time limit per test2 secondsmemory limit per test265 megabytesinputstandard inputoutputstandard outputHaving watched the last Harry Potter film, little Gerald also decided to practice magic. He found in his father's magical book a spell that turns
time limit per test2 secondsmemory limit per test64 megabytesinputstandard inputoutputstandard outputJohnny has a younger sister Anne, who is very clever and smart. As she came home from the kindergarten, she told his brother about the task that her
time limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputFox Ciel and her friends are in a dancing room. There are n boys and m girls here, and they never danced before. There will be some songs, during
公開課地址:https://class.coursera.org/ml-003/class/index 授課老師:Andrew Ng1、learning with large datasets(大資料學習)前面在機器學習設計這一講中已經提到過資料量的重要性,要記住的是這句話:It is not who has the best algorithm that wins. It is who has the most data.在機器學習應用中,如果出現了過擬合的情況,那增加資料規模是很有協助的,但
time limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputA magic number is a number formed by concatenation of numbers 1, 14 and 144. We can use each of these numbers any number of times. Therefore 14144,
time limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputThere is a straight snowy road, divided into n blocks. The blocks are numbered from 1 to n from left to right. If one moves from the i-th block to
time limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputA number is called almost prime if it has exactly two distinct prime divisors. For example, numbers 6, 18, 24 are almost prime, while 4, 8, 9, 42
time limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputIahub got bored, so he invented a game to be played on paper.He writes n integers a1, a2, ..., an. Each of those integers can be either 0 or 1. He's
公開課地址:https://class.coursera.org/ml-003/class/index 授課老師:Andrew Ng1、problem description and pipeline(問題描述和流水線)OCR是optical character recognition的縮寫,翻譯過來就是光學字元辨識。照片中的OCR技術其實就是識別中照片中存在的字元,例如下面這幅圖:關於過程,主要有以下幾個步驟:首先是檢測文字,找到文字出現的地區,然後是對文字進行劃分變成一個個單一的字母,最後是