271A - Beautiful Year.cpp

#include "iostream"

using namespace std;

int main()
{
    int y;

    cin >> y;

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

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

    return 0;
}