from sys import stdin

nii=lambda:list(map(int,stdin.readline().split()))

lnii=lambda:list(map(int,stdin.readline().split()))



n,m=nii()



ms=1900*m+100*(n-m)



ans=0

for i in range(1,10**6):

  p1=0.5**m

  p2=(1-0.5**m)**(i-1)

  p=p1*p2

  t_ms=ms*i

  ans+=p*t_ms



ans=int(ans)

q=ans%10

if q!=0:

  ans+=10-q



print(ans)
from sys import stdin

nii=lambda:list(map(int,stdin.readline().split()))

lnii=lambda:list(map(int,stdin.readline().split()))



n,m=nii()



ms=1900*m+100*(n-m)

ans=ms*(2**m)



print(ans)
from sys import stdin

nii = lambda: list(map(int, stdin.readline().split()))
lnii = lambda: list(map(int, stdin.readline().split()))
n, m = nii()
ms = 1900 * m + 100 * (n - m)
ans = 0
for i in range(1, 10**6):
    p1 = 0.5**m
    p2 = (1 - 0.5**m) ** (i - 1)
    p = p1 * p2
    t_ms = ms * i
    ans += p * t_ms
ans = int(ans)
q = ans % 10
if q != 0:
    ans += 10 - q
print(ans)

from sys import stdin

nii = lambda: list(map(int, stdin.readline().split()))
lnii = lambda: list(map(int, stdin.readline().split()))
n, m = nii()
ms = 1900 * m + 100 * (n - m)
ans = ms * (2**m)
print(ans)

-ans = 0 -for i in range(1, 10**6): -    p1 = 0.5**m -    p2 = (1 - 0.5**m) ** (i - 1) -    p = p1 * p2 -    t_ms = ms * i -    ans += p * t_ms -ans = int(ans) -q = ans % 10 -if q != 0: -    ans += 10 - q +ans = ms * (2**m)