【HDU】[1003]Max Sum

【HDU】[1009]FatMouse' Trade

【HDU】[1010]Tempter of the Bone

【HDU】[1022]Train Problem I

【HDU】[1040]As Easy As A+B

【HDU】[1048]The Hardest Problem Ever

【HDU】[1051]Wooden Sticks

【HDU】[1052]Tian Ji -- The Horse Racing

【HDU】[1060]Leftmost Digit

【HDU】[1062]Text Reverse