LeetCode 983. Minimum Cost For Tickets
原题链接在这里: https://leetcode.com/problems/minimum-cost-for-tickets/ 题目: In a country popular for train travel, you have planned some train travelling one year in advance. The days of the year that you will travel is given as an array days . Each day is an integer from 1 to 365 . Train tickets are sold in 3 different ways: a 1-day pass is sold for costs[0] dollars; a 7-day pass is sold for costs[1] dollars; a 30-day pass is sold for costs[2] dollars. The passes allow that many days of consecutive travel. For example, if we get a 7-day pass on day 2, then we can travel for 7 days: day 2, 3, 4, 5, 6