Problem descriptions come from translation. Their contents are not necessarily literally identical to the original texts. But every effort has been made to achieve consistency and avoid ambiguities.

Problem ID	Title
3112 Problem A	Digital Biochemist Circuit
3113 Problem B	The Halting Problem
3114 Problem C	Countries in War
3115 Problem D	Energy × Delay
3116 Problem E	MegaCheckers
3117 Problem F	World Cup
3118 Problem G	Critical Route
3119 Problem H	Friends or Enemies?