백준 1308

package Cho;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Calendar;
import java.util.StringTokenizer;

public class Main1308 {

	public static void main(String[] args) throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st = new StringTokenizer(br.readLine());
		int startYear =  Integer.parseInt(st.nextToken());
		int startMonth = Integer.parseInt(st.nextToken());
		int startDay = Integer.parseInt(st.nextToken());
		
		st = new StringTokenizer(br.readLine());
		int endYear =  Integer.parseInt(st.nextToken());
		int endMonth = Integer.parseInt(st.nextToken());
		int endDay = Integer.parseInt(st.nextToken());

		if(startYear+1000 < endYear || startYear+1000 == endYear && startMonth<endMonth
				||startYear+1000==endYear && startMonth==endMonth && startDay<=endDay){
			System.out.println("gg");
		}else{
			int dDay = 0;
			while(true){
				startDay++;
				dDay++;
				
				if(startDay > 31 && (startMonth == 1 || startMonth == 3 || startMonth == 5 || startMonth ==7||
					startMonth == 8 || startMonth == 10 || startMonth == 12 )){
					startMonth++;
					startDay = 1;
				}else if( startDay > 30 && (startMonth == 4 || startMonth == 6 || startMonth == 9 ||
						startMonth == 11)){
					startMonth++;
					startDay = 1;
				}else if(startDay > 29 &&startMonth == 2 && check(startYear)){
					startMonth++;
					startDay = 1;
				}else if(startDay > 28 &&startMonth == 2 && !check(startYear)) {
					startMonth++;
					startDay = 1;
				}
	
				if (startMonth > 12) {
					startYear++;
					startMonth = 1;
				}
	
				if(startYear == endYear && startMonth == endMonth && startDay == endDay){
					System.out.println("D-"+dDay);
					break;
				}

				
			}
			
		}	

	}

	public static boolean check(int year) { // 윤년

		if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
			return true;
		}
		return false;
	}

}