摘要：
D. Fibonacci-ish time limit per test 3 seconds memory limit per test 512 megabytes input standard input output standard output Yash has recently learn 阅读全文
摘要：
B. A Trivial Problem time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Mr. Santa asks all 阅读全文
摘要：
A. Ebony and Ivory time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Dante is engaged in a 阅读全文