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
#http://codeforces.com/problemset/problem/271/A

def beauty(n): #beautiful yet?
    l = []
    while n > 0:
        #print (n%10, l)
        if not n%10 in l:
            l.append(n%10)
        else:
            return False #yurnotbootiful
        n=int(n/10)
    return True
year  = input()
year= int(year)

newyear = year+1

while not (beauty(newyear)):
    newyear+=1
print (newyear)
