开启传送门

题目描述

开启传送门

题目描述

开启传送门

题目描述

开启传送门

题目描述

开启传送门

题目描述

开启传送门

题目描述

二元运算符

题目描述

给你一个 $ n\ast m $ 的棋盘，有一个 $ 1\ast 1\ast 2 $ 的长方体竖直放在 (1,1)上，你可以将其在棋盘上滚动，你的目标是让其竖直放在 ( n , m ) 上，问至少需要多少次操作。(放倒、竖直、翻滚)

题目描述

An undirected graph is given. Each edge of the graph disappears with a constant probability. Calculate the probability with which the remained graph is connected.

题目描述

In a village called Byteville, there are houses connected with N-1 roads. For each pair of houses, there is a unique way to get from one to another. The houses are numbered from 1 to . The house no. 1 belongs to the village administrator Byteasar. As part of enabling modern technologies for rural areas framework, computers have been delivered to Byteasar’s house. Every house is to be supplied with a computer, and it is Byteasar’s task to distribute them. The citizens of Byteville have already agreed to play the most recent version of FarmCraft (the game) as soon as they have their computers.