Educational Codeforces Round 34 A. Hungry Student Problem【枚举】
1 second
256 megabytes
standard input
standard output
Ivan's classes at the university have just finished, and now he wants to go to the local CFK cafe and eat some fried chicken.
CFK sells chicken chunks in small and large portions. A small portion contains 3 chunks; a large one — 7 chunks. Ivan wants to eat exactly x chunks. Now he wonders whether he can buy exactly this amount of chicken.
Formally, Ivan wants to know if he can choose two non-negative integers a and b in such a way that a small portions and b large ones contain exactly x chunks.
Help Ivan to answer this question for several values of x!
The first line contains one integer n (1 ≤ n ≤ 100) — the number of testcases.
The i-th of the following n lines contains one integer xi (1 ≤ xi ≤ 100) — the number of chicken chunks Ivan wants to eat.
Print n lines, in i-th line output YES if Ivan can buy exactly xi chunks. Otherwise, print NO.
2
6
5
YES
NO
In the first example Ivan can buy two small portions.
In the second example Ivan cannot buy exactly 5 chunks, since one small portion is not enough, but two small portions or one large is too much.
【分析】:刚开始以为是拓展欧几里得解不定方程(被骚操作冲昏头脑的我)···后来才发现两个for枚举就行。
【代码】:
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define oo 10000000
const int mod = 1e6;
int l,n,m;
int ans;
int main()
{
int t,f;
scanf("%d",&t);
while(t--)
{
f=;
scanf("%d",&n);
for(int i=;i<;i++)
{
for(int j=;j<;j++)
{
if(*i+*j==n)
{
f=;
break;
}
}
if(f) break;
}
//printf("%d\n",f);
if(f) puts("YES");
else puts("NO");
}
return ;
}
双重枚举
Educational Codeforces Round 34 A. Hungry Student Problem【枚举】的更多相关文章
- Educational Codeforces Round 34 (Rated for Div. 2) A B C D
Educational Codeforces Round 34 (Rated for Div. 2) A Hungry Student Problem 题目链接: http://codeforces. ...
- Educational Codeforces Round 40 F. Runner's Problem
Educational Codeforces Round 40 F. Runner's Problem 题意: 给一个$ 3 * m \(的矩阵,问从\)(2,1)$ 出发 走到 \((2,m)\) ...
- Educational Codeforces Round 34 (Rated for Div. 2)
A. Hungry Student Problem time limit per test 1 second memory limit per test 256 megabytes input sta ...
- Educational Codeforces Round 34
F - Clear The Matrix 分析 题目问将所有星变成点的花费,限制了行数(只有4行),就可以往状压DP上去靠了. \(dp[i][j]\) 表示到第 \(i\) 列时状态为 \(j\) ...
- Educational Codeforces Round 34 (Rated for Div. 2) D - Almost Difference(高精度)
D. Almost Difference Let's denote a function You are given an array a consisting of n integers. You ...
- Educational Codeforces Round 34 (Rated for Div. 2) C. Boxes Packing
C. Boxes Packing time limit per test 1 second memory limit per test 256 megabytes input standard inp ...
- Educational Codeforces Round 34 D. Almost Difference【模拟/stl-map/ long double】
D. Almost Difference time limit per test 2 seconds memory limit per test 256 megabytes input standar ...
- Educational Codeforces Round 34 C. Boxes Packing【模拟/STL-map/俄罗斯套娃】
C. Boxes Packing time limit per test 1 second memory limit per test 256 megabytes input standard inp ...
- Educational Codeforces Round 34 B. The Modcrab【模拟/STL】
B. The Modcrab time limit per test 1 second memory limit per test 256 megabytes input standard input ...
随机推荐
- HDU:2594-Simpsons’ Hidden Talents
Simpsons' Hidden Talents Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Ot ...
- easyui的layout
1.浏览器自适应(即浏览器改变大小,里面的表格大小也会随之改变)要设置两个参数 (1)一般都要在body上设置class=“easyui-layout”: <body class="e ...
- Linux设置运行core dump
系统配置vim /etc/sysctl.conf kernel.core_uses_pid = kernel.core_pattern = %e-core-%p-%t sysctl -p检查有没有生效 ...
- WTForm
Flask-WTForm: from flask import Flask,render_template,request,redirect from wtforms.fields import co ...
- requireJS入门学习
前言 最近网上.群里各种随便看,随便学.暑期实习还没找到,昨天开题过了,好好学习吧.最近一直看到前端的ADM,CMD规范,然后网上各种找资料看,看了好几个牛人的博客,写的很好,然后自我感觉了解了点,介 ...
- IOS开发学习笔记029-反选、全选、删除按钮的实现
还是在上一个程序的基础上进行修改 1.反选按钮 2.全选按钮 3.删除按钮 4.其他代码优化 1.反选按钮 反选的过程就是将_deleteShops数组中得数据清空,然后将Shops中数组添加到_de ...
- 移动web前端开发小结
注意:Chrome模拟手机的显示的界面是有误差的,强烈建议一定要在真机测试自己的移动端页面(以移动端页面为准). 1.页面高度渲染错误,页面的高度是否包含了导航,(华为手机就是偏偏有底部菜单) 设置窗 ...
- ThinkPHP5 配置文件
配置目录 系统默认的配置文件目录就是应用目录(APP_PATH),也就是默认的application下面,并分为应用配置(整个应用有效)和模块配置(仅针对该模块有效). ├─application 应 ...
- hnust 土豪金的加密解密
问题 G: 土豪金的加密与解密 时间限制: 1 Sec 内存限制: 128 MB提交: 466 解决: 263[提交][状态][讨论版] 题目描述 有一位姓金的同学因为买了一部土豪金,从此 ...
- 爬虫:Scrapy3 - Items
Item 对象是种简单的容器,保存了爬取到得数据.其提供了类似于词典(dictionary-like)的API以及用于声明可用字段的简单语法. 声明Item import scrapy class P ...