PAT 甲级 1008

代码如下

#include<cstdio>#include<iostream>#include<cstring>#include<algorithm>using namespace std;int main(){int ans=0;int n,a[105];scanf("%d",&n); for(int i=0;i<n;i++)scanf("%d",&a[i]);int p=0;for(int i=0;i<n;i++){if(p<a[i]) {ans+=(a[i]-p)*6;ans+=5;} else{ans+=(p-a[i])*4;ans+=5;}p=a[i];}printf("%d\n",ans); }