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())
numbers=[]
for i in range(10):
    numbers.append(str(i))
num={}
m=n+1

while True:
    flag=0
    for i in numbers:
        num[i] = 0
    l=list(str(m))
    for k in l:
        num[k] += 1
    for k in l:
        if num[k]>1:
            flag=1
            break
    if flag==0:
        print(m)
        break
    m=m+1