n = int(input()) results = [] for _ in range(n): a, b, c = map(int, input().split()) for g in range(1000, 10000): if g % a == 0 and (g + 1) % b == 0 and (g + 2) % c == 0: results.append(g) break else: results.append("Impossible") for result in results: print(result)