結果

問題 No.318 学学学学学
ユーザー 👑 obakyan
提出日時 2020-05-02 16:21:30
言語 Lua
(LuaJit 2.1.1734355927)
結果
AC  
実行時間 369 ms / 2,000 ms
コード長 3,043 bytes
コンパイル時間 341 ms
コンパイル使用メモリ 5,504 KB
実行使用メモリ 40,688 KB
最終ジャッジ日時 2024-12-30 09:39:14
合計ジャッジ時間 6,539 ms
ジャッジサーバーID
(参考情報)
judge5 / judge3
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 26
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 #
プレゼンテーションモードにする

local mfl, mce = math.floor, math.ceil
local mmi, mma = math.min, math.max
local bls, brs = bit.lshift, bit.rshift
local SegTree = {}
SegTree.updateAll = function(self)
for i = self.stagenum - 1, 1, -1 do
local cnt = bls(1, i - 1)
for j = 1, cnt do
self.stage[i][j] = self.func(self.stage[i + 1][j * 2 - 1], self.stage[i + 1][j * 2])
end
end
end
SegTree.create = function(self, n, func, emptyvalue)
self.func, self.emptyvalue = func, emptyvalue
local stagenum, mul = 1, 1
self.stage = {{}}
while mul < n do
mul, stagenum = mul * 2, stagenum + 1
self.stage[stagenum] = {}
end
self.stagenum = stagenum
self.left_stage = {}
for i = 1, n do
local sp, sz = 1, bls(1, stagenum - 1)
while(i - 1) % sz ~= 0 do
sp, sz = sp + 1, brs(sz, 1)
end
self.left_stage[i] = sp
end
self.sz_stage = {}
local tmp, sp = 1, stagenum
for i = 1, n do
if tmp * 2 == i then tmp, sp = tmp * 2, sp - 1 end
self.sz_stage[i] = sp
end
for i = 1, n do self.stage[stagenum][i] = i end
for i = n + 1, mul do self.stage[stagenum][i] = emptyvalue end
self:updateAll()
end
SegTree.getRange = function(self, left, right)
if left == right then return self.stage[self.stagenum][left] end
local stagenum = self.stagenum
local ret = self.emptyvalue
while left <= right do
local stage = mma(self.left_stage[left], self.sz_stage[right - left + 1])
local sz = bls(1, stagenum - stage)
ret = self.func(ret, self.stage[stage][1 + brs(left - 1, stagenum - stage)])
left = left + sz
end
return ret
end
SegTree.update = function(self, idx)
for i = self.stagenum - 1, 1, -1 do
local dst = brs(idx + 1, 1)
local rem = dst * 4 - 1 - idx
self.stage[i][dst] = self.func(self.stage[i + 1][idx], self.stage[i + 1][rem])
idx = dst
end
end
SegTree.new = function(n, func, emptyvalue)
local obj = {}
setmetatable(obj, {__index = SegTree})
obj:create(n, func, emptyvalue)
return obj
end
local n = io.read("*n")
local spos, epos = {}, {}
local uniqtbl = {}
for i = 1, n do
local a = io.read("*n")
if not spos[a] then
spos[a] = i
epos[a] = i + 1
table.insert(uniqtbl, a)
else
epos[a] = i + 1
end
end
table.sort(uniqtbl)
local m = #uniqtbl
local sevent = {}
local eevent = {}
for i = 1, n + 1 do
sevent[i] = {}
eevent[i] = {}
end
local state = {}
for i = 1, m do
state[i] = false
local aval = uniqtbl[i]
local sp, ep = spos[aval], epos[aval]
table.insert(sevent[sp], i)
table.insert(eevent[ep], i)
end
state[m + 1] = false
local function mergefunc(a, b)
if not state[a] then return b
elseif not state[b] then return a
else
return a < b and b or a
end
end
local st = SegTree.new(m, mergefunc, m + 1)
for i = 1, n do
for j = 1, #sevent[i] do
state[sevent[i][j]] = true
st:update(sevent[i][j])
end
for j = 1, #eevent[i] do
state[eevent[i][j]] = false
st:update(eevent[i][j])
end
local v = st.stage[1][1]
local aval = uniqtbl[v]
io.write(aval)
io.write(i == n and "\n" or " ")
end
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
0