import java.util.*;

public class StudentMarks{

double totalMarks;
String grade;

public void setTotalMarks(double totalMarks){
this.totalMarks=totalMarks;
}
public double getTotalMarks(){
return totalMarks;
}
public void setGrade(String grade){
this.grade=grade;
}
public String getGrade(){
return grade;
}
public static void main(String[]args){
Scanner input=new Scanner(System.in);
System.out.print("Enter number of students: ");
int num=input.nextInt();
StudentMarks data[]=new StudentMarks[num];
for (int i=0; i<data.length; i++) {
System.out.println("Enter marks");
double marks=input.nextDouble();
data[i] = new StudentMarks();
data[i].setTotalMarks(marks);
if(marks<40){
data[i].setGrade("FAIL");
}
if(marks>=40&&marks<=50){
data[i].setGrade("E");
}
if(marks>50&&marks<=59){
data[i].setGrade("D");
}
if(marks>60&&marks<=70){
data[i].setGrade("C");
}
if(marks>70&&marks<=85){
data[i].setGrade("B");
}
if(marks>85&&marks<=95){
data[i].setGrade("A");
}
if(marks>95){
data[i].setGrade("A+");
}

}
int count1=0,count2=0,count3=0,count4=0;
for(int i=0;i<num;i++){
StudentMarks show = data[i];
String g = show.getGrade();
if(g.equals("A+")){
    count1++;
}
if(g.equals("A")){
    count2++;
}
if(g.equals("D")){
    count3++;
}
if(g.equals("E")){
    count4++;
}
}
System.out.println("Number of student getting A and A+ grade: "+(count1+count2));
System.out.println("Number of student getting D and E grade: "+(count3+count4));


}
}