271A - Beautiful Year.cpp

#include<iostream>

using namespace std;

int main()
{
    int n;
    cin>>n;
     while(true)
     {
        n+=1;
        int a=n/1000;
        int b=(n/100)%10;
        int c=(n/10)%10;
        int d=n%10;

        if(a!=b && a!=c && a!=d && b!=c && b!=d && c!=d)
        {
         break;
        }
     }
    cout<<n<<endl;

    return 0;
}