D - DZY Loves Modification As we know, DZY loves playing games. One day DZY decided to play with a n × mmatrix. To be more precise, he decided to modify the matrix with exactly koperations. Each modification is one of the following: Pick some row of…

447D - DZY Loves Modification 思路:将行和列分开考虑.用优先队列,计算出行操作i次的幸福值r[i],再计算出列操作i次的幸福值c[i].然后将行取i次操作和列取k-i次操作,那么多加的幸福值就是i*(k-i)*p,因为无论先操作行还是列,每操作一次一个格子只减一次p.这样记录下最大的幸福值. 代码: #include<bits/stdc++.h> using namespace std; #define ll long long ; ; const ll INF=…

B. DZY Loves Modification 题目连接: http://www.codeforces.com/contest/446/problem/B Description As we know, DZY loves playing games. One day DZY decided to play with a n × m matrix. To be more precise, he decided to modify the matrix with exactly k opera…

D. DZY Loves Modification time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output As we know, DZY loves playing games. One day DZY decided to play with a n × m matrix. To be more precise, he decid…

枚举行取了多少次,如行取了i次,列就取了k-i次,假设行列单独贪心考虑然后相加,那么有i*(k-i)个交点是多出来的:dpr[i]+dpc[k-i]-i*(k-i)*p 枚举i取最大值.... B. DZY Loves Modification time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output As we know, DZY l…

D. DZY Loves Modification time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output As we know, DZY loves playing games. One day DZY decided to play with a n × m matrix. To be more precise, he decid…

B. DZY Loves Modification time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output As we know, DZY loves playing games. One day DZY decided to play with a n × m matrix. To be more precise, he decid…

As we know, DZY loves playing games. One day DZY decided to play with a n × m matrix. To be more precise, he decided to modify the matrix with exactly k operations. Each modification is one of the following: Pick some row of the matrix and decrease e…

C - DZY Loves Colors 思路: 分块,复杂度有点玄学,和普通分块不同的是在这个块被一次染色的时候暴力染整个块. 代码: #pragma GCC optimize(2) #pragma GCC optimize(3) #pragma GCC optimize(4) #include<bits/stdc++.h> using namespace std; #define fi first #define se second #define pi acos(-1.0) #defin…

E  DZY Loves Fibonacci Numbers In mathematical terms, the sequence Fn of Fibonacci numbers is defined by the recurrence relation F1 = 1; F2 = 1; Fn = Fn - 1 + Fn - 2 (n > 2). DZY loves Fibonacci numbers very much. Today DZY gives you an array consist…