結果
問題 | No.703 ゴミ拾い Easy |
ユーザー |
|
提出日時 | 2020-01-29 16:21:03 |
言語 | D (dmd 2.109.1) |
結果 |
AC
|
実行時間 | 348 ms / 1,500 ms |
コード長 | 3,212 bytes |
コンパイル時間 | 1,677 ms |
コンパイル使用メモリ | 147,100 KB |
実行使用メモリ | 59,472 KB |
最終ジャッジ日時 | 2024-06-22 04:44:37 |
合計ジャッジ時間 | 9,752 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 46 |
ソースコード
// URL: https://yukicoder.me/problems/no/703import std.algorithm, std.array, std.container, std.math, std.range, std.typecons, std.string;version(unittest) {} elsevoid main(){int n; io.getV(n);long[] a; io.getA(n, a);long[] x; io.getA(n, x);long[] y; io.getA(n, y);auto dp = new long[](n+1), cht = ConvexHullTrick!long();foreach (i; 0..n) {cht.add(-2*x[i], dp[i]+x[i]^^2+y[i]^^2);dp[i+1] = cht.query(a[i]) + a[i]^^2;}io.put(dp[n]);}struct ConvexHullTrick(T, alias comp = "a>=b"){import std.functional;alias compFun = binaryFun!comp;void add(T a, T b){auto line = Line(a, b);while (lines.length >= 2 && check(lines[$-2], lines[$-1], line))lines = lines[0..$-1];lines ~= line;}pure T query(T x){ptrdiff_t low = -1, high = lines.length-1;while (high-low > 1) {auto mid = (high+low)/2;(compFun(lines[mid].f(x), lines[mid+1].f(x)) ? low : high) = mid;}return lines[high].f(x);}private{struct Line{T a, b;auto opCmp(Line r){if (a < r.a) return -1;else if (a > r.a) return 1;if (b < r.b) return -1;else if (b > r.b) return 1;return 0;}auto f(T x) { return a*x+b; }}Line[] lines;bool check(Line l1, Line l2, Line l3){if (l1 < l3) swap(l1, l3);return (l3.b-l2.b)*(l2.a-l1.a) >= (l2.b-l1.b)*(l3.a-l2.a);}}}auto io = IO!()();import std.stdio;struct IO(string floatFormat = "%.10f", string delimiter = " ", alias IN = stdin, alias OUT = stdout){import std.conv, std.format, std.meta, std.traits;auto getV(T...)(ref T v) { foreach (ref w; v) get(w); }auto getA(T)(size_t n, ref T v) if (hasAssignableElements!T){ v = new T(n); foreach (ref w; v) get(w); }auto getC(T...)(size_t n, ref T v)if (allSatisfy!(hasAssignableElements, T)){foreach (ref w; v) w = new typeof(w)(n);foreach (i; 0..n) foreach (ref w; v) get(w[i]);}auto getM(T)(size_t r, size_t c, ref T v)if (hasAssignableElements!T && hasAssignableElements!(ElementType!T)){v = new T(r); foreach (ref w; v) getA(c, w);}template getS(E...){auto getS(T)(size_t n, ref T v){v = new T(n); foreach (ref w; v) foreach (e; E) mixin("get(w."~e~");");}}auto put(bool flush = false, T...)(T v){foreach (i, w; v) { putA(w); if (i < v.length-1) OUT.write(delimiter); }OUT.writeln;static if (flush) OUT.flush();}auto putB(S, T)(bool c, S t, T f) { if (c) put(t); else put(f); }auto putRaw(T...)(T v) { OUT.write(v); OUT.writeln; }private{dchar[] buf;auto sp = (new dchar[](0)).splitter;void nextLine() { IN.readln(buf); sp = buf.splitter; }auto get(T)(ref T v) { if (sp.empty) nextLine(); v = sp.front.to!T; sp.popFront(); }auto putR(T)(T v){auto w = v;while (!w.empty) { putA(w.front); w.popFront(); if (!w.empty) OUT.write(delimiter); }}auto putA(T)(T v){static if (isInputRange!T && !isSomeString!T) putR(v);else if (isFloatingPoint!T) OUT.write(format(floatFormat, v));else OUT.write(v);}}}