摘要:
B. Nikita and string One day Nikita found the string containing letters "a" and "b" only. Nikita thinks that string is beautiful if it can be cut into 阅读全文
摘要:
A. Alex and broken contest time limit per test 2 seconds memory limit per test 256 megabytes One day Alex was creating a contest about his friends, bu 阅读全文