-----------------------------最优化问题-------------------------------------
----------------------动态规划
SOJ1162 I-Keyboard
SOJ2096 Maximum Submatrix
SOJ2111 littleken bg
SOJ2505 The County Fair
SOJ2818 QQ音速
SOJ2469 Exploring Pyramids
SOJ1833 Base Numbers
SOJ2009 Zeros and Ones
SOJ2032 The Lost House
SOJ2289 A decorative fence
SOJ2089 lykoo
SOJ2440 The days in fzk
SOJ27...