def f(n):
 print(2*n)
 print()

if __name__=="__main__":
 import sys
 f(int(sys.argv[1]))




dbc86626b0a805311f804d873fc1a48b21fc0cd1
<mask token>

def f(n):
    print(2 * n)
    print()


<mask token>

def f(n):
    print(2 * n)
    print()


if __name__ == '__main__':
    import sys
    f(int(sys.argv[1]))

def f(n):
 print(2*n)
 print()

if __name__=="__main__":
 import sys
 f(int(sys.argv[1]))



