http://codeforces.com/problemset/problem/451/C

A - Predict Outcome of the Game

Time Limit:2000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u

Description

There are n games in a football tournament. Three teams are participating in it. Currently k games had already been played.

You are an avid football fan, but recently you missed the whole k games. Fortunately, you remember a guess of your friend for these kgames. Your friend did not tell exact number of wins of each team, instead he thought that absolute difference between number of wins of first and second team will be d1 and that of between second and third team will be d2.

You don't want any of team win the tournament, that is each team should have the same number of wins after n games. That's why you want to know: does there exist a valid tournament satisfying the friend's guess such that no team will win this tournament?

Note that outcome of a match can not be a draw, it has to be either win or loss.

Input

The first line of the input contains a single integer corresponding to number of test cases t(1 ≤ t ≤ 105).

Each of the next t lines will contain four space-separated integers n, k, d1, d2(1 ≤ n ≤ 1012; 0 ≤ k ≤ n; 0 ≤ d1, d2 ≤ k) — data for the current test case.

Output

For each test case, output a single line containing either "yes" if it is possible to have no winner of tournament, or "no" otherwise (without quotes).

Sample Input

Input
5
3 0 0 0
3 3 0 0
6 4 1 0
6 3 3 0
3 3 3 2
Output
yes
yes
yes
no
no

Hint

Sample 1. There has not been any match up to now (k = 0, d1 = 0, d2 = 0). If there will be three matches (1-2, 2-3, 3-1) and each team wins once, then at the end each team will have 1 win.

Sample 2. You missed all the games (k = 3). As d1 = 0 and d2 = 0, and there is a way to play three games with no winner of tournament (described in the previous sample), the answer is "yes".

Sample 3. You missed 4 matches, and d1 = 1, d2 = 0. These four matches can be: 1-2 (win 2), 1-3 (win 3), 1-2 (win 1), 1-3 (win 1). Currently the first team has 2 wins, the second team has 1 win, the third team has 1 win. Two remaining matches can be: 1-2 (win 2), 1-3 (win 3). In the end all the teams have equal number of wins (2 wins).

题目大意:题意有点坑,就是三支球队有n场比赛,错过了k场,即这k场比赛不知道输赢,只知道第一支球队和第二支球队胜局情况差d1,第二和第三差d2,问说最后有没有可能三支队伍胜局数相同。

思路:就是分类讨论。只需要讨论四种情况:如d1=3,d2=2,则三队的情况可能是(5,2,0),(3,0,2),(0,3,5),(0,3,1)。比如(5,2,0),这里表明至少已进行了7场,比较7是否比k小,且是否(k-7)是3的倍数,因为(6,3,1)等价于(5,2,0);然后需要考虑至少还需要进行的场数,至少再进行8场才能三队持平,比较8是否比(n-k)大,且(n-k-8)是否是3的倍数。

代码:

 #include <fstream>
#include <iostream>
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <cmath>
#include <cstdlib> using namespace std; #define PI acos(-1.0)
#define EPS 1e-10
#define lll __int64
#define ll long long
#define INF 0x7fffffff lll n,k,d1,d2,d11,d22; inline bool Check(lll x,lll y); int main(){
//freopen("D:\\input.in","r",stdin);
//freopen("D:\\output.out","w",stdout);
int T;
scanf("%d",&T);
while(T--){
scanf("%I64d %I64d %I64d %I64d",&n,&k,&d1,&d2);
if(n%==){
lll j1,j2,j3,j4;
j1=d1+(d2<<);
j2=(d1<<)+d2;
j3=d1+d2;
j4=(max(d1,d2)<<)-min(d1,d2);
if((Check(j1,k)&&Check(j2,n-k))||(Check(j1,n-k)&&Check(j2,k))||(Check(j3,k)&&Check(j4,n-k))||(Check(j3,n-k)&&Check(j4,k))) puts("yes");
else puts("no");
}else puts("no");
}
return ;
}
inline bool Check(lll x,lll y){
return x<=y&&(y-x)%==;
}

cf451C-Predict Outcome of the Game的更多相关文章

  1. CF451C Predict Outcome of the Game 水题

    Codeforces Round #258 (Div. 2) Predict Outcome of the Game C. Predict Outcome of the Game time limit ...

  2. CodeForces 451C Predict Outcome of the Game

    Predict Outcome of the Game Time Limit:2000MS     Memory Limit:262144KB     64bit IO Format:%I64d &a ...

  3. Codeforces Round #258 (Div. 2) C. Predict Outcome of the Game 水题

    C. Predict Outcome of the Game 题目连接: http://codeforces.com/contest/451/problem/C Description There a ...

  4. codeforces 258div2C Predict Outcome of the Game

    题目链接:http://codeforces.com/contest/451/problem/C 解题报告:三个球队之间一共有n场比赛,现在已经进行了k场,不知道每个球队的胜场是多少,如三个球队的胜场 ...

  5. codeforces 451C. Predict Outcome of the Game 解题报告

    题目链接:http://codeforces.com/problemset/problem/451/C 题目意思:有3支球队(假设编号为1.2.3),总共要打 n 场比赛,已知已经错过这n场比赛中的 ...

  6. Codeforces Round #258 (Div. 2/C)/Codeforces451C_Predict Outcome of the Game(枚举)

    解题报告 http://blog.csdn.net/juncoder/article/details/38102391 题意: n场比赛当中k场是没看过的,对于这k场比赛,a,b,c三队赢的场次的关系 ...

  7. Codeforces Round #258 (Div. 2)

    A - Game With Sticks 题目的意思: n个水平条,m个竖直条,组成网格,每次删除交点所在的行和列,两个人轮流删除,直到最后没有交点为止,最后不能再删除的人将输掉 解题思路: 每次删除 ...

  8. Support Vector Machine (3) : 再谈泛化误差(Generalization Error)

    目录 Support Vector Machine (1) : 简单SVM原理 Support Vector Machine (2) : Sequential Minimal Optimization ...

  9. Codeforces Round #258 (Div. 2)(A,B,C,D)

    题目链接 A. Game With Sticks time limit per test:1 secondmemory limit per test:256 megabytesinput:standa ...

随机推荐

  1. 杂项:.NET Framework

    ylbtech-杂项:.NET Framework Microsoft .NET Framework是用于Windows的新托管代码编程模型.它将强大的功能与新技术结合起来,用于构建具有视觉上引人注目 ...

  2. PHP实现微信申请退款(证书权限必须设为可执行)

    前期准备: 当然是搞定了微信支付,不然怎么退款,这次还是使用官方的demo.当然网上可能也有很多大神自己重写和封装了demo,或许更加好用简洁,但是我还是不提倡用,原因如下: (1)可能功能不全,或许 ...

  3. mysql存储过程中遍历数组字符串的两种方式

    第一种:多次使用substring_index()的方法 DELIMITER $$ DROP PROCEDURE IF EXISTS `array`$$ CREATE  PROCEDURE `arra ...

  4. 安装HBase(0.9)数据库

    基本知识: 1.hbase是一种基于列存储的数据库,也就是说它的一列的数据是存储在一个文件里面的,而传统的数据库存储都是一个文件存储多个行,这些行有不同的列,这些列的数据类型 不同. 2.基于HDFS ...

  5. html基础代码示例

    文档结构 <!-- 声明文档的类型 标记该文档为HTML5的文件 --> <!DOCTYPE html> <!-- 页面的根节点 --> <!-- html中 ...

  6. Noip往年题目整理

    Noip往年题目整理 张炳琪 一.历年题目 按时间倒序排序 年份 T1知识点 T2知识点 T3知识点 得分 总体 2016day1 模拟 Lca,树上差分 期望dp 144 挺难的一套题目,偏思维难度 ...

  7. ajax控制页面跳转

    一开始我是这么写的,一直报错,跳转路径解析不了,显示为问号: 前台html: <form> <table style="margin: 200px auto;"& ...

  8. Python - Django - App 的概念

    App 方便我们在一个大的项目中,管理实现不同的业务功能 创建 App: 命令行: python manage.py startapp app名 使用 Pycharm 创建: 文件 -> 新建项 ...

  9. 解决Visual Studio “无法导入以下密钥文件”的错误

    错误1无法导入以下密钥文件: Common.pfx.该密钥文件可能受密码保护.若要更正此问题,请尝试再次导入证书,或手动将证书安装到具有以下密钥容器名称的强名称 CSP: VS_KEY_ 1110Co ...

  10. python3解析XML文件

    软硬件环境 Ubuntu 15.10 32bit Python 3.5.1 PyQt 5.5.1 前言 Python解析XML的方法挺多,本文主要是利用ElementTree来完成. 实例讲解 解析X ...