t记录每个格子最早被砸的时间,bfs(x,y,t)表示当前状态为(x,y)格子,时间为t.因为bfs,所以先搜到的t一定小于后搜到的,所以一个格子搜一次就行 #include<iostream> #include<cstdio> #include<queue> using namespace std; const int N=505,inf=1e9,dx[]={-1,1,0,0,0},dy[]={0,0,-1,1,0}; int n,m,t[N][N]; bool v[…
POJ 3669 Meteor Shower(流星雨) Time Limit: 1000MS Memory Limit: 65536K Description 题目描述 Bessie hears that an extraordinary meteor shower is coming; reports say that these meteors will crash into earth and destroy anything they hit. Anxious for her sa…
题目描述 Bessie hears that an extraordinary meteor shower is coming; reports say that these meteors will crash into earth and destroy anything they hit. Anxious for her safety, she vows to find her way to a safe location (one that is never destroyed by a…
题目描述 Bessie hears that an extraordinary meteor shower is coming; reports say that these meteors will crash into earth and destroy anything they hit. Anxious for her safety, she vows to find her way to a safe location (one that is never destroyed by a…
P2895 [USACO08FEB]流星雨Meteor Shower 题目描述 Bessie hears that an extraordinary meteor shower is coming; reports say that these meteors will crash into earth and destroy anything they hit. Anxious for her safety, she vows to find her way to a safe locatio…
Description Bessie hears that an extraordinary meteor shower is coming; reports say that these meteors will crash into earth and destroy anything they hit. Anxious for her safety, she vows to find her way to a safe location (one that is never destroy…
Description Bessie hears that an extraordinary meteor shower is coming; reports say that these meteors will crash into earth and destroy anything they hit. Anxious for her safety, she vows to find her way to a safe location (one that is never destroy…
贝茜听到一场非同寻常的流星雨( meteor shower)即将来临;有报道称这些流星将撞击地球并摧毁它们所击中的任何东西.为了安全起见(Anxious for her safety), ,她发誓(vows)要找到一条路到安全的地方(一个从未被流星摧毁的地方).目前,她在坐标轴(coordinate plane)的原点上,想要移动到一个新的,更安全的位置,同时在路上避免流星砸到. 报道说,在时间Ti(0≤Ti≤1000)的情况下,M(1 ≤ M ≤ 50,000) 颗流行将会坠落(strike)…
Meteor Shower Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 12642 Accepted: 3414 Description Bessie hears that an extraordinary meteor shower is coming; reports say that these meteors will crash into earth and destroy anything they h…
Meteor Shower Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 12816 Accepted: 3451 Description Bessie hears that an extraordinary meteor shower is coming; reports say that these meteors will crash into earth and destroy anything they h…
求LIS , 然后用 n 减去即为answer ---------------------------------------------------------------------------- #include<cstdio> #include<cstring> #include<algorithm> #include<iostream> #define rep( i , n ) for( int i = 0 ; i < n ; ++i…
