It seems like the year of 2013 came only yesterday. Do you know a curious fact? The year of 2013 is the first year after the old 1987 with only distinct digits.

Now you are suggested to solve the following problem: given a year number, find the minimum year number which is strictly larger than the given one and has only distinct digits.

Input

The single line contains integer y (1000 ≤ y ≤ 9000) — the year number.

Output

Print a single integer — the minimum year number that is strictly larger than y and all it's digits are distinct. It is guaranteed that the answer exists.

Examples

Input

1987


Output

2013


Input

2013


Output

2014
import java.util.Scanner;

public class A {

    public static void main(String args[]) {
    A a = new A();
    a.run();
    }

    public void run() {
    Scanner scanner = new Scanner(System.in);
    int inputYear = scanner.nextInt();

    for (int i = inputYear + 1; ; i++) {
        int firstNumber = i / 1000;
        int secondNumber = (i % 1000) / 100;
        int thirdNumber = (i % 100) / 10;
        int fourthNumber = i % 10;

        if (isUnique(firstNumber, secondNumber, thirdNumber, fourthNumber)) {
        System.out.println(i);
        break;
        }
    }
    }
    
    private boolean isUnique(int first, int second, int third, int fourth) {
    if (first != second && first != third && first != fourth) {
        if (second != third && second != fourth) {
        if (third != fourth)
            return true;
        }
    }
    return false;
    }

}