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题意：给你一个n*m的数阵 对于一行到另一行，若存在一列从上到下递减，则称之符合题意The first line of the input contains two positive integers n and m (1 ≤ n·m ≤ 100 000) — the number of rows and the number of columns in the table respective...

Problem Description电子科大本部食堂的饭卡有一种很诡异的设计，即在购买之前判断余额。如果购买一个商品之前，卡上的剩余金额大于或等于5元，就一定可以购买成功（即使购买后卡上余额为负），否则无法购买（即使金额足够）。所以大家都希望尽量使卡上的余额最少。某天，食堂中有n种菜出售，每种菜可购买一次。已知每种菜的价格以及卡上的余额，问最少可使卡上的余额为多少。Input多组数据。对...

链接：https://ac.nowcoder.com/acm/problem/21902来源：牛客网题目描述平面上有n个点，问：平面上所有三角形面积第k大的三角形的面积是多少?输入描述:第一行T，表示样例的个数。对于每一组样例，第一行两个整数n和k，接下来n行，每行两个整数x,y表示点的坐标T<=803<=n<=100-109<=x,y<=109...

D2. Coffee and Coursework (Hard Version)time limit per test2.5 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputThe only difference between easy and hard versi...

Problem DescriptionThe doggie found a bone in an ancient maze, which fascinated him a lot. However, when he picked it up, the maze began to shake, and the doggie could feel the ground sinking. He rea...