import java.util.*;
public class Main {
	public static void main(String[] args) {
		final Scanner sc = new Scanner(System.in);
		while(sc.hasNext()) {
			final int x = sc.nextInt();
			final int y = sc.nextInt();
			final int s = sc.nextInt();
			if(x == 0 && y == 0 && s == 0)
				return;
			int max = 0;
			for(int i = 1; i < s; i++)
				for(int j = 1; j < s; j++) {
					final int v = i * (100 + x) / 100 + j * (100 + x) / 100;
					if(v == s)
						max = Math.max(max, i * (100 + y) / 100 + j * (100 + y) / 100);
				}
			System.out.println(max);
		}
	}
}