def fac(num):
    if num==1 or num==0:
        return 1
    else:
        return num * fac(num-1)
s=0
b,g=map(float,input().split())
p=b/(b+g)
for i in range(3,7):
    s+=(fac(6)/(fac(6-i)*fac(i)))*((p)**(i))*((1-p)**(6-i))
print(round(s,3))

from math import comb
boy_ratio, girl_ratio = map(float, input().split(" "))
pb = boy_ratio / (boy_ratio + girl_ratio)
pf = 1 - pb
print(round(sum(comb(6, x) * (pb**x) * (pf**(6 - x)) for x in range(3, 7)),3))

import math
boys = 1.09/2.09
girls = 1/2.09
ans = 0
for x in range(3, 7):
    ans += math.comb(6, x)*boys**x*girls**(6-x)
print(round(ans, 3))

import math
# Read input from STDIN
input_line = input()

# Split the input into a list of values
values = input_line.split()

# Convert the values to the appropriate data types
p = float(values[0])/(float(values[0])+float(values[1]))
q = float(values[1])/(float(values[0])+float(values[1]))
n = 6


def binomial():
    result = 0
    for i in range(1,7):
        pdf = (math.factorial(n)/(math.factorial(i)*((math.factorial(n-i)))))*(p**i)*(q**(n-i))
        if i >= 3:
            result = result + pdf
            
    print(round(result, 3)) 
        
        
binomial()