The 2019 China Collegiate Programming Contest Harbin Site (CCPC2019哈尔滨站)补题 | 题解
咕咕咕慢速补题中qwqA-Gym102394AArtfulPaintings简单的差分约束??为什么过的人这么少qwq#includeusingnamespacestd;intT,n,m1,m2,t;inthead[3010],dis[3010],done[3010],cnt[3010];intl[6010],r[6010],c[6010];structEdge{intnxt,to,dis;}ed