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using System;
public class Program
{
public static void Main()
long l1 = -9223372036854775808;
long l2 = 9223372036854775807;
ulong ul1 = 18223372036854775808ul;
ulong ul2 = 18223372036854775808UL;
Console.WriteLine(Int64.MaxValue);
Console.WriteLine(Int64.MinValue);
Console.WriteLine(UInt64.MaxValue);
Console.WriteLine(UInt64.MinValue);
}