//#define _GLIBCXX_DEBUG

#include<bits/stdc++.h>
using namespace std;

#define endl '\n'
#define lfs cout<<fixed<<setprecision(10)
#define ALL(a)  (a).begin(),(a).end()
#define ALLR(a)  (a).rbegin(),(a).rend()
#define spa << " " <<
#define fi first
#define se second
#define MP make_pair
#define MT make_tuple
#define PB push_back
#define EB emplace_back
#define rep(i,n,m) for(ll i = (n); i < (ll)(m); i++)
#define rrep(i,n,m) for(ll i = (ll)(m) - 1; i >= (ll)(n); i--)
using ll = long long;
using ld = long double;
const ll MOD1 = 1e9+7;
const ll MOD9 = 998244353;
const ll INF = 1e18;
using P = pair<ll, ll>;
template<typename T1, typename T2>
bool chmin(T1 &a,T2 b){if(a>b){a=b;return true;}else return false;}
template<typename T1, typename T2>
bool chmax(T1 &a,T2 b){if(a<b){a=b;return true;}else return false;}
ll median(ll a,ll b, ll c){return a+b+c-max({a,b,c})-min({a,b,c});}
void ans1(bool x){if(x) cout<<"Yes"<<endl;else cout<<"No"<<endl;}
void ans2(bool x){if(x) cout<<"YES"<<endl;else cout<<"NO"<<endl;}
void ans3(bool x){if(x) cout<<"Yay!"<<endl;else cout<<":("<<endl;}
template<typename T1,typename T2>
void ans(bool x,T1 y,T2 z){if(x)cout<<y<<endl;else cout<<z<<endl;}  
template<typename T>
void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++)
{cout<<v[i][0];for(ll j=1;j<w;j++)cout spa v[i][j];cout<<endl;}};
void debug(vector<string>&v,ll h,ll w){for(ll i=0;i<h;i++)
{for(ll j=0;j<w;j++)cout<<v[i][j];cout<<endl;}};
template<typename T>
void debug(vector<T>&v,ll n){if(n!=0)cout<<v[0];
for(ll i=1;i<n;i++)cout spa v[i];cout<<endl;};
template<typename T>
vector<vector<T>>vec(ll x, ll y, T w){
  vector<vector<T>>v(x,vector<T>(y,w));return v;}
ll gcd(ll x,ll y){ll r;while(y!=0&&(r=x%y)!=0){x=y;y=r;}return y==0?x:y;}
vector<ll>dx={1,-1,0,0,1,1,-1,-1};
vector<ll>dy={0,0,1,-1,1,-1,1,-1};
template<typename T>
vector<T> make_v(size_t a,T b){return vector<T>(a,b);}
template<typename... Ts>
auto make_v(size_t a,Ts... ts){
  return vector<decltype(make_v(ts...))>(a,make_v(ts...));
}
template<typename T1, typename T2>
ostream &operator<<(ostream &os, const pair<T1, T2>&p){
  return os << p.first << " " << p.second;
}
//mt19937 mt(chrono::steady_clock::now().time_since_epoch().count());

int main(){
  cin.tie(nullptr);
  ios_base::sync_with_stdio(false);
  ll res=0,buf=0;
  bool judge = true;
  vector<ll>v;
  ll now=1;
  while(now/5<=INF){
    v.PB(now);
    now*=5;
  }
  //debug(v,v.size());
  ll sz=v.size();
  //cout<<sz<<endl;
  ll n;cin>>n;
  {
    //sz=2;
    ll tmp=0;
    rep(i,0,sz)tmp+=v[i]*2;
    auto f=[&](string &lim){
      ll len=sz*5;
      auto dp=make_v(sz+1,len,2,0LL);
      dp[sz][0][0]=1;
      rrep(i,1,sz+1){
        rep(j,0,len){
          rep(o,0,lim[i-1]-'0'+1){
            if(j+o<len)dp[i-1][j+o][(o!=lim[i-1]-'0')]+=dp[i][j][0]; 
          }
          rep(o,0,5){
            if(j+o<len)dp[i-1][j+o][1]+=dp[i][j][1]; 
          }
        }
        //cout<<i<<endl;
        //debug(dp[i-1],len,2);
      }
      //debug(dp[0],len,2);
      //cout<<lim spa dp[0][2*sz][0] spa dp[0][2*sz][1]<<endl;
      return dp[0][2*sz][0]+dp[0][2*sz][1];
    };
    string from(sz,'2'),to;
    ll tmp2=tmp+n;
    //cout<<tmp spa tmp2<<endl;
    rep(i,0,sz){
      to+=char('0'+tmp2%5);
      tmp2/=5;
    }
    //cout<<to spa from<<endl;
    cout<<f(to)-f(from)<<endl;
  }
  return 0;
}