zoj 2108 Elevator

#include "iostream"#include "memory.h"#include "cmath"using namespace std;int num[110];int main(){int N, i, times;while (cin >> N && N){memset(num, 0, sizeof(num));times = 0;for(i = 1; i <= N; i++)cin >> num[i];for(i = 1; i <= N; i++){if (num[i] > num[i-1])    times += abs (double (num[i] - num[i-1])) * 6 + 5;elsetimes += abs(double (num[i] - num[i-1])) * 4 + 5;}cout << times << endl;}}