#include<bits/stdc++.h>
using namespace std;
int main(){
    string s[10]={"000","001","010","011","100","101","110","111"};
    string s1,s2;
    cin>>s1;
    for(int i=0;i<s1.size();i++){
    	s2=s2+s[s1[i]-'0'];
	}
	while(s[2]=='0'){
		s2=s2.erase(0,1);
	}
	if(s2==""){
		cout<<0;
	}else{
		cout<<s2;
	}
    return 0;
}


/**************************************************************
	Problem: 1359
	User: linyuhang
	Language: C++
	Result: Compile Error
****************************************************************/