HDU 1166 敌兵布阵 HDU 1754 I Hate It POJ 3468 A Simple Problem with Integers POJ 2528 Mayor’s posters HDU 1698 Just a Hook ZOJ 1610 Count the Colors POJ 3264 Balanced Lineup HDU 4027 Can you answer these queries? HDU 1540 Tunnel Warfare HDU 3974 Assign the task HDU 4578 Transformation HDU 4614 Vases and Flowers HDU 4553 约会安排 POJ 1177 Picture HDU 1255 覆盖的面积 HDU 1542 Atlantis HDU 3642 Get The Treasury