import java.util.Scanner;
 
class Main{
    public static void main(String[] args) {
        int[] year = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
        Scanner scanner = new Scanner(System.in);
        System.out.print("月を入力してください > ");
        int month = scanner.nextInt();
        try {
            System.out.println(month + "月の日数は" + year[month - 1] + "日です");
        } catch (ArrayIndexOutOfBoundsException e) {
            System.out.println("入力エラーです");
        }
    }
}
 

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