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
Fecha=int(input())
Nueva=Fecha
Verificar=0
while(Verificar<1):
    Nueva=Nueva+1
    UM=(Nueva//1000)
    C=(Nueva//100)%10
    D=(Nueva//10)%10
    U=Nueva%10
    if(UM!=C)and(UM!=D)and(UM!=U)and(C!=D)and(C!=U)and(D!=U):
        Verificar=1
print(Nueva)
