1053 住房空置率 (20 分)

// 1053 住房空置率 (20 分).cpp : 此文件包含 "main" 函数。程序执行将在此处开始并结束。
//

#include <iostream>
using namespace std;
int main()
{
    int N, D;
    double e, in;
    cin >> N >> e >> D;
    float num_ke = 0, num_kong = 0;
    int i = 0, j = 0, count = 0;
    int tmp;
    for (; i < N; i++) {
        cin >> tmp;
        for (; j < tmp; j++) {
            cin >> in;
            if (in < e)
                count++;
        }
        if (tmp <= D) {
            //可能空置
            if (count > tmp / 2) num_ke++;
        }
        else if (tmp > D) {
            //空置
            if (count > tmp / 2) num_kong++;
        }
        count = 0;
        j = 0;
    }
    float a = num_ke / N * 100;
    float b = num_kong / N * 100;
    printf("%.1f\%% %.1f\%%", a, b);
}

printf("%.1f\%% %.1f\%%", a, b);