C :

#include<stdio.h>

int main()
{
	int n,i,a[100],s;
	while(scanf("%d",&n)!=EOF,n)
	{
		for(i=0;i<n;i++)
			scanf("%d",&a[i]);
		s=5*n+a[0]*6;
		for(i=0;i<n-1;i++)
		{
			if(a[i]>a[i+1])
				s+=4*(a[i]-a[i+1]);
			else
				s+=6*(a[i+1]-a[i]);
		}
		printf("%d\n",s);
	}
	return 0;
}

C++ :

#include<stdio.h>

int main()
{
	int n,i,a[100],s;
	while(scanf("%d",&n)!=EOF,n)
	{
		for(i=0;i<n;i++)
			scanf("%d",&a[i]);
		s=5*n+a[0]*6;
		for(i=0;i<n-1;i++)
		{
			if(a[i]>a[i+1])
				s+=4*(a[i]-a[i+1]);
			else
				s+=6*(a[i+1]-a[i]);
		}
		printf("%d\n",s);
	}
	return 0;
}

Java :

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		while(true){
			int n = in.nextInt();
			if(n==0)break;
			int last = 0;
			int cou = 0;
			for(int i=0;i<n;i++){
				int next = in.nextInt();
				if(next>last)cou+=6*(next-last)+5;
				else if(next<last)cou+=4*(last-next)+5;
				else cou+=5;
				last = next;
			}
			System.out.println(cou);
		}
	}

}