• HDU 1017 直接暴力。


    C - 3
    Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u

    Description

    Given two integers n and m, count the number of pairs of integers (a,b) such that 0 < a < b < n and (a^2+b^2 +m)/(ab) is an integer. 

    This problem contains multiple test cases! 

    The first line of a multiple input is an integer N, then a blank line followed by N input blocks. Each input block is in the format indicated in the problem description. There is a blank line between input blocks. 

    The output format consists of N output blocks. There is a blank line between output blocks. 

    Input

    You will be given a number of cases in the input. Each case is specified by a line containing the integers n and m. The end of input is indicated by a case in which n = m = 0. You may assume that 0 < n <= 100. 

    Output

    For each case, print the case number as well as the number of pairs (a,b) satisfying the given property. Print the output for each case on one line in the format as shown below. 

    Sample Input

    1
    
    10 1
    20 3
    30 4
    0 0

    Sample Output

    Case 1: 2
    Case 2: 4
    Case 3: 5


    代码:

    #include<stdio.h>
    #include<string.h>
    #include<math.h>
    
    #define N 110
    
    
    int main()
    {
        int i, j, t, n, m, f = 0;
    
        scanf("%d", &t);
    
        while(t--)
        {
            int k = 1;
    
            if(f == 1)
                printf("
    ");
    
            while(scanf("%d%d", &n, &m), n+m)
            {
                int ans=0;
    
                for(i = 1; i < n; i++)
                {
                    for(j = 1; j < n; j++)
                    {
                        if((i*i+j*j+m) % (i*j) == 0 && (i < j))
                            ans++;
                    }
    
                }
                printf("Case %d: %d
    ", k++,ans);
            }
    
            f = 1;
        }
        return 0;
    }
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  • 原文地址:https://www.cnblogs.com/dll6/p/5777158.html
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