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())
N+=1
tog=1
while(tog==1):
    flag=1
    temp=N
    dic={}
    while(temp!=0):
        x=temp%10
        if x in dic:
            flag=0
            break
        else:
            dic[x]=1
        temp//=10
    if flag==1:
        print(N)
        tog=0
    else:
        tog=1
        N+=1
    
        
    
        
