#include <bits/stdc++.h> using namespace std; #ifdef LOCAL #include "settings/debug.cpp" #define _GLIBCXX_DEBUG #else #define Debug(...) void(0) #endif #define rep(i, n) for (int i = 0; i < (n); ++i) using ll = long long; using ull = unsigned long long; int main() { int n; cin >> n; if (n % 2 == 1) { cout << 7; n -= 3; } rep(i, n / 2) cout << 1; cout << endl; return 0; }