这个题目一开始看错了题目，理解错了意思。。。唉，总是犯这种毛病啊悲催，记得去buaa也是犯了这毛病害的第一题就没AC，哭……
好了，上源码！
1 #include <stdio.h> 2 3 int main(){ 4 int up = 6, down = 4, stop = 5; 5 int n, i; 6 while((scanf("%d",&n) != EOF)&& n){ 7 int floor, fore = 0, time = 0; 8 for(i = 0; i < n; i++){ 9 scanf("%d",&floor); 10 if(floor > fore){ 11 time += up * (floor - fore) + stop; 12 } 13 else{ 14 time += down * (fore - floor) + stop; 15 } 16 fore = floor; 17 } 18 printf("%d ",time); 19 } 20 return 0; 21 }
嗯。