import sys input = sys.stdin.readline x1,x2=map(int,input().split()) def two_five(x): A=0 while x%2==0: A+=1 x//=2 B=0 while x%5==0: B+=1 x//=5 return [A,B] x1=two_five(x1) x2=two_five(x2) def calc(x): return pow(2,x[0])*pow(5,x[1]) if (x1[0]+x1[1]-x2[0]-x2[1])%2==1: while x1!=x2: if x1[0]+1x2[0]+1: x1[0]-=1 print(calc(x1),flush=True) if x1==x2: break k=int(input()) x2=two_five(k) else: if x1[1]+1t[0]: x1[0]-=1 print(calc(x1),flush=True) if x1==x2: break k=int(input()) x2=two_five(k) else: if x1[1]x2[0]+1: x1[0]-=1 print(calc(x1),flush=True) if x1==x2: break k=int(input()) x2=two_five(k) else: if x1[1]+1