Answer:
import java.util.Scanner;
public class LabProgram {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
String inputMonth = sc.next();
int inputDay = sc.nextInt();
if (inputMonth.equals("January") && inputDay >= 1 && inputDay <= 31)
System.out.println("winter");
else if (inputMonth.equals("February") && inputDay >= 1 && inputDay <= 29)
System.out.println("winter");
else if (inputMonth.equals("April") && inputDay >= 1 && inputDay <= 30)
System.out.println("spring");
else if (inputMonth.equals("May") && inputDay >= 1 && inputDay <= 30)
System.out.println("spring");
else if (inputMonth.equals("July") && inputDay >= 1 && inputDay <= 31)
System.out.println("summer");
else if (inputMonth.equals("August") && inputDay >= 1 && inputDay <= 31)
System.out.println("summer");
else if (inputMonth.equals("October") && inputDay >= 1 && inputDay <= 31)
System.out.println("autumn");
else if (inputMonth.equals("November") && inputDay >= 1 && inputDay <= 30)
System.out.println("autumn");
else if (inputMonth.equals("March") && inputDay >= 20 && inputDay <= 31)
System.out.println("spring");
else if (inputMonth.equals("June") && inputDay >= 1 && inputDay <= 20)
System.out.println("spring");
else if (inputMonth.equals("June") && inputDay >= 21 && inputDay <= 30)
System.out.println("summer");
else if (inputMonth.equals("September") && inputDay >= 1 && inputDay <= 21)
System.out.println("summer");
else if (inputMonth.equals("September") && inputDay >= 22 && inputDay <= 30)
System.out.println("autumn");
else if (inputMonth.equals("December") && inputDay >= 0 && inputDay <= 20)
System.out.println("autumn");
else if (inputMonth.equals("December") && inputDay >= 21 && inputDay <= 30)
System.out.println("winter");
else if (inputMonth.equals("March") && inputDay >= 1 && inputDay <= 19)
System.out.println("winter");
else
System.out.println("invalid");
}
}