#include <iostream>
#include <iomanip>
#include <vector>
#include <utility>
#include <map>
#include <algorithm>
#include <queue>
#include <cmath>
#include <numeric>
#include <set>

using namespace std;
struct aaa{aaa(){cin.tie(nullptr); ios::sync_with_stdio(false); cout<<fixed<<setprecision(20);};}aaa;
template <class T>ostream &operator<<(ostream &o,const vector<T>&v){o<<"{";for(int i=0;i<(int)v.size();i++)o<<(i>0?", ":"")<<v[i];o<<"}";return o;}
#define debug(v) {cerr<<"\033[1;36m[debug]\033[m "<<#v<<" : "<<v<<endl;}

using int64 = long long;
using P = pair<string,string>;

int main() {
    string c;
    cin >> c;
    int n = c.size();
    set<P> s;
    for (int i=1; i<n; i++) {
        if (c[i] == '0') continue;
        s.emplace(c.substr(0,i), c.substr(i,n-i));
    }

    cout << s.size() << endl;
}