Elevator (20)

1  https://www.patest.cn/contests/pat-a-practise

2 source code 

#include<stdio.h>
int main(void){
   int n,i,time;
   time=0;
   scanf("%d",&n);
   int a[1000];
   a[0]=0; 
    for(i=1;i<=n;i++){
      scanf("%d",&a[i]);
      if(a[i]>a[i-1]){ 
        time+=(a[i]-a[i-1])*6; 
    }else if(a[i-1]>a[i]){ 
        time+=(a[i-1]-a[i])*4;
    }
       time=time+5; 
  }
      printf("%d",time);
}