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())
t=True
while(t):
    n=n+1
    a=n%10;
    b=(int(n/10))%10;
    c=(int(n/100))%10;
    d=(int(n/1000))%10;
    if (a!=b) and (a!=c) and (a!=d) and (b!=c) and (b!=d) and(c!=d):
        t=False
    
print(n)