Problem P: Count

Source: count.{c,cpp,java}

This problem is strictly to acclimate teams to the contest environment. We strongly suggest you first finish this problem, and then attempt the more complex practice problem.

Input

The input file will contain an unknown number of lines with at most 100 characters on each line. All the characters will be printable ASCII characters. Note that the input file will always exist, but may be empty.

Output

The number of lines in the input file.

Sample Input

one
and two
three

Problem P: Count

Input

Output

Sample Input

Sample Output