1008 Elevator
水题~
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
#include <iostream> #include <cstring> #include <string> #include <sstream> #include <string> #include <cstdio> #include <algorithm> #include <vector> #define maxn 1005 #define INF 0x3f3f3f3f #define EPS 1e-6 #define pi acos(-1.0) using namespace std; typedef long long ll; int n,x; int main() { cin>>n; int ans=0; int tmp=0; for(int i=0;i<n;i++) { cin>>x; if(x>tmp) ans+=(x-tmp)*6; else ans+=(tmp-x)*4; tmp=x; } ans+=5*n; cout<<ans<<endl; return 0; }