Java Programs - Solved 2015 ICSE Computer Science Paper

import java.util.Scanner;
class Students{
    public static void main(String args[]){
        Scanner in = new Scanner(System.in);
        System.out.print("Number of students: ");
        int n = Integer.parseInt(in.nextLine());
        int roll[] = new int[n];
        String name[] = new String[n];
        int s1[] = new int[n];
        int s2[] = new int[n];
        int s3[] = new int[n];
        for(int i = 0; i < n; i++){
            System.out.print("Name: ");
            name[i] = in.nextLine();
            System.out.print("Roll: ");
            roll[i] = Integer.parseInt(in.nextLine());
            System.out.print("Marks in subject1: ");
            s1[i] = Integer.parseInt(in.nextLine());
            System.out.print("Marks in subject2: ");
            s2[i] = Integer.parseInt(in.nextLine());
            System.out.print("Marks in sucject3: ");
            s3[i] = Integer.parseInt(in.nextLine());
            double avg = (s1[i] + s2[i] + s3[i]) / 3.0;
            if(avg >= 85)
                System.out.println("Remark: EXCELLENT");
            else if(avg >= 75)
                System.out.println("Remark: DISTINCTION");
            else if(avg >= 60)
                System.out.println("Remark: FIRST CLASS");
            else if(avg >= 40)
                System.out.println("Remark: PASS");
            else
                System.out.println("Remark: POOR");
        }
    }
}