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
T = int(raw_input())
flag = 1
count = 1
while flag:
    temp = T + count
    count += 1
    temp = str(temp)
    temp = list(temp)
    if temp[0]!=temp[1] and temp[0]!=temp[2] and temp[0]!=temp[3]:
        if temp[1]!=temp[2] and temp[1]!=temp[3] and temp[2]!=temp[3]:
            flag = 0

print T + count - 1
