#include<bits/stdc++.h>
int main()
{
    int n;
    std::cin>>n;
    std::vector<int> v;
    while(n>18)
    {
        n-=7;
        v.push_back(8);

    }
    if(n==18)
    {
        v.push_back(8);
        v.push_back(8);
        v.push_back(4);
    }
    else
    if(n==17)
    {
        v.push_back(8);
        v.push_back(8);
        v.push_back(7);
    }
    else
    if(n==16)
    {
        v.push_back(8);
        v.push_back(8);
        v.push_back(1);
    }
    if(n==15)
    {
        v.push_back(8);
        v.push_back(0);
        v.push_back(1);
    }
    else
    if(n==14)
    {
        v.push_back(8);
        v.push_back(8);
    }
    else
    if(n==13)
    {
      v.push_back(8);
      v.push_back(6);
    }
    else
         if(n==12)
    {
        v.push_back(8);
        v.push_back(2);
    }
    else
     if(n==11)
    {
        v.push_back(6);
        v.push_back(2);
    }
    else
     if(n==10)
    {
        v.push_back(0);
        v.push_back(4);
    }
    else
     if(n==9)
    {
        v.push_back(9);
        v.push_back(1);
    }
    else
     if(n==8)
    {
        v.push_back(0);
        v.push_back(1);
    }
    else
     if(n==7)
    {
        v.push_back(2);
        v.push_back(1);
    }
    else
     if(n==6)
    {
        v.push_back(4);
        v.push_back(1);
    }
    else
    if(n==5)
    {
        v.push_back(7);
        v.push_back(1);
    }
    else
    if(n==4)
    {
        v.push_back(1);
        v.push_back(1);
    }
    else
    if(n==3)
    {
        v.push_back(7);

    }
    if(n==2)
    {
        v.push_back(1);

    }
    reverse(v.begin(), v.end());
    for(int i=0; i<v.size(); i++) std::cout<<v[i];



}