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())
def intToList(a):
    num1=[]
    while a>=1:
        b=a%10
        a=int(a/10)
        num1.append(b)
    return num1
for i in range(1,150):
    m=n+i
    num2=intToList(m)
    a=len(num2)
    b=len(set(num2))
    if a==b:
        z=m
        break
    else:
        continue
print(z)