数字版のinclude? はないのか？ - Qiita

n = gets.to_i d_1,p_1 = Array.new(n){gets.chomp.split(' ').map{|i| i.to_i}}.transpose p = 0 c = 0 while n > 0 do if d_1[c].to_s.include?("3") p += (p_1[c] * 0.03).floor elsif d_1[c].to_s.include?("5") p += (p_1[c] * 0.05).floor else p += (p_1[c] * 0.01).floor end c = c + 1 n = n - 1 end puts p