p=int(input()) for u in range(p): b,c,d=input().split() a=int(b) b=int(c) c=int(d) for x in range(1000,9999+1): if x % a == 0 and (x + 1) % b == 0 and (x + 2) % c == 0: print(x) break else: print('Impossible')