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
# cook your dish here
x = int(input())

isdone = False
y = x+1
while isdone==False:
    lst=[]
    isbreak=False
    for item in str(y):
        
        if len(lst)==0:
            lst.append(item)
        elif item in lst:
            isbreak=True
            break
        else: lst.append(item)
    if isbreak==False : isdone = True
        
    y+=1
print(y-1)
        