Codeforces Round #591 (Div. 2, based on Technocup 2020 Elimination Round 1)
打cf的过程中遭受到了DDOS攻击,导致最终无法进行下去,也算是奇闻一件了A.CME思路:看似像个火柴游戏,实则只是个判断奇偶的水题/*AuthorOwen_Q*/#includeusingnamespacestd;typedeflonglongll;constintmaxn=1e7+5;inta[maxn];intmain(){intn,q;//freopen(".txt","r",stdin)