摘要：
C. The Smallest String Concatenation time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output You 阅读全文
摘要：
B. Alice, Bob, Two Teams time limit per test 1.5 seconds memory limit per test 256 megabytes input standard input output standard output Alice and Bob 阅读全文
摘要：
A. Grandma Laura and Apples time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Grandma Laura 阅读全文