摘要：
A histogram is a polygon composed of a sequence of rectangles aligned at a common base line. The rectangles have equal widths but may have different h 阅读全文
摘要：
C. Berzerk time limit per test 4 seconds memory limit per test 256 megabytes input standard input output standard output C. Berzerk time limit per tes 阅读全文
摘要：
D. Legacy time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output D. Legacy time limit per test 阅读全文