#include<stdio.h>

int main(){
    int x,y,s;
    int p;
    int i,j;
    int before,after;
    int max=0;
    
    for(;scanf("%d %d %d", &x, &y, &s),x==y;){
        p = 100*s/(100+x);
        
        for(i=1;i<p;i++){
            before = (p-i)*x/100+i*x/100;
            if(before==s){
                after = (p-i)*y/100+i*y/100;
                if(after>max)
                    max=after;
            }
        }
        printf("%d\n",max);
    }
    
    return 0;
}