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
p=int(input())
m=1
l=p+1
while m!=0:
    l1=l%10
    l2=(l//10)%10
    l3=(l//100)%10
    l4=(l//1000)%10
    #print (l1,l2,l3,l4) 
    if l1==l2 or l1==l3 or l1==l4 or l2==l3 or l2==l4 or l3==l4:
        l=l+1
    else:
        m=0
print (l)