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
n=int(input())
while(True):
    n+=1
    k=str(n)
    f=1
    j=0
    while(j!=len(k)-1):
       if k[j] in k[j+1:]:
           f=0
           break
       else:
           j+=1 
    if(f==1):
        break
print(n)
       

  
            
        
        

    
    
    
    
    

    
    
    
        
        
        
    
   
        
        
        
            
        
    
        
        
    
        
        
        
    
   
        
        
        
            
        
    
        
        
    