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
cy = input()
cy = str(int(cy)+1)
while cy[0] == cy[1] or cy[0] == cy[2] or cy[0] == cy[3] or cy[1] == cy[2] or cy[1] == cy[3] or cy[2] == cy[3] :
    if cy[0] == cy[3] or cy[1] == cy[3] or cy[2] == cy[3] :
        cy = str(int(cy)+1)
    if cy[0] == cy[2] or cy[1] == cy[2] :
        m = int(cy[3])
        cy = str(int(cy)+10-m)
    if cy[0] == cy[1] :
        m = int(cy[2])*10 +int(cy[3])
        cy = str(int(cy)+100-m)
print (cy)