T = int(input()) for _ in range(T): a, b, c = map(int, input().split()) flag = 0 for x in range(1000, 10000): if x % a == 0 and (x + 1) % b == 0 and (x + 2) % c == 0: print(x) flag = 1 break if flag == 0: print("Impossible")