#include <bits/stdc++.h>
using namespace std;

#define repl(i,a,b) for(int i=(int)(a);i<(int)(b);i++)
#define rep(i,n) repl(i,0,n)

int main(){

  while(1){
    int x,y,s;
    cin>>x>>y>>s;
    if(x==0)break;
    int res=0;
    repl(a,1,s)repl(b,1,s){
      int prea=(100+x)*a/100;
      int preb=(100+x)*b/100;
      if(prea+preb==s)res=max(res,((100+y)*a/100)+((100+y)*b/100));
    }
    cout<<res<<endl;
  }

  return 0;
}

