摘要:
C. The Big Race time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Vector Wil... 阅读全文
摘要:
ll gcd(ll a,ll b){ return b? gcd(b,a%b):a;}简洁版本的总是容易忘。。。。。放这儿容易找~~ 阅读全文