杭电1008

//前往同一层的情况要考虑
//fabs()函数,头文件#include
//n=-123;fabs(n)=123;
#include 
//#include 
using namespace std;

int main()
{
    int N,count;
    while(cin>>N)
    {
        if(N==0) break;

        int n[N];

        for(int i=0;i>n[i];

        count=n[0]*6+5;

        for(int j=0;j=0)
                {
                    t1=n[j+1]-n[j];
                    count=count+t1*6+5;

                }
            else
            {
                t2=n[j]-n[j+1];
                count=count+t1*6+t2*4+5;
            }
        }

        cout<

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