s = open("untitled.txt",'r')

x = s.readline()
myList = []

while x != '':
    
    if '\n' in x:
        x = x[:-1]
    myList.append(x)
    x = s.readline()
    
    
print(myList)

s.close()

myStr = ''

for k in myList:
    myStr += str(int(k) * 2) + '\n'
    
myStr = myStr[:-1]

s = open('untitled.txt', 'w')
s.write(myStr)
s.close()