a,b = map(int,input().split())
ans = 10**7
for x in range(300):
    for y in range(300):
        if x==y==0: continue
        if a-0.5 <= 100*x/(x+y) < a+0.5 and b-0.5 <= 100*y/(x+y) < b+0.5:
            ans = min(ans,x+y)
print(ans)