Description A New Year party is not a New Year party without lemonade! As usual, you are expecting a lot of guests, and buying lemonade has already become a pleasant necessity. Your favorite store sells lemonade in bottles of n different
這個題二分做,對於確定x更新次,我們可以確定是否能夠更新,如果滿足任意a[i]<x && ∑(x-a[i]) >=x就滿足情況。對x來說x越大,越快讓每個人更新好,這樣就有個單調性,就可以用二分來做。 這題也沒想到二分做,做題要考慮多方面的解題思路把。說穿了還是題刷的不夠多,理解的不夠深刻。 /*If I get TLE , it is good.If I get AC,it's NICE !*/#include
Description Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not. Let
前言: maven預設的本地倉庫一般都在c盤,這時候會給我們重裝C盤遇到一點小麻煩,為了有效防止,往往我們會把本地倉庫遷出c盤,下面我們就來看一下如何遷移。 找到maven的安裝目錄下的conf檔案夾下的settings.xml檔案,右鍵編輯,添加自己的目錄<!-- localRepository | The path to the local repository maven will use to store artifacts. |