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
x=int(input())
y=x+1
c=1
while(c!=0):
    c=0
    r=str(y)
    r=list(r)
    
    for i in range(0,len(r)):
        for j in range(i+1,len(r)):
            if(r[i]==r[j]):
                c+=1

    y=y+1
print(y-1)