#include<stdio.h>

int tax(int i, int x) {
	return i*(100 + x) / 100;
}

int main(void) {
	int x, y, s, max = 0,i,j;
	while (1) {
		max = 0;
		scanf("%d %d %d", &x, &y, &s);
		if (x == 0 && y == 0 && s == 0) break;
		for (i = 1; i < s; i++) {
			for (j = 1; j < s; j++) {
				if (tax(i, x) + tax(j, x) == s && max < tax(i, y) + tax(j, y)) {
					max = tax(i, y) + tax(j, y);
				}
			}
		}
		printf("%d\n", max);
	}
	return 0;
}