Deng Mingyang heuristica Qian Yi skip2004 Dai Chenxin gtrhetr Yu Haoxiang yhx-12243
They will be the eternal honor of chinese OI !
congratulations !
CNOI, best OI !
China team won the IOI2021 !
Deng Mingyang heuristica Qian Yi skip2004 Dai Chenxin gtrhetr Yu Haoxiang yhx-12243
They will be the eternal honor of chinese OI !
congratulations !
CNOI, best OI !