Sum of squares of numbers from 1 to N

C# Easy loops

Task «Sum of squares of numbers from 1 to N»

Write a program that reads a positive integer N and calculates the sum of squares of all integers from 1 to N inclusive. Use a for loop. It is guaranteed that N does not exceed 1000.

Input Format

One positive integer N.

Output Format

One integer — the sum of squares of numbers from 1 to N.

Examples

Example 1

INPUT

5
12 34 21 43 15

OUTPUT

55

Example 2

INPUT

1

OUTPUT

1

Example 3

INPUT

3
5 10 15

OUTPUT

14

main.cs