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
x=int(input())
a=x+1
while True:
    br=a%10
    bd=a//10
    cr=bd%10
    cd=bd//10
    dr=cd%10
    dd=cd//10
    er=dd%10
    ed=dd//10
    if(br != cr and br!= dr and br!= er and cr!= dr and cr!= er and dr!= er):
        print(a)
        break
    a+=1