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
g= 10000
t=int(input())
for i in range(t+1,int(g)):
    d={}
    n=i
    while i>0:
        r=i%10
        if i in d:
            d[r]+=1
        else:
            d[r]=1
        i=i//10
    count=0
    for i in d:
        if d[i]>1:
            continue
        else:
            count+=1
    #print(d,count)
    if count==4:
        print(n)
        break
 
        
