//No.272 NOT回路
#pragma GCC optimize("O3")
#pragma GCC target("avx")
#include <bits/stdc++.h>
#define rep(i ,n) for(int i=0;i<(int)(n);++i)

using namespace std;

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