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
from collections import deque
import math
n = int(input())
#print(n//1000)
#print((n%1000)//100)
#print((n%100)//10)
#print(n%10)
while(True):
    n+=1
    if (n//1000)!=((n%1000)//100) and (n//1000)!=(n%100)//10 and (n//1000)!=(n%10):
       if ((n%1000)//100)!=(n%100)//10 and ((n%1000)//100)!=(n%10):
            if ((n%100)//10)!=(n%10):
                print(n)
                break;


