using System;

public class Program

{

    public static void Main()

    {

        int a = 8, b = 10;

        int x = a * b;

        int result = 0;

        for (int i = 0, temp = 0; temp < x; temp = (int)Math.Pow(i,2))

        {

            i++;

            result = temp;

        }

        Console.WriteLine(result);

    }

}