結果

問題 No.324 落ちてた閉路グラフ
ユーザー 👑 obakyan
提出日時 2021-06-13 19:45:19
言語 Lua
(LuaJit 2.1.1734355927)
結果
AC  
実行時間 34 ms / 5,000 ms
コード長 1,342 bytes
コンパイル時間 319 ms
コンパイル使用メモリ 6,692 KB
実行使用メモリ 5,248 KB
最終ジャッジ日時 2024-12-23 09:21:39
合計ジャッジ時間 1,674 ms
ジャッジサーバーID
(参考情報)
judge4 / judge2
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 4
other AC * 34
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 mmi, mma = math.min, math.max
local n, m = io.read("*n", "*n")
local w = {}
for i = 1, n do
w[i] = io.read("*n")
end
if m == 0 then print(0) os.exit() end
local inf = 1000000007
local dp1a, dp1b = {}, {}
local dp2a, dp2b = {}, {}
dp1a[1] = 0
dp1b[1] = -inf
for i = 2, n do
local srca = i % 2 == 0 and dp1a or dp2a
local srcb = i % 2 == 0 and dp1b or dp2b
local dsta = i % 2 == 0 and dp2a or dp1a
local dstb = i % 2 == 0 and dp2b or dp1b
dsta[1] = -inf
for j = 2, i do
dsta[j] = mma(srca[j - 1] + w[i - 1], srcb[j - 1])
if i == n then
dsta[j] = dsta[j] + w[n]
end
end
for j = 1, i - 1 do
dstb[j] = mma(srca[j], srcb[j])
end
dstb[i] = -inf
end
local tbla = n % 2 == 0 and dp2a or dp1a
local tblb = n % 2 == 0 and dp2b or dp1b
local ret = mma(tbla[m], tblb[m])
dp1a[1] = -inf
dp1b[1] = -inf
for i = 2, n do
local srca = i % 2 == 0 and dp1a or dp2a
local srcb = i % 2 == 0 and dp1b or dp2b
local dsta = i % 2 == 0 and dp2a or dp1a
local dstb = i % 2 == 0 and dp2b or dp1b
dsta[1] = 0
for j = 2, i - 1 do
dsta[j] = mma(srca[j - 1] + w[i - 1], srcb[j - 1])
end
dsta[i] = -inf
for j = 1, i - 1 do
dstb[j] = mma(srca[j], srcb[j])
end
dstb[i] = -inf
end
tbla = n % 2 == 0 and dp2a or dp1a
tblb = n % 2 == 0 and dp2b or dp1b
ret = mma(ret, tbla[m], tblb[m])
print(ret)
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0