#!/usr/bin/env python3
from useful import *

def prd(c):
    return (ord(c) - ord('A')) % 23

def scores(c):
    return 1 + prd(c)

def bonus(a, b): # for b (that's us)
    return [[3, 6, 0],
            [0, 3, 6],
            [6, 0, 3]][prd(a)][prd(b)]

rounds = [[l[0], l[2]] for l in lines(open(0))]
ic([[a, b, scores(b), bonus(a, b)] for a, b in rounds])
print(sum(scores(b) + bonus(a, b) for a, b in rounds))