hdu1008简单电梯时间计算

#include<iostream>#include<cstdio>using namespace std;int a[10000],N,i,j,sum;int  totle_time(int s[]){    int k=0;    i=1;    j=0;    while(i<=N)    {        while(j<s[i])        {            k+=6;            j++;        }        while(j>s[i])        {            k+=4;            j--;        }        if(j==s[i])        {            k+=5;        }        i++;    }    return k;}int main(){    while(scanf("%d",&N)!=EOF,N)    {        sum=0;        for(i=1;i<=N;i++)        {            scanf("%d",&a[i]);        }        sum=totle_time(a);        printf("%d\n",sum);    }    return 0;}