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
start_year = input()
start_year = int(start_year)

for year in range(start_year + 1, 9013):
    y0 = year%10
    y1 = (year%100 - y0)//10
    y2 = (year%1000 - y1)//100
    y3 = (year%10000 - y2)//1000
    if y0 != y1 and y0 != y2 and y0 != y3 and y1 != y2 and y1 != y3 and y2 != y3:
        print(year)
        break

		  	  	 	 		 	   			   	 			 	