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);
		}
	}
}
 

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NSA4IDEwNQo4IDUgMTA1CjEgMiAyNAo5OSA5OCAyNAoxMiAxMyAyNgoxIDIyIDIzCjEgMTMgMjAxCjEzIDE2IDExMgoyIDI0IDUwCjEgODIgNjEKMSA4NCAxMjUKMSA5OSA5OTkKOTkgMSA5OTkKOTggOTkgOTk5CjEgOTkgMTEKOTkgMSAxMgowIDAgMA==

5 8 105
8 5 105
1 2 24
99 98 24
12 13 26
1 22 23
1 13 201
13 16 112
2 24 50
1 82 61
1 84 125
1 99 999
99 1 999
98 99 999
1 99 11
99 1 12
0 0 0