結果
問題 | No.1065 電柱 / Pole (Easy) |
ユーザー | 👑 obakyan |
提出日時 | 2020-11-22 15:10:02 |
言語 | Lua (LuaJit 2.1.1696795921) |
結果 |
AC
|
実行時間 | 690 ms / 2,000 ms |
コード長 | 2,328 bytes |
コンパイル時間 | 281 ms |
コンパイル使用メモリ | 6,820 KB |
実行使用メモリ | 44,672 KB |
最終ジャッジ日時 | 2024-07-23 16:31:51 |
合計ジャッジ時間 | 13,898 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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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 | 1 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 303 ms
23,936 KB |
testcase_03 | AC | 352 ms
39,040 KB |
testcase_04 | AC | 353 ms
39,040 KB |
testcase_05 | AC | 318 ms
39,040 KB |
testcase_06 | AC | 309 ms
39,040 KB |
testcase_07 | AC | 124 ms
12,928 KB |
testcase_08 | AC | 505 ms
41,856 KB |
testcase_09 | AC | 47 ms
6,944 KB |
testcase_10 | AC | 240 ms
20,992 KB |
testcase_11 | AC | 143 ms
13,952 KB |
testcase_12 | AC | 46 ms
6,944 KB |
testcase_13 | AC | 285 ms
24,480 KB |
testcase_14 | AC | 335 ms
27,632 KB |
testcase_15 | AC | 400 ms
29,084 KB |
testcase_16 | AC | 167 ms
14,592 KB |
testcase_17 | AC | 431 ms
30,768 KB |
testcase_18 | AC | 119 ms
12,032 KB |
testcase_19 | AC | 424 ms
30,636 KB |
testcase_20 | AC | 108 ms
12,348 KB |
testcase_21 | AC | 139 ms
13,056 KB |
testcase_22 | AC | 375 ms
29,620 KB |
testcase_23 | AC | 5 ms
6,940 KB |
testcase_24 | AC | 6 ms
6,940 KB |
testcase_25 | AC | 41 ms
6,944 KB |
testcase_26 | AC | 201 ms
15,236 KB |
testcase_27 | AC | 193 ms
15,648 KB |
testcase_28 | AC | 342 ms
25,436 KB |
testcase_29 | AC | 37 ms
6,944 KB |
testcase_30 | AC | 385 ms
26,140 KB |
testcase_31 | AC | 270 ms
21,760 KB |
testcase_32 | AC | 162 ms
14,004 KB |
testcase_33 | AC | 361 ms
24,748 KB |
testcase_34 | AC | 121 ms
10,608 KB |
testcase_35 | AC | 389 ms
26,208 KB |
testcase_36 | AC | 5 ms
6,944 KB |
testcase_37 | AC | 7 ms
6,940 KB |
testcase_38 | AC | 6 ms
6,940 KB |
testcase_39 | AC | 6 ms
6,940 KB |
testcase_40 | AC | 4 ms
6,940 KB |
testcase_41 | AC | 690 ms
44,672 KB |
testcase_42 | AC | 169 ms
14,976 KB |
testcase_43 | AC | 326 ms
24,576 KB |
testcase_44 | AC | 103 ms
11,776 KB |
testcase_45 | AC | 321 ms
24,192 KB |
testcase_46 | AC | 1 ms
6,944 KB |
testcase_47 | AC | 1 ms
6,940 KB |
ソースコード
-- use a 1D Seg class ( stage[], not stage[][]) 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 = {} 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, m = io.read("*n", "*n") local x, y = io.read("*n", "*n") local p, q = {}, {} local edge = {} for i = 1, n do p[i], q[i] = io.read("*n", "*n") edge[i] = {} end for i = 1, m do local s, t = io.read("*n", "*n") local zzz = (p[s] - p[t]) * (p[s] - p[t]) + (q[s] - q[t]) * (q[s] - q[t]) zzz = math.sqrt(zzz) edge[s][t], edge[t][s] = zzz, zzz end local inf = 1000000007 local len = {} local asked = {} for i = 1, n do len[i] = inf asked[i] = false end len[x] = 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) 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, cost in pairs(edge[src]) do if len[src] + cost < len[dst] then len[dst] = len[src] + cost st:update(dst) end end end print(len[y])