[YouTube] Fix nsig challenge for player `3bb1f723` #3083

Job	Run time
Linter	14s
Select tests from inputs	1s
Run tests (ubuntu-20.04, 2.7, cpython, core, sh)	1m 9s
Run tests (ubuntu-20.04, 3.2, cpython, core, sh)	1m 1s
Run tests (ubuntu-20.04, 3.5, cpython, core, sh)	1m 5s
Run tests (ubuntu-20.04, 3.9, cpython, core, sh)	1m 9s
Run tests (ubuntu-20.04, 3.11, cpython, core, sh)	57s
Run tests (ubuntu-20.04, pypy-2.7, cpython, core, sh)	2m 29s
Run tests (ubuntu-20.04, pypy-3.6, cpython, core, sh)	2m 36s
Run tests (ubuntu-20.04, pypy-3.7, cpython, core, sh)	2m 40s
Run tests (windows-2019, 3.4, cpython, core, bat)	2m 15s
Run tests (windows-2019, 3.4, cpython, nodownload, bat)	1m 5s
Run tests (ubuntu-20.04, 2.7, jython, core, sh)	3m 1s
Run tests (ubuntu-20.04, 2.7, jython, nodownload, sh)	21s
	20m 3s

Provide feedback