import java.io.*;
import java.util.*;

public class genetic{
	public static void main (String[] args){
		try{
			BufferedReader in = new BufferedReader(new FileReader("genetic.in"));
			String s;
			while ((s = in.readLine())!=null && (s.charAt(0))!='0'){
				int n = java.lang.Integer.parseInt(s);
				String out = gen(n);
				
				System.out.println(out);
			}
			
			in.close();
		}catch (IOException e){
			System.out.println(e);
		}
	}
	
	public static String gen(int z){
		String out="N";
		int n=1;
		int c1=0;
		int c2=0;
		int d=0;
		if (z==1) return out;
		for (int i=1; i<=z; i++){
			if (i==1) out = "NO";
			else if((n==1)&&(out=="NO")) n=2;
			else if((n==1)&&(c1<4)){
				char l = out.charAt(out.length()-1);
				char neu=' ';
				if (l=='N') neu = 'O';
				else if (l=='O') neu = 'P';
				else if (l=='P') neu = 'N';
				out += neu;
				c1++;
			}
			else if ((n==2) && (c2<2) || (n==2) && (c2<3) && (d==1)){
				char l = out.charAt(out.length()-1);
				char neu=' ';
				if (l=='N') neu = 'P';
				else if (l=='O') neu = 'N';
				else if (l=='P') neu = 'O';
				out += neu;
				c2++;
			}
			if ((c2==2) && (d==0)){
				c2=0;
				d=1;
				n=1;
			}
			if ((c2==3) && (d==1)){
				c2=0;
				d=0;
				n=1;
			}
			if (c1==4){
				c1=0;
				n=2;
			}
			
		}
		
		return out;
	}
	


}