#include <iostream>
#include <vector>
#include <string>
#include <utility>
#include <algorithm>
#include <climits>
#include <map>
#include <queue>

using namespace std;

using int64 = long long;

int main() {
    int n;
    cin >> n;
    string ans(n/2,'1');
    if (n%2) ans.back() += 6;

    cout << ans << endl;
}