n, x = map(int, input().split())

s = False

for a in range(1, int(n**(1/x)) + 2):
    p = a ** x 
    if p < n:
        b = n - p
        if b > 0 and a != b:
            s = True
            break
    elif p == n:
        pass
    else:
        break
        
if s:
    print("Yes")
else:
    print("No")