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=raw_input()
a=int(a)
y=[]
for i in range(0,10):
    y.append(0)
b=0
c=0
for i in range(200000):
    a=a+1
    s=str(a)
    l=list(s)
    l1=len(l)
    for j in range(0,l1):
        b=ord(l[j])
        b=b-48
        y[b]=y[b]+1
    for j in range(0,10):
        if y[j]<2:
            c=1
        else:
            c=0
            break
    for j in range(0,10):
        y[j]=0
    if c==1:
        break

print a
