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サイゼリヤで1000円あれば最大何kcal摂れるのか
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# coding: utf-8 | |
require 'csv' | |
budget = 1000 | |
menu = [] | |
# https://raw.githubusercontent.com/hodaka0714/saize_calory_maxmization/master/menu.csv | |
CSV.foreach('menu.csv') do |row| | |
menu << row | |
end | |
dp = Array.new(menu.size + 1) { Array.new(budget + 1, -1) } | |
def solv(dp, menu, yen, i) | |
return 0 if i.zero? | |
return dp[i][yen] if dp[i][yen] != -1 | |
ret = 0 | |
ret = [solv(dp, menu, yen, i - 1), ret].max | |
if yen - menu[i-1][4].to_i >= 0 | |
ret = [solv(dp, menu, yen - menu[i-1][4].to_i, i-1) + menu[i-1][5].to_i, | |
ret].max | |
end | |
dp[i][yen] = ret | |
ret | |
end | |
def disp(dp, menu, yen, i) | |
return if yen <= 0 | |
return if i <= 0 | |
if yen >= menu[i-1][4].to_i && | |
dp[i][yen] == dp[i-1][yen - menu[i-1][4].to_i] + menu[i-1][5].to_i | |
puts "%-25s%5s円%5skcal" % [menu[i-1][1], menu[i-1][4], menu[i-1][5]] | |
yen -= menu[i-1][4].to_i | |
end | |
disp(dp, menu, yen, i-1) | |
end | |
ret = solv(dp, menu, budget, menu.size) | |
disp(dp, menu, budget, menu.size) | |
puts "#{ret}kcal" |
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ラージライス 219円 454kcal
アーリオ・オーリオ(Wサイズ) 574円 1120kcal
ポテトのグリル 199円 366kcal
1940kcal