b = [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]
print(sum([b[ord(i) - ord("a") if i != " " else 0] for i in input()]))

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define endl '\n'
void solve();

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int t=1;
//	cin>>t;
	while(t--){
		solve();
	}
	return 0;
}

void solve(){
	string s;
	getline(cin,s);
	map<char,int>a;
	for(int i='a';i<='o';i++){
		a[i]=(i-'a')%3+1;
	}
	a['p']=1;
	a['q']=2;
	a['r']=3;
	a['s']=4;
	a['t']=1;
	a['u']=2;
	a['v']=3;
	a['w']=1;
	a['x']=2;
	a['y']=3;
	a['z']=4;
	a[' ']=1;
	ll ans=0;
	for(auto c:s){
		ans+=a[c];
	}
	cout<<ans<<endl;
}

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str = sc.nextLine();
        int ans = 0;
        for (int i = 0; i < str.length(); i++) {
            ans += solve(str.charAt(i));
        }
        System.out.println(ans);
    }
    public static int solve(char key){
        switch (key){
            case 'a' :
            case 'g' :
            case 'j':
            case 'd' :
            case 'm':
            case 'p':
            case 't':
            case 'w':
            case ' ':
                return 1;
            case 'b' :
            case 'e' :
            case 'h' :
            case 'k':
            case 'n':
            case 'q':
            case 'u':
            case 'x':
                return 2;
            case 'c':
            case 'i':
            case 'f' :
            case 'l':
            case 'o':
            case 'r':
            case 'v':
            case 'y':
                return 3;
            case 's':
            case 'z':
                return 4;
            default:
                return 0;
        }
    }
}

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
       int[] arr = {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};
        char[] c = sc.nextLine().toCharArray();
        int ans = 0;
        for (char temp : c) {
            //如果当前字符为空格，则ans加1
            if(temp==' ')ans++;
            //否则，ans加上arr中对应字符的值
            else{
                ans+=arr[temp-96];
            }
        }
        System.out.println(ans);
    }
}

#include <vector>
#include <set>
#include <string>
using namespace std;
#define int long long
const int mod=1e+7;
int a[26]={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};
signed main() {
    iostream::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    string str;
    getline(cin,str);
    int num=0;
    for(int i=0;i<str.size();i++){
        if(str[i]==' '){//注意空格
            num++;
        }else{
            num+=a[str[i]-'a'];
        }
    }
    cout <<num<< endl;
    return 0;//AC
 }