using System;
public class Program
{
public static void Main()
/*
int x=1;
while (x <=50)
Console.Write(x);
Console.Write("-");
x = x + 1;
}
*/
int x=50;
while (x <=150)
while (x <=200)
int x=-50;
while (x <=0)
int x=2;
while (x <=100)
x = x + 2;