import sys
input=lambda: sys.stdin.readline().rstrip()
a,b=map(int,input().split())
ansa,ansb=float("inf"),float("inf")
for t in range(1,201):
  for i in range(t):
    aa=(100*i)//t
    bb=(100*(t-i))//t
    if (100*i-aa*t)*2>=t:
      aa+=1
    if (100*(t-i)-bb*t)*2>=t:
      bb+=1
    if aa==a and bb==b:
      if t<ansa+ansb:
        ansa,ansb=i,t-i
print(1 if min(a,b)==0 else ansa+ansb)