結果

問題 No.376 立方体のN等分 (2)
ユーザー 👑 obakyanobakyan
提出日時 2019-05-06 23:37:08
言語 Lua
(LuaJit 2.1.1696795921)
結果
AC  
実行時間 3,358 ms / 5,000 ms
コード長 2,275 bytes
コンパイル時間 69 ms
コンパイル使用メモリ 5,332 KB
実行使用メモリ 142,096 KB
最終ジャッジ日時 2023-09-10 23:31:41
合計ジャッジ時間 30,219 ms
ジャッジサーバーID
(参考情報)
judge13 / judge12
このコードへのチャレンジ(β)

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 1 ms
4,376 KB
testcase_01 AC 1 ms
4,380 KB
testcase_02 AC 391 ms
75,992 KB
testcase_03 AC 386 ms
75,900 KB
testcase_04 AC 469 ms
141,352 KB
testcase_05 AC 1 ms
4,380 KB
testcase_06 AC 2 ms
4,380 KB
testcase_07 AC 1 ms
4,380 KB
testcase_08 AC 13 ms
6,708 KB
testcase_09 AC 65 ms
20,712 KB
testcase_10 AC 280 ms
36,980 KB
testcase_11 AC 251 ms
71,752 KB
testcase_12 AC 304 ms
71,808 KB
testcase_13 AC 275 ms
71,892 KB
testcase_14 AC 303 ms
71,832 KB
testcase_15 AC 338 ms
71,864 KB
testcase_16 AC 2,908 ms
76,344 KB
testcase_17 AC 389 ms
75,776 KB
testcase_18 AC 430 ms
141,368 KB
testcase_19 AC 442 ms
141,644 KB
testcase_20 AC 448 ms
141,360 KB
testcase_21 AC 3,102 ms
141,580 KB
testcase_22 AC 499 ms
141,512 KB
testcase_23 AC 3,175 ms
141,712 KB
testcase_24 AC 2,766 ms
141,728 KB
testcase_25 AC 470 ms
141,436 KB
testcase_26 AC 3,358 ms
141,692 KB
testcase_27 AC 490 ms
141,464 KB
testcase_28 AC 488 ms
141,384 KB
testcase_29 AC 489 ms
141,444 KB
testcase_30 AC 485 ms
141,388 KB
testcase_31 AC 481 ms
141,516 KB
testcase_32 AC 488 ms
141,364 KB
testcase_33 AC 487 ms
141,384 KB
testcase_34 AC 484 ms
141,296 KB
testcase_35 AC 490 ms
141,444 KB
testcase_36 AC 488 ms
141,444 KB
testcase_37 AC 490 ms
141,392 KB
testcase_38 AC 491 ms
142,096 KB
testcase_39 AC 481 ms
141,372 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

local n = io.read("*n")

local function getprimes(x)
  local primes = {}
  local allnums = {}
  for i = 1, x do allnums[i] = true end
  for i = 2, x do
    if(allnums[i]) then
      table.insert(primes, i)
      local lim = math.floor(x / i)
      for j = 2, lim do
        allnums[j * i] = false
      end
    end
  end
  return primes
end

local function getdivisorparts(x, primes)
  local prime_num = #primes
  local tmp = {}
  local lim = math.ceil(math.sqrt(x))
  local primepos = 1
  local dv = primes[primepos]
  while(primepos <= prime_num and dv <= lim) do
    if(x % dv == 0) then
      local asdf = {}
      asdf.p = dv
      asdf.cnt = 1
      x = x / dv
      while(x % dv == 0) do
        x = x / dv
        asdf.cnt = asdf.cnt + 1
      end
      table.insert(tmp, asdf)
      lim = math.ceil(math.sqrt(x))
    end
    if(primepos == prime_num) then break end
    primepos = primepos + 1
    dv = primes[primepos]
  end
  if(x ~= 1) then
    local asdf = {}
    asdf.p, asdf.cnt = x, 1
    table.insert(tmp, asdf)
  end
  return tmp
end

local function getdivisor(divisorparts)
  local t = {}
  local pat = 1
  local len = #divisorparts
  local allpat = 1
  for i = 1, len do
    allpat = allpat * (divisorparts[i].cnt + 1)
  end
  for t_i_pat = 0, allpat - 1 do
    local div = allpat
    local i_pat = t_i_pat
    local ret = 1
    for i = 1, len do
      div = math.floor(div / (divisorparts[i].cnt + 1))
      local mul = math.floor(i_pat / div)
      i_pat = i_pat % div
      for j = 1, mul do ret = ret * divisorparts[i].p end
    end
    table.insert(t, ret)
  end
  table.sort(t)
  return t
end
local retmin, retmax = n - 1, n - 1
local primes = getprimes(math.ceil(math.sqrt(n)))
local divisorparts = getdivisorparts(n, primes)
local divisor = getdivisor(divisorparts)
local dmax = math.ceil(n^(1/3))
for i = 1, #divisor do
  if(dmax < divisor[i]) then break end
  local rem = math.floor(n / divisor[i])
  local remparts = getdivisorparts(rem, primes)
  local remdiv = getdivisor(remparts)
  local remlim = math.ceil(math.sqrt(rem))
  for j = 1, #remdiv do
    if(remlim < remdiv[j]) then break end
    local last = math.floor(rem / remdiv[j])
    retmin = math.min(retmin, divisor[i] + remdiv[j] + last - 3)
  end
end
print(retmin .. " " .. retmax)
0