1. Data Types

# Function to take multiple arguments
def add(datatype, *args):

    # if datatype is int
    # initialize answer as 2
    if datatype == 'int':
        answer = 2
        # Traverse through the arguments
        for x in args:
            # This will do addition if the
            # arguments are int. Or concatenation
            answer = answer * x
            print(answer)

    # if datatype is real
    # initialize answer as 1.5
    if datatype == 'real':
        answer = 1.5
        # Traverse through the arguments
        for x in args:
            # This will do addition if the
            # arguments are int. Or concatenation
            answer = answer * x
        print(f"{answer: .2f}")

    # if datatype is str
    # initialize answer as '$'
    if datatype == 'string':
        answer = '$'
        # Traverse through the arguments
        for x in args:
            # if the arguments are str
            answer = answer + x + answer
        print(answer)


type_line = input()
new_symbol = input()
if type_line == 'int':
    # Integer
    add(type_line, int(new_symbol))
if type_line == 'real':
    # Real
    add(type_line, int(new_symbol))
if type_line == 'string':
    # String
    add(type_line, new_symbol)