結果
問題 | No.2458 Line Up Charged Balls |
ユーザー | 👑 hos.lyric |
提出日時 | 2023-09-01 22:04:23 |
言語 | D (dmd 2.106.1) |
結果 |
AC
|
実行時間 | 123 ms / 2,000 ms |
コード長 | 4,202 bytes |
コンパイル時間 | 2,901 ms |
コンパイル使用メモリ | 120,020 KB |
実行使用メモリ | 12,860 KB |
最終ジャッジ日時 | 2024-06-11 03:50:50 |
合計ジャッジ時間 | 5,881 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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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 | 1 ms
5,376 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 1 ms
5,376 KB |
testcase_04 | AC | 1 ms
5,376 KB |
testcase_05 | AC | 88 ms
12,860 KB |
testcase_06 | AC | 91 ms
12,712 KB |
testcase_07 | AC | 1 ms
5,376 KB |
testcase_08 | AC | 1 ms
5,376 KB |
testcase_09 | AC | 92 ms
11,732 KB |
testcase_10 | AC | 25 ms
5,592 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 55 ms
9,908 KB |
testcase_14 | AC | 48 ms
9,880 KB |
testcase_15 | AC | 28 ms
6,548 KB |
testcase_16 | AC | 102 ms
12,288 KB |
testcase_17 | AC | 103 ms
12,212 KB |
testcase_18 | AC | 102 ms
12,276 KB |
testcase_19 | AC | 104 ms
12,304 KB |
testcase_20 | AC | 116 ms
12,252 KB |
testcase_21 | AC | 103 ms
12,228 KB |
testcase_22 | AC | 115 ms
12,280 KB |
testcase_23 | AC | 123 ms
12,332 KB |
testcase_24 | AC | 120 ms
12,264 KB |
testcase_25 | AC | 113 ms
12,264 KB |
testcase_26 | AC | 105 ms
12,296 KB |
testcase_27 | AC | 114 ms
12,240 KB |
ソースコード
import std.conv, std.functional, std.range, std.stdio, std.string; import std.algorithm, std.array, std.bigint, std.bitmanip, std.complex, std.container, std.math, std.mathspecial, std.numeric, std.regex, std.typecons; import core.bitop; class EOFException : Throwable { this() { super("EOF"); } } string[] tokens; string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens.popFront; return token; } int readInt() { return readToken.to!int; } long readLong() { return readToken.to!long; } bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } } bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } } int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; } int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); } int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); } // class Func = TX -> TY // for any f, g: Func, x -> sgn(g(x) - f(x)) must be monotone class LiChaoTree(Func) { import std.algorithm : swap; alias TX = Func.TX; alias TY = Func.TY; const(TX) L, R; class Tree { Tree l, r; Func f; this(Func f) { this.f = f; } } Tree root; // [L, R) this(TX L, TX R) { assert(L < R, "LiChaoTree: L < R must hold"); this.L = L; this.R = R; } // Add g to the whole [L, R) void add(Func g) { root = add(root, L, R, g); } // Add g to [a, b) void add(TX a, TX b, Func g) { root = add(root, L, R, a, b, g); } // Get max at a TY opCall(TX a) { TY mx = TY.min; TX l = L, r = R; for (Tree u = root; u; ) { if (u.f) { const fX = u.f(a); if (mx < fX) mx = fX; } const mid = l + (r - l) / 2; if (a < mid) { u = u.l; r = mid; } else { u = u.r; l = mid; } } return mx; } private: Tree add(Tree u0, TX l, TX r, Func g) { if (!u0) return new Tree(g); TY gL = g(l), gR = g(r); for (Tree u = u0; ; ) { TY fL = u.f ? u.f(l) : TY.min, fR = u.f ? u.f(r) : TY.min; if (fL >= gL && fR >= gR) return u0; if (fL <= gL && fR <= gR) { u.f = g; return u0; } if (r - l == 1) { if (fL <= gL) { u.f = g; } return u0; } const mid = l + (r - l) / 2; TY fMid = u.f(mid), gMid = g(mid); if (fMid < gMid) { swap(u.f, g); if (!g) return u0; if (gL < fL) { if (!u.l) { u.l = new Tree(g); return u0; } u = u.l; r = mid; gL = fL; gR = fMid; } else { if (!u.r) { u.r = new Tree(g); return u0; } u = u.r; l = mid; gL = fMid; gR = fR; } } else { if (fL < gL) { if (!u.l) { u.l = new Tree(g); return u0; } u = u.l; r = mid; gR = gMid; } else { if (!u.r) { u.r = new Tree(g); return u0; } u = u.r; l = mid; gL = gMid; } } } } Tree add(Tree u, TX l, TX r, TX a, TX b, Func g) { if (b <= l || r <= a) return u; if (a <= l && r <= b) return add(u, l, r, g); if (u && u.f && u.f(l) >= g(l) && u.f(r) >= g(r)) return u; if (!u) u = new Tree(null); const mid = l + (r - l) / 2; u.l = add(u.l, l, mid, a, b, g); u.r = add(u.r, mid, r, a, b, g); return u; } } // y = p x + q class Line { alias TX = long; alias TY = long; long p, q; this(long p, long q) { this.p = p; this.q = q; } TY opCall(TX x) { return p * x + q; } } void main() { try { for (; ; ) { const N = readInt; auto Q = new long[N]; foreach (i; 0 .. N) { Q[i] = readLong; } const minQ = Q.minElement; const maxQ = Q.maxElement; auto lct = new LiChaoTree!Line(minQ, maxQ + 1); long ans = long.min; foreach (i; 0 .. N) { long res = lct(Q[i]); chmax(ans, res); chmax(res, 0); lct.add(new Line(Q[i], res)); } writeln(ans); } } catch (EOFException e) { } }