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
#271A

y = str(input())
y_int = int(y)

dist = 0

while dist != 1:
    count = 0
    y_int = y_int + 1
    y = str(y_int)

    digits = []

    for x in y:
        digits.append(x)

    for i in range(len(y) - 1):
        for j in range(i + 1, len(y)):
            if digits[i] == digits[j]:
                count = count + 1
    
    if count == 0:
        dist = 1
    else:
        dist = 0

print(y_int)



