模拟/hdu 1008 Elevator

 1 /*
 2     PROBLEM:hdu1007
 3     AUTHER:Nicole Lam
 4     MEMO:模拟
 5 */
 6 
 7 
 8 #include<cstdio>
 9 using namespace std;
10 
11 int main()
12 {
13     int n;
14     scanf("%d",&n);
15     while (n!=0)
16     {
17         int now=0,time=0,next;
18         for (int i=1;i<=n;i++)
19         {
20             scanf("%d",&next);
21             if (next>=now) time+=(next-now)*6+5;
22             else time+=(now-next)*4+5;
23             now=next;
24         }
25         printf("%d\n",time);
26         scanf("%d",&n);
27     }
28 
29     return 0;
30 }