#include <iostream>
#include<cstdio>
using namespace std;
int cost(int a[],int len){
int time=0;
for(int i=1;i<=len;i++){
if(a[i]-a[i-1]>0){
time+=(a[i]-a[i-1])*6;
}else if(a[i]-a[i-1]<0){
// replace abs function
time+=(a[i-1]-a[i])*4;
}
}
time+=5*len;
return time;
}
int main()
{
int n;
int a[101];
while(scanf("%d",&n)&&n){
int time=0;
a[0]=0;
for(int i=1;i<=n;i++){
scanf("%d",&a[i]);
}
time=cost(a,n);
cout<<time<<endl;
}
return 0;
}
hdu 1008 elevator
最新推荐文章于 2020-02-09 09:15:44 发布