摘要：8201-BBP Formula Time limit: 3.000 seconds In 1995, Simon Plouffe discovered a special summation style for some constants. Two year later, together wi 阅读全文

摘要：B. Polygons time limit per test：2 seconds memory limit per test：256 megabytes input：standard input output：standard output B. Polygons time limit per t 阅读全文

摘要：B. Expansion coefficient of the array time limit per test：1 second memory limit per test：256 megabytes input：standard input output：standard output B. 阅读全文

摘要：B. Gluttony time limit per test：2 seconds B. Gluttony time limit per test：2 seconds memory limit per test：256 megabytes memory limit per test：256 mega 阅读全文

摘要：C. Neko does Maths time limit per test：1 second memory limit per test：256 megabytes input：standard input output：standard output Neko loves divisors. D 阅读全文