import java.util.*;
import static java.lang.Math.*;
 
public class ppp {
	
	
		
  public static void main(String[] args) {
	  Scanner sc=new Scanner(System.in);
	  int n=sc.nextInt();
	  int a[]={6,2,5,5,4,5,6,3,7,6};
	  if(n==2)System.out.println(1);
	  else if(n==3)System.out.println(7);
	  else if(n==4)System.out.println(11);
	  else{
		  int x=n/2;
		  if(n%2==0){
			  for(int i=0;i<n/2;i++){
				  System.out.print(1);
			  }
			  System.out.println();
		  }
		  else{
			  for(int i=0;i<n/2;i++){
				  if(i==0)System.out.print(7);
				  else System.out.print(1);
			  }
			  System.out.println();
		  }
		  
		  
		  
	  }
	  
  }}