#include #include

using namespace std;

int keytab[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};

int main() { string str; while (cin >> str) { int time = 0; for (int i = 0; i < str.size(); i++) { time += keytab[str[i] - 'a']; if (i != 0 && str[i] - str[i - 1] == keytab[str[i] - 'a']- keytab[str[i - 1] - 'a']) { time += 2; } } printf("%d\n", time); } return 0; }