Сор по информатике 7 класс за 2 четверть очень

Import java.util.*;
import java.io.*;
import java.lang.*;

class Program {
    public static void main(String[] args) {
        Scanner Scan = new Scanner(System.in);
        System.out.print("A = ");
        int A = Scan.nextInt();
        System.out.print("B = ");
        int B = Scan.nextInt();
        System.out.print("N = ");
        int N = Scan.nextInt();
        double R = 0;
        switch(N) {
            case 1: R = A+B;
                break;
            case 2: R = A-B;
                break;
            case 3: R = A*B;
                break;
            case 4: R = A/B;
                break;
        }
        System.out.println(R);
    }
}

Import java.util.*;
import java.io.*;
import java.lang.*;

class Program {
    public static void main(String[] args) {
        
        Scanner Scan = new Scanner(System.in);
        System.out.print("A = ");
        int A = Scan.nextInt();
        System.out.print("B = ");
        int B = Scan.nextInt();
        System.out.print("C = ");
        int C = Scan.nextInt();
        double kp = 0,ko = 0;
        
        if (A > 0) kp++;
        else if (A < 0)ko++;
        if (B > 0) kp++;
        else if (B < 0)ko++;
        if (C > 0) kp++;
        else if (C < 0)ko++;
        
        System.out.println("kp(>0) = "+kp);
        System.out.print("ko(<0) = "+ko);
    }
}