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  • HDU 1391:Number Steps

    Number Steps

    Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)
    Total Submission(s): 4727    Accepted Submission(s): 2884


    Problem Description
    Starting from point (0,0) on a plane, we have written all non-negative integers 0, 1, 2,... as shown in the figure. For example, 1, 2, and 3 has been written at points (1,1), (2,0), and (3, 1) respectively and this pattern has continued.



    You are to write a program that reads the coordinates of a point (x, y), and writes the number (if any) that has been written at that point. (x, y) coordinates in the input are in the range 0...5000.
     

    Input
    The first line of the input is N, the number of test cases for this problem. In each of the N following lines, there is x, and y representing the coordinates (x, y) of a point.
     

    Output
    For each point in the input, write the number written at that point or write No Number if there is none.
     

    Sample Input
    3 4 2 6 6 3 4
     

    Sample Output
    6 12 No Number
     

    Source
     

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    你  离  开  了  ,  我  的  世  界  里  只  剩  下  雨  。  。  。

    #include<iostream>
    using namespace std;
    int main()
    {
        int n;
        cin>>n;
        while(n--)
        {
            int a,b;
            cin>>a>>b;
            if(a==b||a-b==2)
            {
                if(a==b)
                {
                    if(a&1)cout<<2*a-1<<endl;
                    else cout<<2*a<<endl;
                }
                else
                {
                    if(b&1)cout<<2*a-3<<endl;
                    else cout<<2*a-2<<endl;
                }
            }
            else cout<<"No Number"<<endl;
        }
        return 0;
    }
    

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  • 原文地址:https://www.cnblogs.com/im0qianqian/p/5989574.html
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