Open sx349 opened 1 year ago
https://pe-cn.github.io/814/?
Problem 814 Mezzo-forte$4n$ people stand in a circle with their heads down. When the bell rings they all raise their heads and either look at the person immediately to their left, the person immediat
https://pe-cn.github.io/814/?
Problem 814 Mezzo-forte$4n$ people stand in a circle with their heads down. When the bell rings they all raise their heads and either look at the person immediately to their left, the person immediat