from typing import Tuple

class Solver:
    def __init__(self, id: int):
        self.id = id
        self.stage = None
        self.step = 0
        self.cur = 0
        self.next = 0
        self.total = 1440
        self.half = 720
        self.awake_at_zero = True

    def request(self) -> Tuple[int, str]:
        return self.next, f"at {(self.next // 60):02}:{(self.next % 60):02} check {self.id}"

    def submit(self, is_awake: bool) -> str:
        self.step += 1
        # print(self.stage, self.step, self.cur, self.next)

        if self.stage is None:
            self.awake_at_zero = is_awake
            self.next = 48
            self.cur = 0
            self.stage = 0
        elif self.stage == 0:
            if is_awake != self.awake_at_zero:
                self.stage = 1
                self.cur = self.cur + self.half
                self.next = self.cur + 1
            else:
                self.cur = self.next
                self.next = self.cur + 48 - self.step
        elif self.stage == 1:
            if self.awake_at_zero == is_awake:
                t = self.next
                if self.awake_at_zero:
                    t = (t + self.half) % self.total

                return f"{(t // 60):02}:{(t % 60):02}"
            elif self.next == self.total - 1:
                t = 0
                if self.awake_at_zero:
                    t = (t + self.half) % self.total

                return f"{(t // 60):02}:{(t % 60):02}"

            else:
                self.cur = self.next
                self.next += 1

        return ""


def __main__():
    n = int(input())

    solvers = [Solver(i + 1) for i in range(n)]

    schedule = [list() for i in range(1440)]
    schedule[0] = solvers

    result = ["" for i in range(n)]
    for i in range(1440):
        # print(i)
        for solver in schedule[i]:
            _, s = solver.request()
            print(s)
            response = input()
            process_result = solver.submit(response == "awake")
            if process_result != "":
                result[solver.id - 1] = process_result
            else:
                t, _ = solver.request()
                schedule[t].append(solver)

    print("answer")
    for s in result:
        print(s)

__main__()