摘要：
B. Arpa’s obvious problem and Mehrdad’s terrible solution time limit per test 1 second memory limit per test 256 megabytes input standard input output 阅读全文
摘要：
Alyona's mother wants to present an array of n non-negative integers to Alyona. The array should be special. Alyona is a capricious girl so after she 阅读全文
摘要：
C. Dasha and Password time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output C. Dasha and Passw 阅读全文