#include<stdio.h>

int main(){
    int x,y,s;
    int i,j;
    int before,after;
    int max;
    
    for(;scanf("%d %d %d", &x, &y, &s),x;){
        max=0;

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