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
q = int(input())

def isdif(numb):
    flag = 0
    aux = [0]*10
    numb_aux = str(numb)

    for i in range(len(numb_aux)):
        aux[int(numb_aux[i])] += 1
    
    for k in range(0, 10):
        if aux[k] > 1:
            flag = 1
            break
    
    if flag == 0:
        return (1)
    else:
        return (-1)

while(42):
    q += 1
    if isdif(q) == 1:
        print(q)
        break
		      		 		 	  	    		 	