Section $2$: Input and Output Format

Here are samples of the input file and the output of your program.

The format of the input file is as follows:

the $1^{st}$ line shows the type $($either integer or string$),$

the $2^{nd}$ line shows the number of elements,

each subsequent line shows an element.

The number of elements is in the range $1..10000000.$

For integers, the elements are in the range $1.\mathrm{.}10000000.$

For strings, the elements have length at most $20$ and contain lower$-$case letters only.

We will run your program by a command line like:

where the argument "input$123.$txt$"$ is an example of the input filename.

Your program should only output the result number.

Please follow the above output format and DO NOT print any extra information.