题意:给出n*n的棋盘,白方在(1,1),黑方在(1,n)处,每一步可以上下左右对角线走,哪个先抓到另一个,则它获胜 可以画一下,发现n是奇数的时候,白方先走,无论它怎么走,黑方和它走对称的,黑方都一定能赢 n是偶数的时候,将白方走到(1,2)就变成奇数的情况,白方必胜 #include<iostream> #include<cstdio> #include<cstring> #include <cmath> #include<stack> #i…

D. Vasya and Chess   Vasya decided to learn to play chess. Classic chess doesn't seem interesting to him, so he plays his own sort of chess. The queen is the piece that captures all squares on its vertical, horizontal and diagonal lines. If the cell…

[链接] 我是链接,点我呀:) [题意] [题解] 会发现两个皇后之间如果只有奇数个位置 也就是n%2==1 那么第二个人总是赢的 因为如果white往下跑的话,black也能往下跑. 第二个人没有输的机会. 其他情况就是第一个人赢了... [代码] import java.io.*; import java.util.*; public class Main { static InputReader in; static PrintWriter out; public static void…

题意:给出三分线的值d,分别有两支队伍,如果小于等于d,得2分,如果大于d,得三分,问使得a-b最大时的a,b 一看到题目,就想当然的去二分了----啥都没分出来---55555555 后来才知道不能二分,因为随着d的增大,两个队的得分都会逐渐减少,但是两个队伍的得分的差值的单调性却不知道 是这一篇这样讲的 http://www.cnblogs.com/huangxf/p/4142760.html 然后就依次枚举d的值,维护一个最大值 #include<iostream> #include&l…

D. Vasya and Chess time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Vasya decided to learn to play chess. Classic chess doesn't seem interesting to him, so he plays his own sort of chess. T…

D. Vasya and Chess time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Vasya decided to learn to play chess. Classic chess doesn't seem interesting to him, so he plays his own sort of chess. T…

D. Vasya and Chess time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Vasya decided to learn to play chess. Classic chess doesn't seem interesting to him, so he plays his own sort of chess. T…

 Little Elephant and Chess Time Limit:2000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u Submit Status Practice CodeForces 259A Description The Little Elephant loves chess very much. One day the Little Elephant and his friend decided…

\(>Codeforces \space 493\ E.Devu\ and\ Birthday\ Celebration<\) 题目大意 : 有 \(q\) 组询问,每次有 \(n\) 小朋友和 \(m\) 个苹果,求有多少种方案,使得每个小朋友都分到一个苹果,且每个小朋友分到的苹果的数目的 \(gcd = 1\),输出答案对 \(10^9 + 7\) 取模的值 \(1 \leq n, m, q \leq 10^5\) 解题思路 : 设 \(f(n)\) 表示分苹果的方案满足 \(n | gc…

D. Weird Chess Time Limit: 1 Sec  Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/538/problem/D Description Igor has been into chess for a long time and now he is sick of the game by the ordinary rules. He is going to think of new rules of th…