結果
問題 | No.1283 Extra Fee |
ユーザー | 👑 obakyan |
提出日時 | 2021-08-10 19:13:47 |
言語 | Lua (LuaJit 2.1.1696795921) |
結果 |
AC
|
実行時間 | 822 ms / 2,000 ms |
コード長 | 2,886 bytes |
コンパイル時間 | 44 ms |
コンパイル使用メモリ | 6,944 KB |
実行使用メモリ | 21,376 KB |
最終ジャッジ日時 | 2024-11-16 08:32:10 |
合計ジャッジ時間 | 11,246 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
(要ログイン)
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 | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 4 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 2 ms
5,248 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 4 ms
5,248 KB |
testcase_07 | AC | 4 ms
5,248 KB |
testcase_08 | AC | 3 ms
5,248 KB |
testcase_09 | AC | 4 ms
5,248 KB |
testcase_10 | AC | 3 ms
5,248 KB |
testcase_11 | AC | 29 ms
5,248 KB |
testcase_12 | AC | 37 ms
5,248 KB |
testcase_13 | AC | 29 ms
5,248 KB |
testcase_14 | AC | 119 ms
7,424 KB |
testcase_15 | AC | 193 ms
12,032 KB |
testcase_16 | AC | 40 ms
5,248 KB |
testcase_17 | AC | 586 ms
21,304 KB |
testcase_18 | AC | 721 ms
21,248 KB |
testcase_19 | AC | 733 ms
21,376 KB |
testcase_20 | AC | 657 ms
21,192 KB |
testcase_21 | AC | 679 ms
21,248 KB |
testcase_22 | AC | 617 ms
21,056 KB |
testcase_23 | AC | 698 ms
21,248 KB |
testcase_24 | AC | 699 ms
21,248 KB |
testcase_25 | AC | 771 ms
21,204 KB |
testcase_26 | AC | 763 ms
21,248 KB |
testcase_27 | AC | 822 ms
21,172 KB |
testcase_28 | AC | 764 ms
21,256 KB |
testcase_29 | AC | 633 ms
21,328 KB |
ソースコード
local mfl, mce = math.floor, math.ceil local mmi, mma = math.min, math.max local pow2 = {1} for i = 2, 28 do pow2[i] = pow2[i - 1] * 2 end local SegTree = {} SegTree.updateAll = function(self) for i = self.stagenum - 1, 1, -1 do local cnt = pow2[i] for j = 0, cnt - 1 do self.stage[cnt + j] = self.func(self.stage[(cnt + j) * 2], self.stage[(cnt + j) * 2 + 1]) end end end SegTree.create = function(self, n, func, emptyvalue) self.func, self.emptyvalue = func, emptyvalue local stagenum, mul = 1, 1 self.stage = {} -- use 1D Tree (stage[], not stage[][]) while mul < n do mul, stagenum = mul * 2, stagenum + 1 end self.stagenum = stagenum for i = 1, mul * 2 - 1 do self.stage[i] = emptyvalue end for i = 1, n do self.stage[mul + i - 1] = i end self:updateAll() end SegTree.update = function(self, idx, force) idx = idx + pow2[self.stagenum] - 1 for i = self.stagenum - 1, 1, -1 do local dst = mfl(idx / 2) local rem = dst * 4 + 1 - idx self.stage[dst] = self.func(self.stage[idx], self.stage[rem]) if not force and self.stage[dst] ~= self.stage[idx] then break end 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 sz, m = io.read("*n", "*n") local t = {} for i = 1, sz * sz do t[i] = 0 end for i = 1, m do local a, b, c = io.read("*n", "*n", "*n") t[(a - 1) * sz + b] = c end local n = sz * sz * 2 local inf = 1000000007 * 2000 local len = {} local asked = {} for i = 1, n do len[i] = inf asked[i] = false end len[1] = 0 asked[n + 1] = true local function mergefunc(x, y) if asked[x] then return y elseif asked[y] then return x else return len[x] < len[y] and x or y end end local st = SegTree.new(n, mergefunc, n + 1) local function walk(curcost, dst) if dst <= sz * sz then if curcost + 1 + t[dst] < len[dst] then len[dst] = curcost + 1 + t[dst] st:update(dst) end if curcost + 1 < len[dst + sz * sz] then len[dst + sz * sz] = curcost + 1 st:update(dst + sz * sz) end else if curcost + 1 + t[dst - sz * sz] < len[dst] then len[dst] = curcost + 1 + t[dst - sz * sz] st:update(dst) end end end for i = 1, n do local src = st.stage[1] if asked[src] then break end if inf <= len[src] then break end asked[src] = true st:update(src, true) local rawsrc = src local front = src <= sz * sz if not front then rawsrc = rawsrc - sz * sz end local row = mce(rawsrc / sz) local col = rawsrc - (row - 1) * sz local curlen = len[src] if 1 < row then walk(curlen, src - sz) end if row < sz then walk(curlen, src + sz) end if 1 < col then walk(curlen, src - 1) end if col < sz then walk(curlen, src + 1) end end print(len[n]) -- test: https://yukicoder.me/problems/no/1065