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
n = int(input())

distinct = False

while distinct == False:

    n += 1

    detect = list()

    check = 0

    for i in str(n):

        if i not in detect:
            detect.append(i)

        elif i in detect:
            check = 1
            break

    if check != 1:

        print(n)
        break

    
            

    
    

        
    
        


    
    

    

    

    
    
