1010 C语言--Elevator
#include "stdio.h"
#include "stdlib.h"
int main(){
int n=1,i,sum;
int *a;
while(scanf("%d", &n) != EOF && n!=0){
a = (int *)malloc((n+1)*sizeof(int));
a[0] = 0;
sum = 0;
for(i=1;i<n+1;i++){
scanf("%d", &a[i]);
}
for(i=1;i<n+1;i++){
sum += 5;
int temp = a[i]-a[i-1];
if(temp < 0){
sum = sum - temp*4;
} else if(temp>0){
sum = sum + temp*6;
}
}
printf("%d\n", sum);
free(a);
}
}