#include <bits/stdc++.h>
using namespace std;

int cost[] = { 6, 2, 5, 5, 4, 5, 6, 3, 7, 6 };

signed main(){
  int N; cin >> N;
  while( N >= 2 ){
    for( int i = 9; i >= 0; --i )
      if( N >= cost[ i ] ){
        cout << i;
        N -= cost[ i ];
        break;
      }
  }
  return 0;
}