#include <iostream>
#include <string>
using namespace std;
int main()
{
    string s;
    //cin >> s
    //cin 一遇到空格就不输入
    getline(cin,s);
    size_t pos = s.rfind(' ');
    if(pos != string::npos)
    {
        cout<<s.size()-pos-1<<endl;
    }
    else
    {
        cout<<s.size()<<endl;
    }
}