5个数字3个为一组有多少组算法

简介：That night, the bandit camp outside the city was always noisy. The bandits were busy making various siege equipment overnight, digging and bagging soil. Even the navy was not idle, bang bang bang raising various protective wooden boards on both sides of the ship's side. Looking from the top of the city, for more than ten miles around, on the water and below the city, there were lights everywhere.