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
m=int(input())
while(1):
    m+=1
    n=str(m)
    l=len(n)
    flag=1
    for i in range (l):
        for j in range(i+1,l):
            if(n[i]==n[j]):
                flag=0
    if(flag==1):
        break
print(m)
