번호	제목
30237	합집합
30238	카드 게임
30239	트리와 XOR
30240	두 순열 (Easy)
30241	두 순열 (Hard)
30242	🧩 N-Queen (Easy)
30243	🧩 N-Queen (Hard)
30244	🧩 N-Queen (Special)
30245	🧩 N-Queen (mod N)
30246	🧩 N-Queen (Quantum)
30247	Travels
30248	Airplanes
30249	Trucks
30250	Ones
30251	Arc of Triumph 2
30252	Arc of Triumph 3
30253	Arc of Triumph 4
30254	Arc of Triumph 5
30255	Arc of Triumph 6
30256	Arc of Triumph 7