using System;
public class Program
{
public static void Main()
Console.WriteLine("請輸入年份:");
int year = int.Parse(Console.ReadLine());
if((year%4 == 0 && year%100 != 0) || (year%400 == 0))
Console.WriteLine("{0}是閏年",year);
}
else
Console.WriteLine("{0}是平年",year);