【PAT】1008 Elevator(20)
#include <iostream>
using namespace std;
int main()
{
int n, num, now = 0, res = 0;
cin >> n;
for (; n--; now = num)
{
cin >> num;
if (num > now)
res += (num - now) * 6 + 5;
else
res += (now - num) * 4 + 5;
}
cout << res;
return 0;
}