#include <bits/stdc++.h>
using namespace std;
long long inf = numeric_limits<long long>::max();
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int cases;
  cin >> cases;
  while (cases--) {
    int n;
    cin >> n;
    if (n % 2 == 0)
      cout << 1;
    else
      cout << 7;
    n -= 2;
    n /= 2;
    while (n--) cout << 1;
    cout << "\n";
  }
  return 0;
}
