#include <bits/stdc++.h>

using namespace std;

#define REP(i,a,b) for(int i=a;i<(int)b;i++)
#define rep(i,n) REP(i,0,n)

int d[10] = {6, 2, 5, 5, 4, 5, 6, 3, 7, 6};

int main() {
  
  int N; cin >> N;
  if(N & 1) {
    N -= 3;
    cout << 7;
  }
  while(N > 0) {
    N -= 2; cout << 1;
  }
  
  return 0;
}