#include <iostream>
using namespace std;

int main(){
    int N; cin >> N;

    int i=0;

    while(N>0){
        if(N>6){
            N = N-6;
            cout << 9;
        }

        if(N==5){
            N= N-5;
            cout << 5;
        }

        if(N==4){
            N = N-2;
            N = N-2;
            cout << 11;
        }
        
        if(N==3){
            N= N-3;
            cout << 7;
        }
        if(N==2){
            N = N-2;
            cout << 1;
        }
    }

    cout << endl;
    return 0;
}