代码: ll n,x;ll cnt[N];ll ans;intmain(){ios::sync_with_stdio(false);cin.tie(0);cin>>n;for(inti=1;i<=n;i++){cin>>x;for(intj=0;j<20;j++){if((x>>j)&(ll)1){cnt[j]++;}}}for(inti=1;i<=n;i++){ll cur=0;for(intj=0;j<20;j++){if(cnt[j]){cnt[j]--;cur+=1ll<<j;}}ans+=cur*...
Codeforces Global Round 8 D. AND, OR and square sum(位运算) 题目链接:https://codeforces.com/contest/1368/problem/D 题意 给出一个大小为nn的数组aa,每次可以选两个下标不同的元素,一个赋为二者相与的值,同时一个赋为二者相或的值,计算∑ni=1a2i∑i=1nai2的最大值。
Look no further! In this blog post, we shall dive into some valuable tips and tricks in order to help you get started on Codeforces. Whether you're aiming to improve your problem-solving skills or climb up the ranks and surpass Benq, these tips will set you on the right path for succe...
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1465 B - Square or Not C++17 (GCC 7-32) brute force math strings *800 Sep/01/2024 20:49 1464 A - Sakurako's Exam C++17 (GCC 7-32) brute force constructive algorithms greedy math *800 Sep/01/2024 20:40 1463 D - Bonus EXP C++ 17 (gcc 12.2) AtCoder *400 Aug/31/2024 18:42...
https://codeforces.com/problemset/problem/282/C 输入输出样例 做题情况记录 题目大意: 给两个由01组成的字符串,称为A串和B串,可以对A串进行操作,操作是选择两个相邻字符,做(异或操作)和(或)操作得到p与q,然后将这两个字符替换为pq。 问A串经过操作之后是否可以变为B串。
Chris tried filling in random numbers but it didn't work. ZS the Coder realizes that they need to fill in a positive integer such that the numbers in the grid forma magic square. This means that he has to fill in a positive integer so that the sum of the numbers in each row of the...
Bearland is a big square on the plane. It contains all points with coordinates not exceeding106by the absolute value. There arenhouses in Bearland. Thei-th of them is located at the point(xi, yi). Thenpoints are distinct, but some subsets of them may be collinear. ...
codeforces_solutionsProblemSolution 1A - Theatre Square Rust 4A - Watermelon Rust 71A - Way Too Long Words Rust 158A - Next Round Rust 231A - Team Rustleetcode_solutions(problem number with 🔒 suffix need leetcode VIP to unlock)#ProblemSolutionsCategory/Comment...
are white. She introduced a two-dimensional coordinate system on this sheet and drewnblack horizontal and vertical segments parallel to the coordinate axes. All segments have width equal to1 square, that means every segment occupy some set of neighbouring squares situated in one row or one ...