摘要:
原题链接 无向连通图中,如果删除某边后,图变成不连通,则称该边为桥。 也可以先用Tajan()进行dfs算出所有点 的low和dfn值,并记录dfs过程中每个 点的父节点;然后再把所有点遍历一遍, 看其low和dfn,满足dfn[ fa ]<low[ i ](0<i<=n, i 的 father为f 阅读全文
摘要:
How many 0's? Description A Benedict monk No.16 writes down the decimal representations of all natural numbers between and including m and n, m ≤ n. H 阅读全文