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<= 1000000 <= hi<= 1000000000