import java.util.Scanner;
import java.util.stream.IntStream;

public class Main{
	static IntStream REPS(int v){return IntStream.range(0,v);}
	static IntStream REPS(int l,int r){return IntStream.rangeClosed(l,r);}
	static IntStream INS(int n){return REPS(n).map(i->getInt());}
	static Scanner s=new Scanner(System.in);
	static int getInt(){return Integer.parseInt(s.next());}
	static long getLong(){return Long.parseLong(s.next());}

	public static void main(String[]$){
		int n=getInt();
		if(n%2==1) {
			System.out.print(7);
			n-=3;
		}
		while(n>=2) {
			System.out.print(1);
			n-=2;
		}
		System.out.println();
	}
}