import sys def input(): return sys.stdin.readline().strip() def list2d(a, b, c): return [[c] * b for i in range(a)] def list3d(a, b, c, d): return [[[d] * c for j in range(b)] for i in range(a)] def list4d(a, b, c, d, e): return [[[[e] * d for j in range(c)] for j in range(b)] for i in range(a)] def ceil(x, y=1): return int(-(-x // y)) def INT(): return int(input()) def MAP(): return map(int, input().split()) def LIST(N=None): return list(MAP()) if N is None else [INT() for i in range(N)] def Yes(): print('Yes') def No(): print('No') def YES(): print('YES') def NO(): print('NO') sys.setrecursionlimit(10 ** 9) INF = 10 ** 19 MOD = 10 ** 9 + 7 EPS = 10 ** -10 def round(x): return int((x*2+1) // 2) A, B = MAP() if A > B: A, B = B, A ans = INF for x in range(5000): for y in range(x, 5000): if x == y == 0: continue a = round(x / (x+y) * 100) b = round(y / (x+y) * 100) if a == A and b == B: ans = min(ans, x+y) if ans == INF: raise Exception else: print(ans)