链接:https://vijos.org/p/1002 题意:一条长度为L(L <= 1e9)的桥上有N(1<= N <= 100)颗石头.桥的起点为0终点为L.一只青蛙从0开始跳,每次跳的长度在s,t(1<= s <= t <= 10)之间.问青蛙过河最少踩到的石头的数量? 思路:区间dp的感觉很强烈..但是范围实在是太大了.并且有一种感觉就是当两颗相邻的石头之间的距离相距很远时,其中间的很大一段其实状态只是一个递推的关系,即只是传递,并没有改变一段区间的状态.并且有…
题 Shi realized that he was almost out of money, even renting Shitalian lands. Shi was walking on a street, while thinking of a way to recover his fortune. In his way, he passed by a jewelry store. The owner of the store was a Shitalian man suspected…