using System;
public class Program
{
public static void Main()
for(int i = 0; i < 15; i++)
Console.WriteLine("Hello World");
}
static int Fibonacci(int n)
int a = 0;
int b = 1;
for(int i = 0; i < n; i++)
int temp = a;
a = b;
b = temp + b;
return a;