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
y=int(input())

def dist(x):
    x1=x%10
    x=int(x/10)
    x2=x%10
    x=int(x/10)
    x3=x%10
    x=int(x/10)
    x4=x%10
    x=int(x/10)
    if x1!=x2 and x2!=x3 and x3!=x4 and x4!=x1 and x2!=x4 and x1!=x3:
        return True
    else :
        return False
while(True):
    y+=1
    if dist(y):
        print(y)
        break
