题集链接: https://cn.vjudge.net/contest/231988 解题之前请先了解组合数取模和Lucas定理 A : FZU-2020 输出组合数C(n, m) mod p (1 <= m <= n <= 10^9, m <= 10^4, m < p < 10^9, p是素数) 由于p较大,不可以打表,直接Lucas求解 #include<iostream> using namespace std; typedef long long
题集见大佬博客 不要62 入门题,检验刚才自己有没有看懂 注意一些细节. 的确挺套路的 #include<bits/stdc++.h> #define REP(i, a, b) for(register int i = (a); i < (b); i++) #define _for(i, a, b) for(register int i = (a); i <= (b); i++) using namespace std; ; int a[MAXN], dp[MAXN][MAXN][
转自:http://blog.csdn.net/shahdza/article/details/7779230 [HDU]1213 How Many Tables 基础并查集★1272 小希的迷宫 基础并查集★1325&&poj1308 Is It A Tree? 基础并查集★1856 More is better 基础并查集★1102 Constructing Roads 基础最小生成树★1232 畅通工程 基础并查集★2120 Ice_cream's world I 基础并查集★212
FFT学习参考这两篇博客,很详细,结合这看,互补. 博客一 博客二 很大一部分题目需要构造多项式相乘来进行计数问题. 1. HDU 1402 A * B Problem Plus 把A和B分别当作多项式的系数. #include <cstdio> #include <algorithm> #include <cmath> #include <cstring> using namespace std; const double PI = acos(-1.0);
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转自:http://blog.csdn.net/shahdza/article/details/7779324 [HDU]2255 奔小康赚大钱 模板题★1533 Going Home 模板题★2426 Interesting Housing Problem KM★3395 Special Fish KM★2282 Chocolate KM★2813 One fihgt one KM★1853 Cyclic Tour 最小费用圈覆盖★★3488 Tour 最小费用圈覆盖★★3435 A new
Title: Given two words word1 and word2, find the minimum number of steps required to convert word1 to word2. (each operation is counted as 1 step.) You have the following 3 operations permitted on a word: a) Insert a characterb) Delete a characterc)