D. Igor In the Museum Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/598/problem/D Description Igor is in the museum and he wants to see as many pictures as possible. Museum can be represented as a rectangular field of n ×…
题目链接 Problem D 比赛的时候完全想不到 直接对给定的这些点做多源$BFS$,把给定的这些点全都压到队列里,然后一个个做. 最后统计被访问的点的个数即可. #include <bits/stdc++.h> using namespace std; #define rep(i, a, b) for (int i(a); i <= (b); ++i) #define dec(i, a, b) for (int i(a); i >= (b); --i) #define MP…
Codeforces Round #599 (Div. 2) D. 0-1 MST Description Ujan has a lot of useless stuff in his drawers, a considerable part of which are his math notebooks: it is time to sort them out. This time he found an old dusty graph theory notebook with a descr…
Codeforce 1105 D. Kilani and the Game 解析(裸BFS.實作) 今天我們來看看CF1105D 題目連結 題目 給一個\(n\times m\)的地圖,地圖上有幾種格子:空地.路障.某個玩家的某些城堡.(可能有\(1\le p\le9\)個玩家) 給定一開始每個玩家至少有一個城堡,玩家照順序移動,每個玩家有自己的移動步數,求最後每個玩家能有幾個城堡. 前言 寫這題一直TLE,搞了好幾個小時才發現如果每次BFS都宣告一個新的queue,那麼可能會因為allocat…
Kilani is playing a game with his friends. This game can be represented as a grid of size n×mn×m, where each cell is either empty or blocked, and every player has one or more castles in some cells (there are no two castles in one cell). The game is p…