import shared
from pprint import pprint as pp

rock = "rock"
paper = "paper"
scissors = "scissors"

lose = "X"
tie = "Y"
win = "Z"

Moves = {
   "A":rock,
   "B":paper,
   "C":scissors,

   "X":rock,
   "Y":paper,
   "Z":scissors,
}

Scores = {
   rock: 1,
   paper: 2,
   scissors: 3
}

LosesTo = {
    rock: paper,
    paper: scissors,
    scissors: rock
}
WinsTo = {
    paper: rock,
    scissors: paper,
    rock: scissors
}


def winner(opponent, me):
    if opponent == me:
        return 3 + Scores[me]

    # wins
    if (opponent == rock and me == paper) or (opponent == paper and me == scissors) or (opponent == scissors and me == rock):
        return 6 + Scores[me]

    return 0 + Scores[me]

def which_move(opponent, me):
    if me == lose:
        return WinsTo[Moves[opponent]]
    if me == win:
        return LosesTo[Moves[opponent]]
    if me == tie:
        return Moves[opponent]


def run(moves):
    score = 0
    for move in moves:
        opponent, me = move
        my_move = which_move(opponent, me)
        o_move = Moves[opponent] 
        pts = winner(o_move, my_move)
        score += pts
    print(score)

def main():
    rows = [row.rstrip().split() for row in shared.load(2)]
    run(rows)


if __name__ == "__main__":
    main()