【ACM】- PAT.A1008 Elevator 【水题】

题目链接

---

/**********************************
*@ID: 3stone
*@ACM: PAT.A1008 Elevator
*@Time: 18/8/26
*@IDE: VSCode 2018 + clang++
***********************************/
#include<cstdio>

using namespace std;

int main() {

    //注：最后的一层还要加5秒停留时间
    int n;
    while(scanf("%d", &n) != EOF) {
        int pre = 0, cur, sum = 0;;
        for(int i = 0; i < n; i++){
            scanf("%d", &cur);
            int dis = cur - pre;
            if(dis > 0){
                sum += 6 * dis + 5;
            } else {
                sum += 4 * (-1) * dis + 5;
            }
            pre = cur;
        }

        printf("%d\n", sum);

    }//while

    return 0;
}