QOJ.ac
QOJ
As a traditional event in the past years, join the IOI 2026 Prediction Game!
Top Rated Authored Problems
#353: ppeach
Authored Problems: : 0
#353: pphorse
Authored Problems: : 0
#353: PPL
Authored Problems: : 0
#353: pplk
Authored Problems: : 0
#353: ppllxx_9G
Authored Problems: : 0
#353: pplppl
Authored Problems: : 0
#353: ppmn_6
Authored Problems: : 0
#353: ppointer
Authored Problems: : 0
#353: ppoloqq
Authored Problems: : 0
#353: PPP
Authored Problems: : 0
#353: ppp.h
Authored Problems: : 0
#353: ppp123
Authored Problems: : 0
#353: ppp152
Authored Problems: : 0
#353: ppp2
Authored Problems: : 0
#353: ppp204
Authored Problems: : 0
#353: pppbpcmd
Authored Problems: : 0
#353: pppddd
Authored Problems: : 0
#353: pppkq
Authored Problems: : 0
#353: pppoqqq
Authored Problems: : 0
#353: pppp
Authored Problems: : 0
#353: ppppp
Authored Problems: : 0
#353: pppppp
Authored Problems: : 0
#353: ppppppjjx
Authored Problems: : 0
#353: pppppppp
Authored Problems: : 0
#353: pppppppppppp
Authored Problems: : 0
#353: ppppppwwww
Authored Problems: : 0
#353: ppppqqqqwwwwaaaa
Authored Problems: : 0
#353: ppppuu
Authored Problems: : 0
#353: ppppy
Authored Problems: : 0
#353: pppsy
Authored Problems: : 0
#353: pppwolf
Authored Problems: : 0
#353: pppwqqq
Authored Problems: : 0
#353: pppzz
Authored Problems: : 0
#353: ppssbb09
Authored Problems: : 0
#353: ppst
Authored Problems: : 0
#353: PPTAS
Authored Problems: : 0
#353: ppwwyyxx
Authored Problems: : 0
#353: PPYYHH
Authored Problems: : 0
#353: PQ
Authored Problems: : 0
#353: pqhxapple
Authored Problems: : 0
#353: prabowo
Authored Problems: : 0
#353: Prackiee
Authored Problems: : 0
#353: practice
Authored Problems: : 0
#353: practice2
Authored Problems: : 0
#353: practicer
Authored Problems: : 0
#353: pradeepkulkarni
Authored Problems: : 0
#353: Prady
Authored Problems: : 0
#353: Pragadeeshwaran
Authored Problems: : 0
#353: prairie2022
Authored Problems: : 0
#353: prakarshsurya
Authored Problems: : 0
#353: Prakhar_Srivastava24
Authored Problems: : 0
#353: pramana
Authored Problems: : 0
#353: pran798
Authored Problems: : 0
#353: Pranav624
Authored Problems: : 0
#353: pranjalChabra
Authored Problems: : 0
#353: Pranjil64
Authored Problems: : 0
#353: prant_0hh
Authored Problems: : 0
#353: prantokhaan
Authored Problems: : 0
#353: pranx2
Authored Problems: : 0
#353: Prapti_roy
Authored Problems: : 0
#353: prarie
Authored Problems: : 0
#353: Pras28
Authored Problems: : 0
#353: Prasoon_Patel
Authored Problems: : 0
#353: pratapaman
Authored Problems: : 0
#353: prate_ek23
Authored Problems: : 0
#353: Pratham2123
Authored Problems: : 0
#353: Pratik_10072008
Authored Problems: : 0
#353: pratik.kr
Authored Problems: : 0
#353: pratx
Authored Problems: : 0
#353: pratyanch_jain
Authored Problems: : 0
#353: prawol
Authored Problems: : 0
#353: prawol1
Authored Problems: : 0
#353: prayerhgq
Authored Problems: : 0
#353: praying_cqf
Authored Problems: : 0
#353: prayluck
Authored Problems: : 0
#353: prcsamrat
Authored Problems: : 0
#353: Prean
Authored Problems: : 0
#353: preca
Authored Problems: : 0
#353: precyT
Authored Problems: : 0
#353: predictor
Authored Problems: : 0
#353: pref_ctrl27
Authored Problems: : 0
#353: Prefer_P
Authored Problems: : 0
#353: preferna
Authored Problems: : 0
#353: prefeshel
Authored Problems: : 0
#353: preklis
Authored Problems: : 0
#353: Prekzursil
Authored Problems: : 0
#353: Prepotente
Authored Problems: : 0
#353: preserves
Authored Problems: : 0
#353: President
Authored Problems: : 0
#353: PresidentXi
Authored Problems: : 0
#353: pretentious
Authored Problems: : 0
$$\det(AB) = \sum_{S\in\tbinom{[n]}m} \det(A_{[m],S})\det(B_{S,[m]})$$
#353: Pretharp
Authored Problems: : 0
#353: pretreer
Authored Problems: : 0
#353: Pretty_yhb
Authored Problems: : 0
#353: preumMW
Authored Problems: : 0
#353: Prezes
Authored Problems: : 0
#353: Prgl
Authored Problems: : 0
#353: prh
Authored Problems: : 0
#353: Prhhhh
Authored Problems: : 0
#353: PriashisG
Authored Problems: : 0