#include <stdio.h>

int zei(int nuki,int ritu) {
	return nuki*(100+ritu)/100;
}

int main(void) {
	int x,y,s;
	while(scanf("%d%d%d",&x,&y,&s)==3 && (x|y|s)!=0) {
		int answer=0;
		int p1,p2;
		for(p1=1;p1<s;p1++) {
			for(p2=1;p2<s;p2++) {
				if(zei(p1,x)+zei(p2,x)==s) {
					int np=zei(p1,y)+zei(p2,y);
					if(np>answer)answer=np;
				}
			}
		}
		printf("%d\n",answer);
	}
	return 0;
}