import java.io.*;

public class ii{
	public static void main(String[] args){		
		try{
			String line = "";
			BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
			int cnt = 0;
			
			while((line=in.readLine())!=null){
			
			cnt++;
				
			if(line.startsWith("end")){
				System.exit(0);
			}
				
			if(line.length() > 11 || line.length() < 10 || line.charAt(6) != '/'){
				System.out.println("invalid");
				continue;
			}
			
			//System.out.println("AAA"+cnt);
			
			try{
				//System.out.println("0123456789");
				//System.out.println(line);
				
				int year = Integer.parseInt(line.substring(0,2));
				int month = Integer.parseInt(line.substring(2,4));
				int day = Integer.parseInt(line.substring(4,6));
				long allId = Long.parseLong(line.substring(0,6));
			
				//System.out.println("YEAR: "+year+" MONTH: "+month+" DAY: "+day+" ALLID: "+allId);
				
				//System.out.println("BBB"+cnt);
				
				if((year > 53 || year < 10) &&  line.length() == 11){
					if(year > 53)
						year = 1900 + year;
					else
						year = 2000 + year;
					int addOn = Integer.parseInt(line.substring(7,11));
					allId = (allId * 10000) + addOn;
				}else if((year < 54 && year > 19) && line.length() == 10){
					int addOn = Integer.parseInt(line.substring(7,10));
					year = 1900 + year;
					allId = (allId * 1000) + addOn;
				}else{
					System.out.println("invalid");
					continue;
				}
				
				//System.out.println("YEAR: "+year+" MONTH: "+month+" DAY: "+day+" ALLID: "+allId);
					
				//System.out.println("CCC"+cnt);
				
				System.out.println(
				!((month > 0 && month < 13) || (month > 50 && month < 63)) ? "invalid" :
				!((day > 0 && day < 32 && (month == 1 || month == 51 || month == 3 || month == 53 || month == 5 || month == 55 || month == 7 || month == 57
				|| month == 8 || month == 58 || month == 10 || month == 60 || month == 12 || month == 62)) 
				|| 
				(day > 0 && day < 31 && (month == 4
				|| month == 54 || month == 6 || month == 56 || month == 9 || month == 59 || month == 11 || month == 61))
				||
				(day == 29 && (month == 2 || month == 52) && (year%4 == 0 && (year%100 != 0 || year%400 == 0)))
				||
				(day > 0 && day < 29 && (month == 2 || month == 52)) ) ? "invalid" :
				month > 40 ? (year > 1953 && allId%11 != 0) ? "invalid" :"girl" : (year > 1953 && allId%11 != 0 )? "invalid" :"boy"
				 
				
				);
				
				//System.out.println("DDD"+cnt);
				
			}catch(Exception ex){
				System.out.println("invalid");
				//System.out.println("EEE"+cnt);
				continue;
				//ex.printStackTrace();
			}
			
			
			
			}
			
		}catch(Exception ex){
			ex.printStackTrace();
		}
	}
	
}