History of 2.7.21

Revisions on August 21, 2026

• Edits to “Statement”, “Answer”

  Valter Aug 21, 2026, 6:15 AM
  +3 −1 #20191
• Edits to “Statement”, “Solution”, “Answer”

  Tete Aug 21, 2026, 1:45 AM
  +9 −5 #20188
• New solutionnew solution

  Tete Aug 21, 2026, 1:35 AM
  +23 −0 #20187