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())
z=1
while(z==1):
    l=[]
    z=0
    n=n+1
    m=n
    while(m>0):
        c=m%10
        l.append(c)
        m=m//10
    l.sort()
    for i in range(len(l)-1):
        if(l[i]==l[i+1]):
            z=1
            break
                   
print(n)
            
