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
y=int(input())
x1,x2=y+1,y+1
while 1>0:
    s=len(str(x1))
    L=[]
    for i in range(s):
        a=int(x1%10)
        x1=int(x1//10)
        L.append(a)
    set1=set([])
    for j in range(s):
        set1.add(int(L[j]))
    s1=len(set1)
    if s1==s:
        print(x2)
        break
    else:
        x2+=1
        x1=x2
        
    

    
        
        
    
    
