思想;跟据题意进行编程即可【注意每次与上一个数进行比较】;
代码:
#include <iostream> #include <cstdio> #include <cstring> #include <map> #include <algorithm> #include <sstream> #include <set> #include <string> #include <stack> #include <vector> using namespace std; const int N = 50; typedef long long LL; const int inf = 0x3f3f3f3f; int main() { LL n; while(cin>>n&&n) { LL m,ml,t=0; cin>>m; t+=m*6; for(int i=1;i<n;i++) { cin>>ml; if(ml>=m) t+=(ml-m)*6; else t+=(m-ml)*4; m=ml; } cout<<t+5*n<<endl; } return 0; }