这道题中间的M应该怎么表示出来

n, k = (input()).split(' ')
n = float(n)
k = float(k)
m = 0
_=200
while True:
    m += 1
    _+=k*0.01*200
    if(m * n >=_):
        m+=1
        break
if m<=20:
    print(f"最早{m}")
else:
    print("Impossible")