#include<stdio.h>

int shouhi(int n,int m){
	return n*(100+m)/100;
}

int main(){
	int X,Y,s,a,b,i,A=0,B=0;
	for(i=0;i<1000;i++){
		scanf("%d %d %d",&X,&Y,&s);
		A=0;B=0;
		if((X==0)&&(Y==0)&&(s==0)){
			return 0;}
		for(a=1;a<1000;a++){
			for(b=a+1;b<1000;b++){
				if((shouhi(a,X) + shouhi(b,X) == s) && (shouhi(a,Y) + shouhi(b,Y) >= shouhi(A,Y) + shouhi(B,Y))){
					A = a; B = b;
				}
			}
		}
		printf("%d\n",shouhi(A,Y) + shouhi(B,Y));
	}
					
	return 0;
	}