Shanghai Regional Online Contest 1004 In the ACM International Collegiate Programming Contest, each team consist of three students. And the teams are given 5 hours to solve between 8 and 12 programming problems. On Mars, there is programming contest,…

2017-2018 ACM-ICPC Southeastern European Regional Programming Contest (SEERC 2017) 全靠 wxh的博客 补完这套.wxhtxdy! [A - Concerts] $f[i][k]$ 表示在第 $i$ 个位置刚好匹配了 $k$ 个字符.转移方程 $$ f[i][k] = \sum_{i - j > h[s[k - 1]]} f[j][k - 1] $$ 前缀和优化加滚动就行了. 好像可以直接用 $f[i][k]$ 表…

layout: post title: 2018-2019 ACM-ICPC Southeastern European Regional Programming Contest (SEERC 2018) author: "luowentaoaa" catalog: true tags: mathjax: true - codeforces B.Broken Watch 题解 先不考虑长度 长度不会影响会不会过中心. 如果长度相同 \(C_{n}^{3}\) 再减去不符合的再同一侧的.…

2017-2018 ACM-ICPC Latin American Regional Programming Contest 试题地址:http://codeforces.com/gym/101889 总体情况 总共通过7题CEFGHIJ.其中我完成HIJ三题.纯属被大佬带飞系列. 解题报告 H - Hard choice 签到题 #include <bits/stdc++.h> using namespace std; int a1,b1,c1,a2,b2,c2; int main() {…

$$2017-2018\ ACM-ICPC\ Latin\ American\ Regional\ Programming\ Contest$$ \(A.Arranging\ tiles\) \(B.Buggy\ ICPC\) 分元音位置情况和数量讨论,没有元音答案是1,如果有元音但不在第一个位置上是无法构造出来的,然后其他情况找到最初始的情况的辅音数量即可 //#pragma comment(linker, "/STACK:1024000000,1024000000") #inclu…

题目链接:https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&category=648&page=show_problem&problem=5150 题目大意:给一幅N个点M条边的无向图,有一些边,其中一部分只能涂红色,一部分只能涂黑色,一部分两种颜色都可以涂.现要求红色的边不超过K条的生成树个数模1e9+7的值. 思路:感谢昂神滋磁,贴链接:http://sd-invol…

题目链接:https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&category=648&page=show_problem&problem=5155 There are N guests checking in at the front desk of the hotel. 2K (0 ≤ 2K ≤ N) of them are twins.There are M room…

题目链接:https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&category=648&page=show_problem&problem=5153 In an infinite chess board, some pawns are placed on some cells.You have a rectangular bomb that is W width and H…

题目链接:https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&category=648&page=show_problem&problem=5159 In normal football games, the winner team gets 3 points, loser team gets 0 point, and if there is a drawgame, bot…

题目链接:https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&category=648&page=show_problem&problem=5151You have a rectangle of size N × M, N rows from top to bottom and M columns from left to right,that is divided int…