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
year=int(input())
status=0
while status!=1:
    year+=1
    number=str(year)
    d={}
    for i in range(0,len(number)):
        if number[i] in d:
            d[number[i]]+=1
        else:
            d[number[i]]=1
    count=0
    for key in d:
        if d[key]==1:
            count+=1
    
    if count==len(number):
        status=1

print(year)