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using System;
class HelloWorld {
static void Main() {
double d = Math.Ceiling(3.4);
Console.WriteLine("d: {0}",d);
d = Math.Ceiling(3.9);
Console.WriteLine("d: {0}", d);
d = Math.Floor(3.4);
Console.WriteLine("d: {0}", d);
d = Math.Floor(3.9);
Console.WriteLine("d: {0}", d);
d = Math.Round(3.3);
Console.WriteLine("d: {0}", d);
d = Math.Round(3.9);
Console.WriteLine("d: {0}", d);
d = Math.Round(3.5);
Console.WriteLine("d: {0}", d);
}
}
