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())
a=n
flag=1
while flag:
    a=a+1
    y=a%10
    d=a//10%10
    z=a//100%10
    x=a//1000
    if x==z or d==y or x==y or x==d or d==z or y==z:
        flag=1
    else :
        flag=0
print(a)
