#include<bits/stdc++.h>
using namespace std;
using Int = long long;
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}

//INSERT ABOVE HERE
const Int MAX = 50, INF = 1e9;
Int dp[MAX][MAX];
signed main(){
  Int n;
  cin>>n;
  n--;
  memset(dp,0,sizeof(dp));
  dp[0][0]=1;
  for(Int i=1;i<MAX;i++){
    for(Int j=0;j<=i;j++){
      dp[i][j]=dp[i-1][j];
      if(j) dp[i][j]+=dp[i-1][j-1];
      chmin(dp[i][j],INF);
    }
  }
  Int l=1;
  while(1){
    Int res=0;
    for(Int i=1;i*3<=l;i++)
      for(Int j=0;i*3+j<=l;j++)
        if(i*3+j==l) res+=dp[l-1][i*3-1];
    if(res<=n) n-=res,l++;
    else break;
  }
  Int c=1;
  string ans;
  for(Int d=0;d+1<l;d++){
    Int res=0;
    for(Int i=0;i<=l-(d+2);i++)
      if((c+i)%3==0) res+=dp[l-(d+2)][i];
    
    if(res<=n){
      n-=res;
      c++;      
      ans.push_back('5');
    }else{
      ans.push_back('3');
    }
  }
  cout<<ans<<5<<endl;
  return 0;
}