PAT(A) 1008

#include<stdio.h>#include<stdlib.h>int main(){int n,last,totaltime,now;scanf("%d",&n);last = 0;totaltime = 0;while(n--){scanf("%d",&now);if(now>last) totaltime += (now - last)*6 + 5;else if(now<last) totaltime += (last - now)*4 + 5;else totaltime += 5;last = now;}printf("%d\n",totaltime);}