---

#include

using namespace std;

 

int main(int argc, char const *argv[])

{

string s;

int num[] = {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 pston[] = {1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6, 6 , 7, 7, 7, 8, 8, 8, 8};

while(getline(cin, s)){

int ans = 0;

for(int i = 0; i < s.size(); i ++) {

ans += num[(s[i] - 'a')];

if(i != 0 && pston[s[i] - 'a'] == pston[s[i - 1] - 'a']) ans += 2;

}

cout << ans << endl;

}

 

return 0;

}