def solve(A,B):
    k=1
    while True:
        for a in range(k+1):
            b=k-a

            if 200*a-k<2*A*k<=200*a+k and 200*b-k<2*B*k<=200*b+k:
                return  k
        k+=1

A,B=map(int,input().split())
print(solve(A,B))