標籤:acm本文由swellspirit貢獻ACM• I can accept failure. but I can‘t accept not trying. Life is often compared to a marathon, but I think it is more like being a sprinter; long stretches of hard work punctuated by brief moments in which we are given
標籤:設g[i]表示n=i時的答案,則OEIS上可以找到如下遞推式:g[i]=g[i-1]+g[i-2]-g[i-5]-g[i-7]+...其中符號為++--交替,第i項為f[i],f[1]=1,f[2]=2,f[3]=5,f[4]=7f[i]=3+2*f[i-2]-f[i-4]注意到f[731]>200000,所以對於每個i,大約只有$O(\sqrt{i})$個決策。故時間複雜度為$O(n\sqrt{n})$。 #include<cstdio>const int
標籤:Given two strings s and t, write a function to determine if t is an anagram of s.For example,s = "anagram", t = "nagaram", return true.s = "rat", t = "car", return false.Note:You may
標籤:題目大意:給一個數n,找出一個各位全是1的最小的十進位數,使得n能整除這個數。只輸出最小位元。題目分析:純粹是數論,暴力。代碼如下:# include<iostream># include<cstdio># include<cstring># include<algorithm>using namespace std;int solve(int n){ int cnt=0; unsigned long long x=0;
標籤:Given a sorted integer array without duplicates, return the summary of its ranges.For example, given [0,1,2,4,5,7], return ["0->2","4->5","7"].public class Solution { public List<String> summaryRanges(int[] nums) {
標籤:OFFICE沒有正確安裝,每次開啟OFFICE都會提示:“The setup controller has encountered a problem during instll.Please review the log files for further information on the error.” 使用微軟的完全卸載工具,卸載後,重新安裝可以很好解決。 Windows Installer Cleanup Utility
標籤:Found from StackOverflow:=============================================================================================The following routines are available for setting up input buffers for scanning in-memory strings instead of files (as