AtCoder Beginner Conest 284 解题报告 \(\text{By DaiRuiChen007}\) \(\text{Contest Link}\) A. Sequence of Strings 模拟,时间复杂度 \(\Theta(n)\) #include<bits/stdc++.h> using namespace std; signed main() { int n; cin>>n; vector <string> v(n); for(int…

AtCoder Beginner Contest 285 解题报告 \(\text{DaiRuiChen007}\) Contest Link A. Edge Checker 2 假设 \(a\ge b\),当且仅当 \(\left\lfloor\dfrac a2\right\rfloor=b\) 时成立 时间复杂度 \(\Theta(1)\) #include<bits/stdc++.h> using namespace std; signed main() { int a,b; scanf…

手速选手成功混进rated only里面的前30名,但是总排名就到110+了... A - Double Helix #include <bits/stdc++.h> #define ll long long #define inf 0x3f3f3f3f #define il inline namespace io { #define in(a) a = read() #define out(a) write(a) #define outn(a) out(a), putchar('\n') #…

题目地址 https://atcoder.jp/contests/abc146/tasks 感觉没有什么有意思的题... 题解 A #include <bits/stdc++.h> using namespace std; string s; int main() { cin >> s; int now = 0; if(s[0] == 'S') { if(s[1] == 'U') now = 0; else now = 6; } if(s[0] == 'M') now = 1; i…

心态爆炸.本来能全做出来的.但是由于双开了Comet oj一个比赛,写了ABC就去搞那个的B题 还被搞死了. 回来写了一会D就过了.可惜比赛已经结束了.真的是作死. A - Buttons #include <cstdio> using namespace std; int main() { int x, y; scanf("%d%d", &x, &y); int ans = x > y ? x : y; if (x > y) x--; else…

A - B +/- A #include <bits/stdc++.h> int main() { int a, b; std::cin >> a >> b; b % a ? std::cout << b - a : std::cout << a + b; } B - Foods Loved by Everyone #include <bits/stdc++.h> int cnt[31], ans; int main() { int…

为啥最近都没有arc啊... A - Favorite Sound #include <algorithm> #include <iostream> #include <cstring> #include <cstdlib> #include <cstdio> #include <vector> #include <queue> #include <cmath> #include <stack> #…

果然abc都是手速场. 倒序开的qwq. D题因为忘记1e12二进制几位上界爆了一发. A - Entrance Examination 就是除一下就行了... 看样例猜题意系列. #include<cstdio> #include<algorithm> #include<cstring> int main(){ double t,x; scanf("%lf%lf",&t,&x); printf("%lf",t/x…

前四题都好水.后面两道题好难. C Divide the Problems #include <cstdio> #include <algorithm> using namespace std; inline int read() { , f = ; char ch = getchar(); ; ch = getchar(); } + ch - ; ch = getchar(); } return x * f; } ; int a[N]; int main() { int n =…

传送门 写了四个题就跑去打球了.第五题应该能肝出来的. A - Airplane #include <bits/stdc++.h> using namespace std; inline int read() { , f = ; char ch = getchar(); ; ch = getchar(); } + ch - ; ch = getchar(); } return x * f; } int main() { int a = read(), b = read(), c = read(…