AtCoder Beginner Contest 172 题解 目录 AtCoder Beginner Contest 172 题解 A - Calc B - Minor Change C - Tsundoku D - Sum of Divisors E - NEQ F - Unfair Nim A - Calc 程序如下(真的有人需要嘛): #include<bits/stdc++.h> using namespace std; int main(){ ios::sync_with_stdi…

比赛链接:https://atcoder.jp/contests/abc172/tasks A - Calc 题意 给出一个正整数 $a$,计算 $a + a^2 + a^3$ .($1 \le a \le 10$) 代码 #include <bits/stdc++.h> using namespace std; int main() { int a; cin >> a; cout << a + a * a + a * a * a; } B - Minor Change…

A - Happy Birthday! Time limit : 2sec / Memory limit : 1000MB Score: 100 points Problem Statement E869120's and square1001's 16-th birthday is coming soon.Takahashi from AtCoder Kingdom gave them a round cake cut into 16 equal fan-shaped pieces. E869…

没看到Beginner,然后就做啊做,发现A,B太简单了...然后想想做完算了..没想到C卡了一下,然后还是做出来了.D的话瞎想了一下,然后感觉也没问题.假装all kill.2333 AtCoder Beginner Contest 052 A题意: 输出大的面积? 思路: max(A*B,C*D); AtCoder Beginner Contest 052 B题意: 枚举过程,然后...太水了.. AtCoder Beginner Contest 052 C题意: 输出N!的因子个数mod1…

A - ABC/ARC Time limit : 2sec / Memory limit : 256MB Score : 100 points Problem Statement Smeke has decided to participate in AtCoder Beginner Contest (ABC) if his current rating is less than 1200, and participate in AtCoder Regular Contest (ARC) oth…

AtCoder Beginner Contest 136 题目链接 A - +-x 直接取\(max\)即可. Code #include <bits/stdc++.h> using namespace std; typedef long long ll; const int N = 2e5 + 5; int main() { ios::sync_with_stdio(false); cin.tie(0); int a, b; cin >> a >> b; cout &…

AtCoder Beginner Contest 137 F 数论鬼题(虽然不算特别数论) 希望你在浏览这篇题解前已经知道了费马小定理 利用用费马小定理构造函数\(g(x)=(x-i)^{P-1}\) \[x=i,g(x)=0\] \[x\ne i ,g(x)=1\] 则我们可以构造 \[f(x)=\sum^{i=0}_{P-1}(-a_i*(x-i)^{P-1}+a_i)\] 对于第\(i\)条式子当且仅当\(a_i=1 \ and \ x=i\)时取到\(1\) 代码写的比较奇怪 const…

A - Rating Goal Time limit : 2sec / Memory limit : 256MB Score : 100 points Problem Statement Takahashi is a user of a site that hosts programming contests.When a user competes in a contest, the rating of the user (not necessarily an integer) changes…

AtCoder Beginner Contest 079 D - Wall Warshall Floyd 最短路....先枚举 k #include<iostream> #include<cstdio> #include<cstring> #include<algorithm> using namespace std; ][]; int H, W, A, ans; int main() { scanf("%d%d", &H, &a…

AtCoder Beginner Contest 064 D - Insertion Problem Statement You are given a string S of length N consisting of ( and ). Your task is to insert some number of ( and ) into S to obtain a correct bracket sequence.Here, a correct bracket sequence is def…