#include"bits/stdc++.h" using namespace std; int main(){ int n,a,b,c,d; cin>>n; while(n++){ a=n%10; b=n/10%10; c=n/100%10; d=n/1000; if(a!=b&&a!=c&&a!=d&&b!=c&&b!=d&&c!=d){ cout<<n; return 0;}} }