#include<iostream>
#include<string>
using namespace std;
int main()
{
    string str;
    getline(cin, str);
    int length = str.length();
    int tmp = -1;
    for(int i=0; i<length; i++)
    {
        if(str[i] == ' ')
        {
            tmp = i;
        }
    }

    cout<<length-tmp-1<<endl;
    return 0;
}