zoukankan      html  css  js  c++  java
  • codeforces 651A A. Joysticks (模拟)

    A. Joysticks
    time limit per test
    1 second
    memory limit per test
    256 megabytes
    input
    standard input
    output
    standard output

    Friends are going to play console. They have two joysticks and only one charger for them. Initially first joystick is charged at a1 percent and second one is charged at a2 percent. You can connect charger to a joystick only at the beginning of each minute. In one minute joystick either discharges by 2 percent (if not connected to a charger) or charges by 1 percent (if connected to a charger).

    Game continues while both joysticks have a positive charge. Hence, if at the beginning of minute some joystick is charged by 1 percent, it has to be connected to a charger, otherwise the game stops. If some joystick completely discharges (its charge turns to 0), the game also stops.

    Determine the maximum number of minutes that game can last. It is prohibited to pause the game, i. e. at each moment both joysticks should be enabled. It is allowed for joystick to be charged by more than 100 percent.

    Input

    The first line of the input contains two positive integers a1 and a2 (1 ≤ a1, a2 ≤ 100), the initial charge level of first and second joystick respectively.

    Output

    Output the only integer, the maximum number of minutes that the game can last. Game continues until some joystick is discharged.

    Examples
    input
    3 5
    output
    6
    input
    4 4
    output
    5
    Note

    In the first sample game lasts for 6 minute by using the following algorithm:

    • at the beginning of the first minute connect first joystick to the charger, by the end of this minute first joystick is at 4%, second is at 3%;
    • continue the game without changing charger, by the end of the second minute the first joystick is at 5%, second is at 1%;
    • at the beginning of the third minute connect second joystick to the charger, after this minute the first joystick is at 3%, the second one is at 2%;
    • continue the game without changing charger, by the end of the fourth minute first joystick is at 1%, second one is at 3%;
    • at the beginning of the fifth minute connect first joystick to the charger, after this minute the first joystick is at 2%, the second one is at 1%;
    • at the beginning of the sixth minute connect second joystick to the charger, after this minute the first joystick is at 0%, the second one is at 2%.

    After that the first joystick is completely discharged and the game is stopped.

    思路:模拟,注意在n==1&&m==1时要跳出了,不然会wa;

    AC代码:

    #include <bits/stdc++.h>
    using namespace std;
    int main()
    {
        int n,m,mmin,mmax;
        scanf("%d%d",&n,&m);
        int ans=0;
        while(n>0&&m>0)
        {
            if(n==1&&m==1)break;
            if(n>m)
            {
                int a=n;
                n=m;
                m=a;
            }
            n+=1;
            m-=2;
            ans++;
        }
        printf("%d
    ",ans);
        return 0;
    }
  • 相关阅读:
    桥接模式(从多个角度对实现进行分类)
    单例模式
    组合模式(解决 树形 ,局部与整体关系)
    备忘录模式
    适配器模式
    状态模式
    StartUML建模及生成java实体代码
    JPA删除接口报错 : org.hibernate.LazyInitializationException: failed to lazily initialize a collection, could not initialize proxy
    idea创建的gradle项目没有src目录怎么办?
    idea spring源码 gradle编译失败问题
  • 原文地址:https://www.cnblogs.com/zhangchengc919/p/5252229.html
Copyright © 2011-2022 走看看