#include <bits/stdc++.h>
using namespace std;
string s;
int main(){
    int ans=0;
    while(cin>>s){
        ans+=s.size();
    }
    cout<<ans;
    return 0;
}

#include <bits/stdc++.h>
using namespace std;
int main()
{
    string n;
    getline(cin,n);
    int ans=0;
    for(int i=0;i<=n.size()-1;i++){if((n[i]>='a'&&n[i]<='z')||(n[i]>='A'&&n[i]<='Z')||(n[i]>='0'&&n[i]<='9'))ans++;}
    cout<<ans;
    return 0;
}

#include <bits/stdc++.h>
using namespace std;
int main() {
	int ans = 0;
	string s;
	getline(cin, s);
	for (int i = 0; i < s.size(); i++) {
		if (s[i] != ' ' && s[i] != '\n') {
			ans++;
		}
	}
	cout << ans;
	return 0;
}