计算一年中的某天的天数

import java.util.*;
public class A 
{
     

	public static void main(String[] args) 
	{
     
		// TODO Auto-generated method stub
		Scanner in=new Scanner(System.in);
		int sum=0;
		int year=in.nextInt();
		int mouth=in.nextInt();
		int day=in.nextInt();
	    switch(mouth)
	    {
     
	    case 12:sum+=30;
	    case 11:sum+=31;
	    case 10:sum+=30;
	    case 9:sum+=31;
	    case 8:sum+=31;
	    case 7:sum+=30;
	    case 6:sum+=31;
	    case 5:sum+=30;
	    case 4:sum+=31;
	    case 3:sum+=28;
	    case 2:sum+=31;
	    case 1:sum+=day;
	    }
	    if(year%400==0||year%4==0&&year%100!=0)
		{
        sum++;
	    	System.out.println(sum);
		}
		else
		{
     
			System.out.println(sum);
		}
	    
	}

}