import sys
readline = sys.stdin.readline

# DEBUG = True
DEBUG = False


class Interactive:
    def __init__(self):
        self.ques_cnt = 0
        self.create_data()

    def create_data(self):
        self.grid = '#####..##..##...####'
        self.H = 5
        self.W = 4
        self.xy = 6
        self.goal = 15
        self.d = 2

    def count_front_cells(self):
        INF = 20151224
        if self.xy == self.goal:
            return 'Merry Christmas!'
        dx = (self.W, 1, -self.W, -1)[self.d]
        xy = self.xy
        cnt = 0
        while True:
            xy += dx
            if xy == self.goal:
                return INF
            if self.grid[xy] == '#':
                return cnt
            cnt += 1

    def resp_ques(self, *args):
        ch = args[0]
        if ch == 'F':
            dx = (self.W, 1, -self.W, -1)[self.d]
            n = self.count_front_cells()
            if n:
                self.xy += dx
                return str(self.count_front_cells()) + '\n'
            else:
                return str(0) + '\n'
        if ch == 'L':
            self.d += 1
        self.d %= 4
        return str(self.count_front_cells()) + '\n'

    def resp_ans(self, *args):
        pass


if DEBUG:
    interactive = Interactive()


def question(*args, offset=None):
    if offset is None:
        print(*args, flush=True)
    else:
        print(offset, *args, flush=True)
    if DEBUG:
        resp = interactive.resp_ques(*args)
        print(resp, end='')
    else:
        resp = readline()
    if resp[0] == 'M':
        exit()
    return resp


def answer(*args, offset=None):
    if offset is None:
        print(*args, flush=True)
    else:
        print(offset, *args, flush=True)
    if DEBUG:
        interactive.resp_ans(*args)
    else:
        exit()


readline()

W = 100
dx = (W, 1, -W, -1)
visited = set([0])


def dfs(v, d):
    visited.add(v)
    for _ in range(4):
        n = int(question('L'))
        d += 1
        d %= 4
        if not n:
            continue
        w = v + dx[d]
        if w in visited:
            continue
        question('F')
        dfs(w, d)
    question('L')
    question('L')
    question('F')
    question('L')
    question('L')


dfs(0, 0)