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
saver = int(input())
flag = 1
while(flag):
    num = saver + 1
    visited = [0,0,0,0,0,0,0,0,0,0]
    while (num): 
        if (visited[int(num % 10)]):
            break
        visited[int(num % 10)] = 1 
        num = int(num/10)
    if (num == 0):
        flag = 0
    else:
        saver += 1
print(saver+1)
