qq_42756072的博客

#include<iostream>#include<string>#include<algorithm>using namespace std;//大数加法string addString(string a,string b){ int carry=0; string res; int i=a.size()-1; int j=b.size()-1; while(i>=0 && j>=0)

原题链接：https://www.nowcoder.com/practice/d7c03b114f0541dd8e32ce9987326c16?tpId=40&tqId=21406&tPage=1&rp=1&ru=/ta/kaoyan&qru=/ta/kaoyan/question-ranking#include<cstdio>#inc...

原题链接：https://www.nowcoder.com/practice/e372b623d0874ce2915c663d881a3ff2?tpId=40&tqId=21483&tPage=1&rp=1&ru=/ta/kaoyan&qru=/ta/kaoyan/question-ranking#include<cstdio>#inc...

原题链接：https://www.nowcoder.com/practice/d6bd75dbb36e410995f8673a6a2e2229?tpId=40&tqId=21479&tPage=1&rp=1&ru=/ta/kaoyan&qru=/ta/kaoyan/question-ranking#include<cstdio>#incl...

原题链接:https://www.nowcoder.com/practice/20426b85f7fc4ba8b0844cc04807fbd9?tpId=40&tqId=21338&tPage=1&rp=1&ru=/ta/kaoyan&qru=/ta/kaoyan/question-ranking#include<cstdio>#incl...

std::string str;int i = atoi(str.c_str());

原题链接：https://leetcode-cn.com/problems/longest-substring-without-repeating-characters##3 给定一个字符串，请你找出其中不含有重复字符的 最长子串 的长度。示例 1:输入: “abcabcbb”输出: 3解释: 因为无重复字符的最长子串是 “abc”，所以其长度为 3。示例 2:输入: ...

附上原题链接：https://codeforces.com/contest/996/problem/E这题的解法真的很玄学，简单来说就是对这个数组进行一种操作，如果该操作的结果不能满足条件，就对该数组进行随机排列，再进行这种操作，重复上述过程，知道满足条件。#include<bits/stdc++.h>#include<iostream>#include...

比较简单，照着公式算就可以了。#include<bits/stdc++.h>using namespace std;#define inf 0x3f3f3f3f#define eps 1e-6typedef long long ll;const ll N = 1e3;double x[N];double y[N];double f(double x, dou...

#include<bits/stdc++.h>#define e 2.718281828489#define eps 0.5*1e-5#define eps2 1e-12#define inf 0x3f3f3f3fusing namespace std;typedef long long ll;const ll N = 1e5;double f1(double x)...

参考教材：《信息论（第四版）——基础理论与应用》教材给的算法描述让我怀疑作者有没有亲自编程尝试过。注意到 x^(lny) = y.#include<bits/stdc++.h>using namespace std;typedef long long ll;const ll N = 1e3;const double eps = 1e-6;double p[N...

原题链接：https://codeforces.com/gym/101086/problem/AWith the SCPC2015 getting closer, Noura Boubou, SCPC Head of Media, was very busy to the extent of not having time to recharge her phone's credit bala...

原题链接：https://codeforces.com/gym/1010After Noura's brother, Tamim, finished his junior training, coach Fegla was impressed with his progress. He told Noura that if Tamim would solve the following pro...

原题链接：https://codeforces.com/gym/101810/problem/CYou are given a positive integern. Your task is to build a numbermby flipping the minimum number of bits in the binary representation ofnsuch tha...

原题链接：https://codeforces.com/gym/101810/problem/BAbood's birthday has come, and hisnfriends are aligned in a single line from1ton, waiting for their cookies, Abood hasxcookies to give to his f...

原题链接：https://vjudge.net/problem/1610119/origin解决思路：答案是(a1-1)*a2*a3*...*an + a1*(a2-1)*a3*a4*...*an+a1*a2*(a3-1)*a4*...*an+.....+a1*a2*a3*...*(an-1)在处理的时候，可以开数组分别记录a1*a2*...(ai-1),再开了数组j记录a[i]*a[...

这道题很容易卡时间，最后求概率要用递推法求，暴力求会超时#include<bits/stdc++.h>using namespace std;typedef long long ll;#define inf 0x3f3f3f3fconst ll N = 1e3;ll fac[N];int a[15];double ans[N];bool cmp(char a,...

#include<bits/stdc++.h>using namespace std;typedef long long ll;const ll N = 1e3;double f1(double x){ double ans = 1.0 / (1.0+ sin(x) * sin(x) ); return ans;}double f2(double x){ re...

B. Print Checktime limit per test 1 secondmemory limit per test 256 megabytesinput standard inputoutput standard outputKris works in a large company “Blake Technologies”. As a best engineer of th...