zoukankan      html  css  js  c++  java
  • Codeforces Round #394 (Div. 2) A. Dasha and Stairs 水题

    A. Dasha and Stairs

    题目连接:

    http://codeforces.com/contest/761/problem/A

    Description

    On her way to programming school tiger Dasha faced her first test — a huge staircase!

    The steps were numbered from one to infinity. As we know, tigers are very fond of all striped things, it is possible that it has something to do with their color. So on some interval of her way she calculated two values — the number of steps with even and odd numbers.

    You need to check whether there is an interval of steps from the l-th to the r-th (1 ≤ l ≤ r), for which values that Dasha has found are correct.

    Input

    In the only line you are given two integers a, b (0 ≤ a, b ≤ 100) — the number of even and odd steps, accordingly.

    Output

    In the only line print "YES", if the interval of steps described above exists, and "NO" otherwise.

    Sample Input

    2 3

    Sample Output

    YES

    Hint

    题意

    问你在现实生活中,存不存在一个起点和一个终点,使得里面的奇数有a个,偶数有b个。

    题解:

    1.暴力枚举

    2.abs<=1即可,然后特判掉0 0这个数据,这个答案是no

    代码

    #include<bits/stdc++.h>
    using namespace std;
    
    int main()
    {
        long long a,b;
        cin>>a>>b;
        for(int l=0;l<=1000;l++){
            for(int r=l;r<=1000;r++){
                int L=0,R=0;
                for(int k=l;k<=r;k++){
                    if(k%2==0)R++;
                    else L++;
                }
                if(L==a&&R==b){
                    cout<<"YES"<<endl;
                    return 0;
                }
            }
        }
        cout<<"NO"<<endl;
        return 0;
    }
  • 相关阅读:
    coding
    我的大学
    《活出生命的意义》读后感
    《世界是数字的》读后感
    学习进度表
    阅读《我是一只IT小小鸟有感》
    《软件工程师职业规范》心得
    软件工程第二次结对作业
    软件工程第三次作业
    软件工程第二次作业
  • 原文地址:https://www.cnblogs.com/qscqesze/p/6359964.html
Copyright © 2011-2022 走看看