解答 #!/usr/bin/env ruby file = $stdin lines = file.readlines file.close t, n = lines[0].split.map{|x| x.to_i} m_list = lines[1, n].map{|x| x.to_i} max_sum = sum = m_list[0, t].inject(0){|sum, x| sum + x} for i in t..n - 1 sum += -m_list[i…