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
y=input()
y=int(y)+1
#b=[int(x) for x in str(y)]
#print(y)
#print(b)
madhu=1
while(madhu):
    flag=0
    x=0
    b=[int(x) for x in str(y)]
    #print(b)
    for i in range(0,4):
        for i1 in range(0,4):
            if i != i1:
                if b[i] == b[i1]:
                    flag=1
                   
    if(not flag):
        madhu=0
        #print(y)
    else:
        y=int(y)+1
                    
                    
                    
               

print(y)
#print(b)
    

               
                
