#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n) ; ++i)
using namespace std;
typedef long long ll;

int main () {
	string s;
  	cin >> s;
	int n = s.size();
	rep(i,n){
		if(s[i]=='0') s[i]='1';
		else s[i]='0';
	}
	cout << s;
	return 0;
}