#include<stdio.h>

int max(int a,int b){if(a>b){return a;}return b;}

int tax(int x,int p){
  return (x*(100+p))/100;
}

int main(){
  int x,y,s,i,j,r,w;
  while(scanf("%d%d%d",&x,&y,&s),s!=0){
    r=0;
    i=1;j=s-1;
    while(i<=j){
      w=tax(i,x)+tax(j,x);
      if(w==s){r=max(tax(i,y)+tax(j,y),r);}
      if(w<=s){i++;}
      else{j--;}
    }
    printf("%d\n",r);
  }
}

