import java.util.Scanner;
public class Ahmedjava {
    public static void main(String[] args) {
        int mark;
        Scanner input=new Scanner(System.in);
        System.out.println("Enter your grade:");
        mark=input.nextInt();
        if(mark>=90){
            System.out.println("A");
        }
        else if(mark>=80){
            System.out.println("B");
        }
        else if (mark>=70) {
            System.out.println("C");
        }
        else if(mark>=60){
            System.out.println("D");
        }
        else{
            System.out.println("fail");
        }
    }
}
import java.util.Scanner;
public class Mohamed {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int mark;
        System.out.println("Please Enter mark:");
        mark = input.nextInt();
        if (mark >= 90 && mark <= 100) {
            System.out.println("A");
        } else if (mark >= 80 && mark < 90) {
            System.out.println("B");
        } else if (mark >= 70 && mark < 80) {
            System.out.println("C");
        } else if (mark >= 60 && mark < 70) {
            System.out.println("D");
        } else {
            System.out.println("fail");
        }
    }
}
import java.util.Scanner;
public class Mohamed {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        boolean x = (5 > 4) || (10 < 5 * 5);
        System.out.println(x);
    }
}
import java.util.Scanner;
public class Mohamed {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int y = 1, z;
        if (y == 1) {
            z = 2;
        } else {
            z = 5;
        }
        System.out.println(z);
    }
}
import java.util.Scanner;
public class Mohamed {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int y = 1;
        int Z = y == 1 ? 2 : 5;
        System.out.println(Z);
    }
}
import java.util.Scanner;
public class Mohamed {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int y = 1;
        int Z = y == 2 ? 2 : 5;
        System.out.println(Z);
    }
}
import java.util.Scanner;
public class Mohamed {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int mark;
        mark = input.nextInt();
        String r = (mark >= 90 && mark <= 100) ? "A"
                : (mark >= 80 && mark < 90) ? "B"
                : (mark >= 70 && mark < 80) ? "C" 
                : (mark >= 60 && mark < 70) ? "D":"fail";
        System.out.println(r);
    }
}
import java.util.Scanner;
public class Mohamed {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int mark;
        mark = input.nextInt();
        String r = (mark >= 90 && mark <= 100) ? "A"
                : (mark >= 80 && mark < 90) ? "B"
                : (mark >= 70 && mark < 80) ? "C" 
                : (mark >= 60 && mark < 70) ? "D" : "fail";
        System.out.println(r);
        System.out.println(r instanceof String);
    }
}
import java.util.Scanner;
public class Mohamed {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int mark;
        mark = input.nextInt();
        String r = (mark >= 90 && mark <= 100) ? "A"
                 : (mark >= 80 && mark < 90) ? "B"
                 : (mark >= 70 && mark < 80) ? "C" 
                 : (mark >= 60 && mark < 70) ? "D" : "fail";
        System.out.println(r);
        System.out.println(r instanceof String);// test data type
        System.out.println(input instanceof Scanner);//test data type
    }
}