[SWEA] 날짜 계산기

https://swexpertacademy.com/main/code/problem/problemDetail.do?problemLevel=2&contestProbId=AV5PnnU6AOsDFAUq&categoryId=AV5PnnU6AOsDFAUq&categoryType=CODE&problemTitle=&orderBy=FIRST_REG_DATETIME&selectCodeLang=ALL&select-1=2&pageSize=10&pageIndex=2

SW Expert Academy

import java.util.Scanner;
import java.io.FileInputStream;


class Solution
{
	public static void main(String args[]) throws Exception
	{
		Scanner sc = new Scanner(System.in);
		int T;
		T=sc.nextInt();

		for(int test_case = 1; test_case <= T; test_case++)
		{
			int beforeM = sc.nextInt(); int beforeD =sc.nextInt();
            int afterM = sc.nextInt(); int afterD =sc.nextInt();
            int sum = 1;
            if(beforeM!=afterM)
            	sum+=afterD;
            
           if(beforeM==2)
                    sum+=28-beforeD;
          else if(beforeM==1  || beforeM==3  || beforeM==5  ||beforeM==7 ||beforeM==8 ||beforeM==10 ||beforeM==12)
                    sum+=31-beforeD;
          else if(beforeM==4  || beforeM==6  || beforeM==9  || beforeM==11)
                    sum+=30-beforeD;
            
           while(beforeM+1<afterM){
               if(beforeM+1==2)
                    sum+=28;
                else if(beforeM+1==1  || beforeM+1==3  || beforeM+1==5  ||beforeM+1==7 ||beforeM+1==8 ||beforeM+1==10 ||beforeM+1==12)
                    sum+=31;
                else if(beforeM+1==4  || beforeM+1==6  || beforeM+1==9  || beforeM+1==11)
                    sum+=30;
                beforeM=beforeM+1;
            }


				System.out.println("#"+test_case+" "+ sum);
			
		}
	}
}