def round_half_up(n): return int(n + 0.5) A, B = map(int, input().split()) s = 0 for i in range(200): for j in range(200): if i == 0 and j == 0: continue s = i + j if A == round_half_up(100*i / s) and B == round_half_up(100*j / s): break else: continue break print(s)