杭电ACM1.2.1

#include<iostream>
#include<vector>
using namespace std;
int main()
{
int count,number,a,b,sum=0;
vector<int> vec;
while(1)
{
cin>>number;
if(number==0)
break;
a=0;
while(number--)
{
cin>>b;
if(a<b)
{
sum+=(b-a)*6+5;
}
else
{
sum+=(a-b)*4+5;
}
a=b;
}
   vec.push_back(sum);
sum=0;
}
for(int i=0;i<vec.size();i++)
{
cout<<vec[i]<<endl;
}
return 0;
}