hdu 1008 Elevator

Elevator

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 60716    Accepted Submission(s): 33314

Problem Description

The highest building in our city has only one elevator. A request list is made up with N positive numbers. The numbers denote at which floors the elevator will stop, in specified order. It costs 6 seconds to move the elevator up one floor, and 4 seconds to move down one floor. The elevator will stay for 5 seconds at each stop.

For a given request list, you are to compute the total time spent to fulfill the requests on the list. The elevator is on the 0th floor at the beginning and does not have to return to the ground floor when the requests are fulfilled.

Input

There are multiple test cases. Each case contains a positive integer N, followed by N positive numbers. All the numbers in the input are less than 100. A test case with N = 0 denotes the end of input. This test case is not to be processed.

Output

Print the total time on a single line for each test case.

Sample Input

1 2
3 2 3 1
0

Sample Output

17
41

Author

ZHENG, Jianqiang

Source

ZJCPC2004 

Recommend

JGShining   |   We have carefully selected several similar problems for you:   ​​1005​​​  ​​​1108​​​  ​​​1061​​​  ​​​1049​​​  ​​​1013​​ 

​​Statistic​​ | ​​Submit​​ | ​​Discuss​​ |​​Note​​

非常简单的模拟题  读懂题意就好了

题意：按照题目给的楼层号顺序 停电梯 往上升耗时6s 往下降耗时4s  楼层停5s

#include <stdio.h>
int main()
{
  int n;
  while(~scanf("%d",&n)&&n)
  {
    int sum=0;
    int current=0;
    for(int i=0;i<n;i++)
    {
      int x;
      scanf("%d",&x);
      if(x>current)
      {
        sum+=6*(x-current)+5;
      }
      else
      {
        sum+=4*(current-x)+5;
      }
      current=x;
    }
    printf("%d\n",sum);
  }
  return 0;
}