大模拟:枚举6个方向.检查每一个0是否能移动 Puzzle Time Limit: 2 Seconds Memory Limit: 65536 KB Little Georgie likes puzzles very much. Recently he has found a wooden triangle in the box with old toys. The side of the triangle is n inches long. The triangle is divid…
In computer security, Capture the Flag (CTF) is a computer security competition. CTF contests are usually designed to serve as an educational exercise to give participants experience in securing a machine, as well as conducting and reacting to the so…