Beautiful_Year_271_A.cpp

#include <bits/stdc++.h>
using namespace std;

int main()
{
    int year;
    cin >> year;

    while (true)
    {
        year++;
        int a = year / 1000;
        int b = year / 100 % 10;
        int c = year / 10 % 10;
        int d = year % 10;

        if (a != b && a != c && a != d && b != c && b != d && c != d)
            break;
    }

    cout << year;

    return 0;
}