//#include <fstream>
#include <iostream>
#include <string>
using namespace std;
string s;
int i;
int main(void)
{
 //ifstream cin("problema1.in");
 while(getline(cin,s))
   {
   	string sol="";
   	if (s[0]==0 && s[3]==0 && s[5]==0) return 0;
   	for (i=0;i<s.size()-4;++i)
   	  {
   	   if (s[i]==s[s.size()-3]) sol+=s[s.size()-1];
   	           else sol+=s[i];
		 }
	 while(sol[0]=='0') sol.erase(sol.begin());
	 cout<<sol<<"\n";
   }	
 return 0;
}