The doors of the jam produced by a company do not open. In order for them to be able to sell their jam, they reward the one who can open the jam. All the people try to open the door of the jam.
2019
2005
1976
2024
2017
1994
1975
2001
2009
1985
2002
2006
2018
2023
2015
—
2008
1990
1974
