摘要：
B. Mr. Kitayuta's Colorful Graph time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Mr. Kita 阅读全文
摘要：
C. Balls and Boxes time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output C. Balls and Boxes tim 阅读全文