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
n = int(input())
while(1):
    n+=1
    m = str(n)
    a = m.count("0")
    b = m.count("1")
    c = m.count("2")
    d = m.count("3")    
    e = m.count("4")    
    f = m.count("5")
    g = m.count("6")
    h = m.count("7")
    i = m.count("8")
    j = m.count("9")
    if max(a,b,c,d,e,f,g,h,i,j) < 2:
        print(n)
        break
