#include <stdio.h>

int main(void) {
    int i, max, j, x, y, n;
    int a1, b1, a2, b2;
    scanf("%d%d%d",&x, &y, &n);
    while(n) {
        max = 0;
        for(i = 1; i < n; i++ ) {
            a1 = i * (100 + x) / 100;
            a2 = i * (100 + y) / 100;
            for(j = 1; j < n; j++ ) {
                b1 = j * (100 + x) / 100;
                b2 = j * (100 + y) / 100;
                if(a1 + b1 == n) {
                    if(max < a2 + b2) {
                        max = a2 + b2;
                    }
                }
            }
        }
        printf("%d\n",max);
        scanf("%d%d%d",&x ,&y, &n);
    }
    return 0;
}