1785: 上升子序列
          Memory Limit:128 MB
          Time Limit:2.000 S
         
      
      
        
          Judge Style:Text Compare
          Creator:
      
      
          Submit:9
          Solved:2
      
Description

Sample Input Copy
4
1 2 3 3
Sample Output Copy
4
HINT
对于 30% 的数据,N ≤ 5000
对于 100% 的数据,N ≤ 105