#include <stdio.h>

int main(void){
    int x,y,s,i,j,max,bef,aft;
    for(;;){
        scanf("%d %d %d", &x, &y, &s);
        if(x==0 && y==0 && s==0) break;
        max=0; //?????????
        for(i=1;i<s;i++){ //??????????????????1~s-1?????§????????????
            for(j=1;j<s;j++){
                bef = i*(100+x)/100 + j*(100+x)/100;
                if(bef==s){ //????????????x%?¨??????????????¨????s?????¨???
                    aft = i*(100+y)/100 + j*(100+y)/100; //y%?¨??????????????¨????
                    if(max<aft) max = aft; //?????§?????´??°
                }
            }
        }
        printf("%d\n", max);
    }
    return 0;
}