C. New Year and Domino   They say "years are like dominoes, tumbling one after the other". But would a year fit into a grid? I don't think so. Limak is a little polar bear who loves to play. He has recently got a rectangular grid with h rows and…

C. New Year and Domino time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output They say "years are like dominoes, tumbling one after the other". But would a year fit into a grid? I don't thin…

C. New Year and Domino 题目连接: http://www.codeforces.com/contest/611/problem/C Description They say "years are like dominoes, tumbling one after the other". But would a year fit into a grid? I don't think so. Limak is a little polar bear who loves…

题意:计算给定矩形面积(r1,c1),(r2,c2)内长度为2的有多少个?向右或向下计算. 思路:预处理字符.分别向右和向下处理.注意边界情况,可能算多了.用容斥原理计算长度为二的单位. #include<iostream> #include<string> #include<algorithm> #include<cstdlib> #include<cstdio> #include<set> #include<map>…

题目 题意:给你一个n*m由.和#组成的矩阵,.代表可以放,#代表不可以,问在左上角(px,py)到(右下角qx,qy)这样的一个矩阵中,放下一个长度为2宽度为1的牌有多少种放法: #include <iostream> #include <iostream> #include <cstdio> #include <cstring> #include <cstdlib> #include <cmath> #include <ve…

题目描述: They say "years are like dominoes, tumbling one after the other". But would a year fit into a grid? I don't think so. Limak is a little polar bear who loves to play. He has recently got a rectangular grid with h rows and w columns. Each ce…

题目大概说给一个n*m个格子,格子'.'表示可以放东西,多次询问矩形区域(x1,y1)-(x2,y2)有几种放一张1*2的骨牌的方案数. 分别考虑横着竖着放,预处理出二维的前缀和,即sum[x][y]表示(1,1)-(x,y)的横着或者竖着放的方案数,然后对于每一个询问就拆成几个前缀和容斥一下.. 细节要注意..骨牌是1*2的.. #include<cstdio> #include<cstring> using namespace std; ][]; ][],vsum[][]; i…

由于二维条码具有储存量大.保密性高.追踪性高.抗损性强.备援性大.成本便宜等特性,其应用 渐趋广泛,因此二维码的制作对于CODESOFT条码设计软件的用户来讲可谓司空见惯.我们最常见的二维码要数QR码制了,那刚接触CODESOFT 2015条码软件的小伙伴,可能还不是很清楚如何在CODESOFT 2015生成二维码.本文,小编就为大家介绍下在CODESOFT 2015生成二维码的具体操作方法. 查看更多内容请直接前往:http://www.codesoftchina.com/faq/shengc…

D. New Year and Ancient Prophecy time limit per test 2.5 seconds memory limit per test 512 megabytes input standard input output standard output Limak is a little polar bear. In the snow he found a scroll with the ancient prophecy. Limak doesn't know…

B. New Year and Old Property   The year 2015 is almost over. Limak is a little polar bear. He has recently learnt about the binary system. He noticed that the passing year has exactly one zero in its representation in the binary system — 201510 = 111…