PTA 乙级 1053 住房空置率

代码实现：

#include<stdio.h>

int main()
{
	int N, D;
	double e, mayemp = 0, emp = 0;

	scanf("%d %lf %d", &N, &e, &D);
	for (int i = 0; i < N; i++)
	{
		int K, cnt_less = 0, cnt_more = 0;
		scanf("%d", &K);
		double *ele = (double*)malloc(sizeof(double)*K);
		for (int j = 0; j < K; j++)
		{
			scanf("%lf", &ele[j]);
			if (ele[j] < e)cnt_less++;
			else if (ele[j] > e)cnt_more++;
		}
		if ((double)cnt_less > (double)K / 2 && K <= D)mayemp++;
		else if ((double)cnt_less > (double)K / 2 && K > D)emp++;
	}
	printf("%.1f%% %.1f%%", mayemp / N * 100, emp / N * 100);

	return 0;
}