欧拉公式:\(V-E+F=2\)(\(V\)为定点数,\(E\)为边数,\(F\)为区域数) 皮克定律:\(S=n+\frac{s}{2}-1\)(\(n\)为内部格点数目,\(s\)为多边形边界上的格点数目) n = \(\lfloor \frac{n}{m} \rfloor + \lfloor \frac{n + 1}{m} \rfloor + ... + \lfloor \frac{n + m - 1}{m} \rfloor\)