4721: P8787 [蓝桥杯 2022 省 B] 砍竹子
Memory Limit:128 MB
Time Limit:1.000 S
Judge Style:Text Compare
Creator:
Submit:0
Solved:0
Description

Input

Output

Sample Input Copy
6
2 1 4 2 6 7
Sample Output Copy
5
HINT
