题解 | #计算日期到天数转换#

import java.time.LocalDate;
import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int year=in.nextInt();
        int month=in.nextInt();
        int day=in.nextInt();
        LocalDate date=LocalDate.of(year,month,day);
        System.out.print(date.getDayOfYear());
    }
}