum, tax(Y, i) + tax(Y, j));
	    }
       }
     }
	 return maximum;
 } 
 int main() { 
	 while (cin >> X >> Y >> S && X>0) {
		 cout << solve() << endl; 
		 }
	 
	 }

