https://atcoder.jp/contests/abc175 過去問。 A: Rainy Season puts gets.chomp.each_char.chunk {|e| e == "R"} .map {|b, ary| b ? ary.size : 0}.max B: Making Triangle n = gets.to_i ls = gets.split.map(&:to_i) puts ls.combination(3).count {|li,…

https://atcoder.jp/contests/abc174 過去問。 A: Air Conditioner x = gets.to_i puts (x >= 30) ? "Yes" : "No" B: Distance n, d = gets.split.map(&:to_i) coordinates = n.times.map {gets.split.map(&:to_i)} puts coordinates.count {|x, y| x * x + …