/* *FIXME* BAD ALGORITHM */

#include <stdio.h>

int max(int a, int b)
{
    return a > b ? a : b;
}

int sum(int a, int b, int rate)
{
    return (int)(a * (100 + rate) / 100) + (int)(b * (100 + rate) / 100);
}

int main(void)
{
    int x, y, s, res, a, b;

    while(scanf("%d%d%d", &x, &y, &s), x + y + s)
    {
        res = 0;
        for(a = 1; a < s; a++)
            for(b = 1; b < s; b++)
                if(sum(a, b, x) == s)
                    res = max(res, sum(a, b, y));

        printf("%d\n", res);
    }

    return 0;
}