# line_count.py
import sys

if __name__ == "__main__":

    count = 0
    for line in sys.stdin:
        count += 1

    # print goes to sys.stdout
    print(count)

20e6674ab4a1d4a1760ea406b7d7ea6265eadd87
<mask token>

<mask token>
if __name__ == '__main__':
    count = 0
    for line in sys.stdin:
        count += 1
    print(count)

import sys
if __name__ == '__main__':
    count = 0
    for line in sys.stdin:
        count += 1
    print(count)

# line_count.py
import sys

if __name__ == "__main__":

    count = 0
    for line in sys.stdin:
        count += 1

    # print goes to sys.stdout
    print(count)
