if !ENV['RUBY_THREAD_VM_STACK_SIZE'] exec({'RUBY_THREAD_VM_STACK_SIZE'=>'1000000000'}, '/usr/bin/ruby', $0) else N = gets.to_i E = Array.new(N + 1) { [] } (N - 1).times do a, b = gets.split.map(&:to_i) E[a] << b E[b] << a end DP1 = Array.new(N + 1) { [] } def dfs(v, parent, ans) r_cnt = 0 E[v].each do |u| next if u == parent r = dfs(u, v, ans) DP1[v] << r r_cnt += r end ans[v] += r_cnt if v < parent r_cnt += 1 end r_cnt end def r_dfs(v, cnt, parent, ans) if parent != -1 ans[v] += cnt end idx = 0 E[v].each_with_index do |u| next if u == parent if v < u cnt += 1 end nv = ans[v] - DP1[v][idx] nv += 1 if v < u r_dfs(u, nv, v, ans) idx += 1 if v < u cnt -= 1 end end end ans = Array.new(N + 1, 0) root = 1 dfs(root, -1, ans) r_dfs(root, ans[root], -1, ans) 1.upto(N) do |v| puts ans[v] end end