2128: 小木棍(2024)
          Memory Limit:512 MB
          Time Limit:1.000 S
         
      
      
        
          Judge Style:Text Compare
          Creator:
      
      
          Submit:5
          Solved:2
      
Description

Input

Output

Sample Input Copy
5
1
2
3
6
18Sample Output Copy
-1
1
7
6
208HINT
 
 