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
yr=int(input())
yr+=1
while(True):
    yrs=str(yr)
    c=0
    yrsdu=[]
    for ji in yrs:
        if ji  not in yrsdu:
            c=c+1
            #print("ji",ji)
            yrsdu.append(ji)
    #print("c len",c,len(yrs))
    if(c==len(yrs)):
        print(yr)
        break;
    else:
        yr+=1