摘要：
1017. StaircasesTime limit: 1.0 secondMemory limit: 64 MBOne curious child has a set ofNlittle bricks (5 ≤N≤ 500). From these bricks he builds different staircases. Staircase consists of steps of different sizes in a strictly descending order. It is not allowed for staircase to have steps equal size 阅读全文