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
i = int(input())
y=list()
x=list()
f=1
while y!=x or f==1:
    f=0
    i+=1
    a = str(i)
    x = list()
    y=list()
    for j in range(0,len(a)):
        x.append(a[j])
    y = sorted(set(x))
    x = sorted(x)
    if y==x:
        print(i)
        break
