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
an=input()

i = int(an)
i+=1
an=str(i)
dif=False
while dif == False:
    
 
    if (an[0] != an[1] and an[0] != an[2] and an[0]!=an[3]):

        if (an[1] != an[0] and an[1] != an[2] and an[1]!=an[3]):
         
            if (an[2] != an[1] and an[2] != an[0] and an[2]!=an[3]):
             
                if (an[3] != an[1] and an[3] != an[2] and an[3]!=an[0]):
                
                    print(i)
                    exit(0)
                
             
         
      
    i+=1
    an=str(i)
 
