C++ :

#include<bits/stdc++.h>
using namespace std;
int ans=0,a[27]={1,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,4,1,2,3,1,2,3,4};
int main()
{
	string s;
	getline(cin,s);
	for(int i=0;i<s.size();i++)
	  {
	  	if(s[i]==' ') ans++;
	  	else ans+=a[s[i]-96];
	  }
	
	cout<<ans;
	return 0;
}