#include <bits/stdc++.h>   using namespace std;   int modi = 1e9 + 7;   unsigned long long gcd(unsigned long long a, unsigned long long b) {     return !b ? a : gcd(b, a % b);   }   int main() {     ios::sync_with_stdio(false);     int n;     cin >> n;     for (int i = 0; i < n; i++) {       int x;       cin >> x;       string str =   ;       if (x % 2 == 1) {         str +=  7 ;         x -= 3;       }       while (x > 1) {         str +=  1 ;         x -= 2;       }       cout << str << endl;     }     return 0;   }   