. 序言 开启python刷题时代,主要也是为了面试。 . 题目 Given the root node of a binary search tree and two integers low and high, return the sum of values of all nodes with a value in the inclusive range [low, high].
来源 题目 You are playing a very popular Tower Defense game called "Runnerfield 2". In this game, the player sets up defensive towers that attack enemies moving from a certain starting point to the pla
A - Yogurt Sale 题意:需要购买n个物品,a元买1个,b元买两个,求恰好购买n个物品的最少花费。 模拟 void solve() {cin >> n;int a, b;cin >> a >> b;int cost = a * n;for(int i = 0 ; i < n ; i ++){int t = a * i;int res = n -
Codeforces Round 938 (Div. 3) (A~E) 目录:A B C D E A题:Yogurt Sale 标签: 数学(math) 题目大意 酸奶价格, a 元一份,b元两份n问:买n份最少多少钱 思路 a元一份,b元两份,总有一个比较低,一份一份买或两份两份买取小的一个即可,特判n为奇数多买一个a AC代码 #include <bits/stdc+