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())

k = n+1



m = k%10
l = int(k/10)%10
j = int((k/10)/10)%10
o = int(((k/10)/10)/10)%10

while m==l or m==j or m==o or l==j or l==o or j==o:
    k = k+1
    m = k % 10
    l = int(k / 10) % 10
    j = int((k / 10) / 10) % 10
    o = int(((k / 10) / 10) / 10) % 10


print(k)