题目连接 题意: 给n*m的0/1矩阵,q次操作,每次有两种:1)将x,y位置值翻转 2)计算以(x,y)为边界的矩形的面积最大值 (1 ≤ n, m, q ≤ 1000) 分析: 考虑以(x,y)为下边界的情况,h=(x,y)上边最多的连续1的个数.那么递减的枚举,对于当前hx,仅仅须要看两側能到达的最远距离,使得h(x,ty)不大于h就可以.之后的枚举得到的两側距离大于等于之前的,所以继续之前的两側距离继续枚举就可以. const int maxn = 1100; int n, m, q;…
题目链接: B. Nanami's Digital Board time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Nanami is an expert at playing games. This day, Nanami's good friend Hajime invited her to watch a game of ba…
B. Nanami's Digital Board 题目连接: http://www.codeforces.com/contest/434/problem/B Description Nanami is an expert at playing games. This day, Nanami's good friend Hajime invited her to watch a game of baseball. Unwilling as she was, she followed him to…
Eddy's digital Roots Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 4436 Accepted Submission(s): 2505 Problem Description The digital root of a positive integer is found by summing the digi…
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 5238 Accepted Submission(s): 2925 Problem Description The digital root of a positive integer is found by summing the digits of the integer. If…
比赛链接:http://codeforces.com/contest/433 A. Kitahara Haruki's Gift time limit per test:1 second memory limit per test:256 megabytes Kitahara Haruki has bought n apples for Touma Kazusa and Ogiso Setsuna. Now he wants to divide all the apples between th…