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
n = int(input())
while 1:
    a = []
    for i in range (0,10):
        a.append(0);
    n+=1
    temp=n
    while temp>0:
        r=temp%10
        a[r]+=1
        temp=temp//10
    f=True
    for i in range(0,10):
        if a[i]>1:
            f=False
    if f==True:
        break;
print(n)
