print("hello  "+__name__)

def mainnnn():
    print("hello")
    print("welcome user")

if __name__=="__main__":
    mainnnn()

def sum():
    print("result 1 is=")

def sub():
    print("result 2 is=")

def main():
    sum()
    sub()

if __name__=="__main__":
    main()