結果
問題 | No.2179 Planet Traveler |
ユーザー | obakyan |
提出日時 | 2023-02-18 11:31:55 |
言語 | Lua (LuaJit 2.1.1696795921) |
結果 |
AC
|
実行時間 | 1,701 ms / 3,000 ms |
コード長 | 2,890 bytes |
コンパイル時間 | 188 ms |
コンパイル使用メモリ | 5,504 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-07-19 23:06:27 |
合計ジャッジ時間 | 19,033 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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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
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 3 ms
5,376 KB |
testcase_08 | AC | 9 ms
5,376 KB |
testcase_09 | AC | 8 ms
5,376 KB |
testcase_10 | AC | 7 ms
5,376 KB |
testcase_11 | AC | 16 ms
5,376 KB |
testcase_12 | AC | 1,555 ms
5,376 KB |
testcase_13 | AC | 1,611 ms
5,376 KB |
testcase_14 | AC | 9 ms
5,376 KB |
testcase_15 | AC | 18 ms
5,376 KB |
testcase_16 | AC | 19 ms
5,376 KB |
testcase_17 | AC | 1,701 ms
5,376 KB |
testcase_18 | AC | 1,698 ms
5,376 KB |
testcase_19 | AC | 1,416 ms
5,376 KB |
testcase_20 | AC | 231 ms
5,376 KB |
testcase_21 | AC | 1,300 ms
5,376 KB |
testcase_22 | AC | 1,035 ms
5,376 KB |
testcase_23 | AC | 913 ms
5,376 KB |
testcase_24 | AC | 1,380 ms
5,376 KB |
testcase_25 | AC | 1,080 ms
5,376 KB |
testcase_26 | AC | 1,531 ms
5,376 KB |
testcase_27 | AC | 199 ms
5,376 KB |
testcase_28 | AC | 600 ms
5,376 KB |
testcase_29 | AC | 1,159 ms
5,376 KB |
ソースコード
local msq = math.sqrt 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 n = io.read("*n") local x, y, t = {}, {}, {} local inf = 1000000007 * 4 local len = {} local asked = {} for i = 1, n do x[i], y[i], t[i] = io.read("*n", "*n", "*n") 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 function sqrtceil(v) local z = mma(0, mfl(msq(v)) - 2) while true do if v <= z * z then return z end z = z + 1 end end local function sqrtfloor(v) local l, r = 0LL, 1600000001LL while 1LL < r - l do local m = (l + r) / 2LL if m * m <= v then l = m else r = m end end return l end local function getlen1(a, b) local v1 = x[a] * x[a] + y[a] * y[a] local v2 = x[b] * x[b] + y[b] * y[b] local z = sqrtfloor(4LL * v1 * v2) z = tostring(z):gsub("LL", "") z = tonumber(z) -- print(v1, v2, z) return v1 + v2 - z end -- print("a", getlen1(1, 2)) -- os.exit() local function getlen2(a, b) local v = (x[a] - x[b]) * (x[a] - x[b]) + (y[a] - y[b]) * (y[a] - y[b]) return v end local st = SegTree.new(n, mergefunc, n + 1) 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) for dst = 1, n do local cost = t[src] ~= t[dst] and getlen1(src, dst) or getlen2(src, dst) cost = mma(cost, len[src]) if cost < len[dst] then len[dst] = cost st:update(dst) end end end print(len[n])