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
yearNumber = int(input())
yearNumber = yearNumber+1
while True:
    a = list(str(yearNumber))
    if (a[0] != a[1]) and (a[0] != a[2]) and (a[0] != a[3]) and (a[1] != a[2]) and (a[1] != a[3]) and (a[2] != a[3]):
        break
    else:
        yearNumber = yearNumber+1
print(yearNumber)

 	 	 		 		  					  		 	  	  	