numbers = input().split(" ")

command = input()

turns = 0

while True:
    if command == "end":
        break
    turns += 1
    nums = command.split(" ")
    ind_one = int(nums[0])
    ind_two = int(nums[1])

    if ind_one != ind_two and 0 <= ind_one <= len(numbers) and 0 <= ind_two <= len(numbers):
        if numbers[ind_one] == numbers[ind_two]:
            print(f"Congrats! You have found matching elements - {numbers[ind_one]}!")
            x = numbers.pop(ind_one)
            numbers.remove(x)
        else:
            print("Try again!")

    else:
        print(f"Invalid input! Adding additional elements to the board")
        mid = len(numbers) // 2
        numbers.insert(mid, f"-{turns}a")
        numbers.insert(mid, f"-{turns}a")

    if len(numbers) == 0:
        break

    command = input()

if len(numbers) > 0:
    print("Sorry you lose :(")
    for i in numbers:
        print(i, end=" ")
else:
    print(f"You have won in {turns} turns!")