using System;
using System.Globalization;
public class SamplesGregorianCalendar {
public static void Main() {
GregorianCalendar myCal = new GregorianCalendar();
for ( int y = 2001; y <= 2010; y++ )
Console.Write(myCal.GetDaysInMonth( y, 2, GregorianCalendar.CurrentEra ) );
for ( int i = 0; i < myCal.Eras.Length; i++ ) {
Console.Write( myCal.Eras[i] );
for ( int y = 2001; y <= 2010; y++ )
Console.WriteLine(myCal.GetDaysInMonth( y, 2, myCal.Eras[i] ) );
}
}
}