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  • A

                                                                                                           A - Who's in the Middle
                                                       Time Limit:1000MS Memory Limit:65536KB 64bit IO Format:%I64d & %I64u
     Description
                      FJ is surveying his herd to find the most average cow. He wants to know how much milk this 'median' cow gives: half of the cows give as much or more than the median; half give as much or less. 

                       Given an odd number of cows N (1 <= N < 10,000) and their milk output (1..1,000,000), find the median amount of milk given such that at least half the cows give the same amount of milk or more and at least half give the same or less.
     Input
                    * Line 1: A single integer N

                   * Lines 2..N+1: Each line contains a single integer that is the milk output of one cow.
     Output
                   * Line 1: A single integer that is the median milk output.
    Sample Input
    5
    2
    4
    1
    3
    5


    Sample Output
    3


    Hint
    INPUT DETAILS:

    Five cows with milk outputs of 1..5

    OUTPUT DETAILS:

    1 and 2 are below 3; 4 and 5 are above 3.

    #include<stdio.h>
    #include<string.h>
    int a[1000000];
    int main()
    {
        __int64 N;
        int  i, j, k, t;
        scanf("%lld", &N);
        for(i=0; i<N; i++)
        {
            scanf("%d", &a[i]);
        }
    
        for(i=0; i<N-1; i++)
            for(j=i+1; j<N; j++)
        {
            if(a[i]>a[j])
            {
                t = a[i];
                a[i] = a[j];
                a[j] = t;
            }
        }
        k = N/2;
        printf("%d
    ", a[k]);
        return 0;
    }

    每天训练发现我比别人做的好慢,但是理解的更深刻,如果一开始学一个新知识点就搜模板,那么这样的人是走不远的,毕业之后带走的只有思维,什么荣誉,奖杯都已经不重要了。
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  • 原文地址:https://www.cnblogs.com/6bing/p/3931307.html
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