import java.util.Scanner;

public class No83 {

	public static void main(String[] args) {
		

		int n;
		
		Scanner sc = new Scanner(System.in);
		n = Integer.parseInt(sc.next());
		sc.close();
		
		
		No83Solver sl = new No83Solver();
		
		sl.maxnum(n);

		
		
	}

}

class No83Solver{
	
	final int NINE = 6;
	final int EIGHT = 7;
	final int SEVEN = 3;
	final int SIX = 6;
	final int FIVE = 5;
	final int FOUR = 4;
	final int THREE = 5;
	final int TWO = 5;
	final int ONE = 2;
	final int ZERO = 6;
	
	
	
	public void maxnum(int n){
		
		String numstring = "";
		
		if (n % 2 == 1) {
			numstring = "7";
			n = n - SEVEN;
		}
		while(n > 0) {
			numstring = numstring + "1";
			n = n - ONE;
		}
		
		
		System.out.println(numstring);
	}
	
}