https://practicum.yandex.ru/backend-developer/?utm_source=yandex&utm_medium=cpc&utm_campaign=Yan_Net_RF_Pyth_Des_long_Broad-exp-tgo-22_460&utm_content=sty_context:s_app.mazito:cid_63408673:gid_4620804351:pid_25060868:aid_10897644001:crid_0:rid_25060868:p_0:pty_none:mty_:mkw_:dty_mobile:cgcid_0:rn_%d0%96%d0%b5%d0%bb%d0%b5%d0%b7%d0%bd%d0%be%d0%b3%d0%be%d1%80%d1%81%d0%ba:rid_20086&utm_term=&yclid=4049409260327058969#short-program