构造
#include<iostream>
#include<algorithm>
#include<iomanip>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<string>
#include<cmath>
#include<set>
#include<queue>
#include<stack>
#include<map>
#define PI acos(-1.0)
#define in freopen("in.txt", "r", stdin)
#define out freopen("out.txt", "w", stdout)
#define kuaidian ios::sync_with_stdio(0);
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
const int maxn = 100 + 7, maxd = 1e5 + 7;
const int mod = 1e9 + 7;
const int INF = 0x7f7f7f7f;
int k;
int main() {
cin >> k;
if(k > 36) cout << -1;
//else if(k == 0) cout << 1;
else {
string ans;
while(k) {
if(k >= 2) ans += '8', k -= 2;
else ans += '4', k -= 1;
}
cout << ans;
}
return 0;
}
