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
s = int(input())
l = []
flag = 0
s += 1
while True:
    dummy = s
    while dummy != 0:
        l.append(dummy % 10)
        dummy //= 10
    l.sort()
    for i in range(len(l)-1):
        if l[i] == l[i+1]:
            flag = 1
            # print(i)
    if flag == False:
        break
    flag = 0
    s += 1
    l.clear()
print(s)
