5496: 暑期营第一天 矩形墙 (squares)

Memory Limit：128 MB Time Limit：1.000 S
Judge Style：Text Compare Creator：
Submit：6 Solved：6

Description

Input

Output

Sample Input Copy 

6
6 4 2 5 7 3

Sample Output Copy 

12

HINT

对于100%数据: 1 <=n<= 100000，0 <= hi<= 1000000000

Source/Category

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