#include <iostream>
#include <string>
#include <map>
using namespace std;

int main() {
    map<char, int> mp1 = {
        {'a',1},{'b',2},{'c',3},    //一个键上的字母按几次
        {'d',1},{'e',2},{'f',3},
        {'g',1},{'h',2},{'i',3},
        {'j',1},{'k',2},{'l',3},
        {'m',1},{'n',2},{'o',3},
        {'p',1},{'q',2},{'r',3},{'s',4},
        {'t', 1}, { 'u',2 }, { 'v',3 },
        { 'w',1 }, { 'x',2 }, { 'y',3 }, { 'z',4 },
    };
    map<char, int> mp2 = {    //记录字母是否在一个键上，如果是需要等待
        {'a',2},{'b',2},{'c',2},
        {'d',3},{'e',3},{'f',3},
        {'g',4},{'h',4},{'i',4},
        {'j',5},{'k',5},{'l',5},
        {'m',6},{'n',6},{'o',6},
        {'p',7},{'q',7},{'r',7},{'s',7},
        {'t', 8}, { 'u',8 }, { 'v',8 },
        { 'w',9 }, { 'x',9 }, { 'y',9 }, { 'z',9 },
    };
    string s;
    while (cin >> s) {
        int cnt = 0;
        for (int i = 0; i < s.size(); i++) {
            cnt += mp1[s[i]];
            if (mp2[s[i+1]] == mp2[s[i]]) {
                cnt += 2;
            }
        }
        cout << cnt << endl;
    }

    return 0;
}