#include <iostream>
#include <cstdio>
#include <string.h>
using namespace std;
string a;
int sum;
int main()
{
	getline(cin,a);
	for(int i=0;i<a.size();i++)
	{
		if(a[i]==' ')sum++;
		else if(a[i]=='a' || a[i]=='d' || a[i]=='g' || a[i]=='j' || a[i]=='m' || a[i]=='p' || a[i]=='t' || a[i]=='w')
			sum++;
		else if(a[i]=='b' || a[i]=='e' || a[i]=='h' || a[i]=='k' || a[i]=='n' || a[i]=='q' || a[i]=='u' || a[i]=='x')
			sum+=2;
		else if(a[i]=='c' || a[i]=='f' || a[i]=='i' || a[i]=='l' || a[i]=='o' || a[i]=='r' || a[i]=='v' || a[i]=='y')
			sum+=3;
		else
			sum+=4;
	}
	cout<<sum<<endl;
	return 0;
}

为毛我几乎和题解一样（自己做的），自己全错它全AC