这一大串在体面里真的是太为何了，是markdown炸了还是html炸了 used[1 ... n] = {0, ..., 0};procedure dfs(v): print v; used[v] = 1; for i = 1, 2, ..., n: if (a[v][i] == 1 and used[i] == 0): dfs(i);dfs(1);