a.cpp

#include<iostream>
#include<sstream>
#include<string>
#include<cmath>
#include<cstdio>
#include<vector>
#include<map>
#include<set>
#include<queue>
#include<deque>
#include<algorithm>
#include<functional>
#include<numeric>
#define rep(i,b) for(int i = 0 ;i < b ; i++)
using namespace std;

int main(){
  //int max = 0;
  //int n;
  while(1){
  	int x,y,s;

  	cin >> x >> y >> s;
  	if(x==0&&y==0&&s==0){break;}

  	int result=0;
  	//5%の税込み価格リスト
  	int dict[2001];
  	for(int i=0;i<(2000+1);i++){dict[i]=-1;}

  	dict[1] = 1;
  	dict[0] = 0;
  	
  	for(int i=2;i<(1000);i++){
  		float a=i*(100+x)/100;
  		int b=int(a);
  		//cout << b << endl;
  		 dict[b]=i;
  	}
  	//入ってないところ埋める
  	/*
  	for(int i=1;i<(s*s+1);i++){
  		if(dict[i]==-1){dict[i]=dict[i-1];
  			//if(i<s*5){cout << i << endl;}
  		}
  	}*/


  	for(int i=1;i<(s/2+1);i++){

  		float a=float(i);//商品1
  		float b=float(s)-a;//商品2
  		//int a=i;int b=s-a;
  		//cout << "a="<<a<< " b=" << b << " ";
  		//if(dict[i]==-1||dict[s-1]==-1){continue;}
  		a = dict[i];
		//cout << "dicta=" << a <<" ";
  		 a *= (100+y);
  		 a/=100;
  		 //cout << a << " ";

  		 //b
  		 b=dict[s-i];
  		//cout << "dictb=" << b <<" ";
  		 b= b*(100+y);
  		 b/=100;

  		  //cout << b << " " ;

  		 int c=int(a)+int(b); 
  		// cout << c << endl;

  		result = max(result,c);

  	}


  	cout << result << endl;
}
    //cout << max << endl;  
}