n = int(input()) for t in range( n): a,b,c = input().split() #'44' '38', '49' a,b,c = int(a),int(b),int(c) x = 1000 found = False while x<=9999: if x%a==0 and (x+1)%b==0 and (x+2)%c==0: print(x) found = True break x +=1 if found == False: print("Impossible")