J07047_QuanLyKhachSan.java

//B21DCCN441
import java.util.*;
import java.math.*;
import java.io.*;

class Khach {

    public String mkh, tkh, mp, in, out;
    public int snlt;
    public float soTienPhaiTra, donGia, phiPhucVu;

    public Khach(int id, String name, String room, String dayin, String dayout) {
        if (id < 10) {
            mkh = "KH0" + String.valueOf(id);
        } else {
            mkh = "KH" + String.valueOf(id);
        }
        this.tkh = name;
        this.mp = room;
        this.in = dayin;
        this.out = dayout;
        this.snlt = dis(this.in, this.out);

    }

    public int dayOfYear(int y) {
        if (y % 400 == 0 || (y % 4 == 0 && y % 100 != 0)) {
            return 366;
        } else {
            return 365;
        }
    }

    public int dayOfMonth(int m, int y) {
        if (m == 1 || m == 3 || m == 5 || m == 7 || m == 8 || m == 10 || m == 12) {
            return 31;
        } else if (m != 2) {
            return 30;
        } else if (y % 400 == 0 || (y % 4 == 0 && y % 100 != 0)) {
            return 29;
        } else {
            return 28;
        }
    }

    public int dayth(int d, int m, int y) {
        if (m == 1) {
            return d;
        }
        int day = 0;
        for (int i = 1; i < m; i++) {
            day += dayOfMonth(i, y);
        }
        return day + d;
    }

    public int dis(String a, String b) {
        int d1 = Integer.valueOf(a.substring(0, 2));
        int d2 = Integer.valueOf(b.substring(0, 2));
        int m1 = Integer.valueOf(a.substring(3, 5));
        int m2 = Integer.valueOf(b.substring(3, 5));
        int y1 = Integer.valueOf(a.substring(6, 10));
        int y2 = Integer.valueOf(b.substring(6, 10));
        int distance = 0;
        if (y1 != y2) {
            for (int i = y1 + 1; i < y2; i++) {
                distance += dayOfYear(i);
            }
            distance += dayth(d2, m2, y2);
            distance += dayOfYear(y1) - dayth(d1, m1, y1);
            return distance;
        }
        return dayth(d2, m2, y2) - dayth(d1, m1, y1);
    }

    public void setDonGia(Float s) {
        this.donGia = s;
    }

    public void setPhiPhucVu(Float s) {
        this.phiPhucVu = s;
    }

    public void tinhTien() {
        int k = snlt;
        if (k == 0) {
            k = 1;
        }
        this.soTienPhaiTra = (float) (this.donGia * k * (1.0 + this.phiPhucVu));
        if (k >= 30) {
            this.soTienPhaiTra *= 0.94;
        } else if (k >= 20) {
            this.soTienPhaiTra *= 0.96;
        } else if (k >= 10) {
            this.soTienPhaiTra *= 0.98;
        }
    }

    public void display() {
        System.out.printf("%s %s %s %d %.2f\n", this.mkh, this.tkh, this.mp, this.snlt, this.soTienPhaiTra);
    }

}

public class J07047_QuanLyKhachSan {

    public static void main(String[] args) throws FileNotFoundException {
        Scanner sc = new Scanner(new File("DATA.in"));
        int m = sc.nextInt();
        sc.nextLine();
        TreeMap<String, Float> donGia = new TreeMap<>();
        TreeMap<String, Float> PhiPv = new TreeMap<>();
        while (m-- > 0) {
            String s = sc.nextLine();
            String idPhong = s.split(" ")[0];
            Float Dongia = Float.valueOf(s.split(" ")[2]);
            Float PhiPhucVu = Float.valueOf(s.split(" ")[3]);
            donGia.put(idPhong, Dongia);
            PhiPv.put(idPhong, PhiPhucVu);
        }
        int n = sc.nextInt();
        sc.nextLine();
        ArrayList<Khach> a = new ArrayList<>();
        for (int i = 1; i <= n; i++) {
            a.add(new Khach(i, sc.nextLine(), sc.nextLine(), sc.nextLine(), sc.nextLine()));
        }
        for (Khach k : a) {
            String id = k.mp.substring(2, 3);
            k.setDonGia(donGia.get(id));
            k.setPhiPhucVu(PhiPv.get(id));
            k.tinhTien();
        }
        Collections.sort(a, new Comparator<Khach>() {
            @Override
            public int compare(Khach t, Khach t1) {
                return t.snlt > t1.snlt ? -1 : 1;
            }
        });
        for (Khach k : a) {
            k.display();
        }

    }
}