#include<iostream>
#include<math.h>
#include<conio.h>
#include<string>

using namespace std;

int main() {
 char s;
 int count = 0;
 cin >> noskipws;
 while (cin >> s) {
    if ((s=='a')||
        (s=='d')||
        (s=='g')||
        (s=='j')||
        (s=='m')||
        (s=='p')||
        (s=='s')||
        (s=='v')||
        (s=='y')||
        (s=='.')||
        (s==' ')) {count+=1;}
    if ((s=='b')||
        (s=='e')||
        (s=='h')||
        (s=='k')||
        (s=='n')||
        (s=='q')||
        (s=='t')||
        (s=='w')||
        (s=='z')||
        (s==',')) {count+=2;}
    if ((s=='c')||
        (s=='f')||
        (s=='i')||
        (s=='l')||
        (s=='o')||
        (s=='r')||
        (s=='u')||
        (s=='x')||
        (s=='!')) {count+=3;}
 }
 cout << count;
 getch();
 return 0;
}

PS I wanted to use "(int(s)-97)%3".