#### Question:-

Nila uses pencils to write at school and at home. When she was in her 1st standard, her parents bought her one pencil. In her 2nd standard, she needed 5 pencils, and in 3rd standard, she needed 14 pencils and so on. How many pencils does she get from the provided standard?

**Note : If the input given is not between 1 to 12 then the output should be “Invalid Standard”**

**Sample Input 1:**

Enter the standard: 4**Sample Output 1:**

Nila gets 30 pencils

**Sample Input 2:**

Enter the standard: 5**Sample Output 2:**

Nila gets 55 pencils

**Sample Input 3:**

Enter the standard:14**Sample Output 3:**

Invalid Standard

#### Code:-

import java.util.Scanner; public class Count { public static void main (String[] args) { int penc=0; Scanner sc=new Scanner(System.in); System.out.println("Enter the standard"); int stan=sc.nextInt(); if(stan<1||stan>12) { System.out.println("Invalid Standard"); } else { for(int i=1;i<=stan;i++) { penc+=i*i; } System.out.println("Nila gets "+penc+" pencils"); } } }

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