#include using namespace std; #define rep(i,n) for(ll i=0;i=0;i--) #define perl(i,r,l) for(ll i=r-1;i>=l;i--) #define fi first #define se second #define pb push_back #define ins insert #define pqueue(x) priority_queue,greater> #define all(x) (x).begin(),(x).end() #define CST(x) cout<> #define rev(x) reverse(x); using ll=long long; using vl=vector; using vvl=vector>; using pl=pair; using vpl=vector; using vvpl=vector; const ll MOD=1000000007; const ll MOD9=998244353; const int inf=1e9+10; const ll INF=4e18; const ll dy[9]={0,1,-1,0,1,1,-1,-1,0}; const ll dx[9]={1,0,0,-1,1,-1,1,-1,0}; template inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; } template inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; } const int mod = MOD; const int max_n = 200005; struct mint { ll x; // typedef long long ll; mint(ll x=0):x((x%mod+mod)%mod){} mint operator-() const { return mint(-x);} mint& operator+=(const mint a) { if ((x += a.x) >= mod) x -= mod; return *this; } mint& operator-=(const mint a) { if ((x += mod-a.x) >= mod) x -= mod; return *this; } mint& operator*=(const mint a) { (x *= a.x) %= mod; return *this;} mint operator+(const mint a) const { return mint(*this) += a;} mint operator-(const mint a) const { return mint(*this) -= a;} mint operator*(const mint a) const { return mint(*this) *= a;} mint pow(ll t) const { if (!t) return 1; mint a = pow(t>>1); a *= a; if (t&1) a *= *this; return a; } bool operator==(const mint &p) const { return x == p.x; } bool operator!=(const mint &p) const { return x != p.x; } // for prime mod mint inv() const { return pow(mod-2);} mint& operator/=(const mint a) { return *this *= a.inv();} mint operator/(const mint a) const { return mint(*this) /= a;} }; istream& operator>>(istream& is, mint& a) { return is >> a.x;} ostream& operator<<(ostream& os, const mint& a) { return os << a.x;} using vm=vector; using vvm=vector; int main(){ string s;cin >> s; ll n=s.size(); vvm dp(3,vm(3)); ll pre2=0,pre5=0; rep(i,n){ vvm ndp(3,vm(3)); ll t=s[i]-'0'; for(ll d=1;d<10;d++){ rep(j,3){ rep(k,3){ ll p=d; ll toj=j,tok=k; while(p%2==0){ toj++;p/=2; } while(p%5==0){ tok++;p/=5; } ndp[min(toj,2LL)][min(tok,2LL)]+=dp[j][k]; } } } if(i){ for(ll d=1;d<10;d++){ ll p=d; ll toj=0,tok=0; while(p%2==0){ toj++;p/=2; } while(p%5==0){ tok++;p/=5; } ndp[min(toj,2LL)][min(tok,2LL)]+=1; } } rep(d,t){ if(pre2==-1)continue; if(d==0)continue; ll p=d; ll toj=pre2,tok=pre5; while(p%2==0){ toj++;p/=2; } while(p%5==0){ tok++;p/=5; } ndp[min(toj,2LL)][min(tok,2LL)]+=1; } if(pre2!=-1){ if(t==0)pre2=-1; else if(t%2==0){ while(t%2==0){ pre2++;t/=2; } } else if(t%5==0){ pre5++; } } swap(dp,ndp); } if(pre2!=-1)dp[min(pre2,2LL)][min(pre5,2LL)]+=1; cout << dp[2][2] << endl; }