hdu_1008 Elevator

http://acm.hdu.edu.cn/showproblem.php?pid=1008

代码：

#include<iostream>using namespace std;int num;void elavator(int *b){ int time=0; for(int i=1;i<=num;i++){if(b[i]>b[i-1])        time+=(b[i]-b[i-1])*6;    else if(b[i]<b[i-1])    time+=(b[i-1]-b[i])*4; } cout<<time+5*num<<endl;}int  main(){ int a[102]; a[0]=0; while(cin>>num&&num){         //***   for(int i=1;i<=num;i++)   cin>>a[i];   elavator(a); } return 0;}