#include<iostream>
#include<cstring>
#include<cstdio>
#include<cmath>

using namespace std;

int main()
{
    
    string a;
    int ans;
    
    getline(cin,a);
    
    ans=a.length();
    
    for(int i=1;i<=a.length();i++)
    	if(a[i]==' ')
    		ans--;
    		
    cout<<ans;
    
    return 0;
    
}