HDU ACM 11 2015 偶数求和

#include <iostream>
using namespace std;
int main()
{
    int n, m, i, j = 0, s = 0, sum = 0, average;
    while (cin >> n >> m && n <= 100)
    {
        for (i = 0; i < n; i++)
        {
            s += 2;
            sum += s;
            j++;
            if (j == m && i < n - 1)
            {
				average = sum/m;
				printf("%d ", average);
				j = 0;
                sum = 0;
            }
			else if (j == m && i == n - 1)
			{
				average = sum/m;
				printf("%d", average);
				j = 0;
				sum = 0;
			}
        }

        if (n%m == 0)
        {
			printf("%\n");
            s = 0;
        }

        if (j < m && i > (n/m*m))
            {
                average = sum/(n%m);
				printf("%d\n", average);
                j = 0;
                sum = 0;
                s = 0;
            }
    }
    return 0;
}