Day Number in the Year

/*
 * Problem : Process a date.
 * Input   : One line of text.
 * Output  : The day number.
 * Approach: day month year.
 * Time    : O(1)
 * Space   : O(1)
 * Java    : 8 or newer.
 */
import java.util.Scanner;

public class Main {
    // This method solves the task. It receives the input and returns the answer.
    static int solve(String s) {
        // Step 1: Read day, month and year from the line.
        String[] part = s.trim().split("\\s+");
        int day = Integer.parseInt(part[0]);
        int month = Integer.parseInt(part[1]);
        int year = Integer.parseInt(part[2]);
        // Step 2: February has 29 days in a leap year.
        boolean leap = (year % 4 == 0 && year % 100 != 0) || year % 400 == 0;
        int[] days = {31, leap ? 29 : 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
        // Step 3: Add the days of all full months before this month, then add the day of the month.
        int total = day;
        for (int i = 0; i < month - 1; i++) {
            total += days[i];
        }
        return total;
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String s = scanner.hasNextLine() ? scanner.nextLine() : "";
        System.out.println(solve(s));
    }
}