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
a = int(input())
a += 1
b = a % 10
c = (a % 100 - b) // 10
x = (a % 1000 - c - b) // 100
y = (a % 10000 - c - b - x) // 1000

for i in range(9000) :
    if (((b == c) or (b == x) or (b == y)) or ((c == b) or (c == x) or (c == y)) or ((x == c) or (x == b) or (x == y)) or ((y == c) or (y == x) or (y == b))) :
        a += 1
        b = a % 10
        c = (a % 100 - b) // 10
        x = (a % 1000 - c - b) // 100
        y = (a % 10000 - c - b - x) // 1000
        
else :
    print(a)