n=int(input()) results=[] for i in range(n): a,b,c=map(int,input().split()) x=1000 found=False while x<=9999: if x%a==0 and (x+1)%b==0 and (x+2)%c==0: found=True break x+=1 if found==True: results.append(x) else: results.append("Impossible") for result in results: print(result)