結果
| 問題 |
No.180 美しいWhitespace (2)
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2020-02-21 18:55:06 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
AC
|
| 実行時間 | 3 ms / 5,000 ms |
| コード長 | 4,662 bytes |
| コンパイル時間 | 894 ms |
| コンパイル使用メモリ | 124,656 KB |
| 実行使用メモリ | 6,944 KB |
| 最終ジャッジ日時 | 2024-06-22 05:22:04 |
| 合計ジャッジ時間 | 2,156 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 31 |
コンパイルメッセージ
Main.d(171): Deprecation: function `Main.IO!(makeGlobal, makeGlobal).IO.put!("{}", int).put.putMain!(c, int).putMain` function requires a dual-context, which is deprecated
Main.d-mixin-141(141): instantiated from here: `putMain!(c, int)`
Main.d(20): instantiated from here: `put!("{}", int)`
ソースコード
// URL: https://yukicoder.me/problems/no/180
import std.algorithm, std.array, std.bitmanip, std.container, std.conv, std.format,
std.functional, std.math, std.range, std.traits, std.typecons, std.stdio, std.string;
version(unittest) {} else
void main()
{
int N; io.getV(N);
struct L { long a, b; }
L[] l; io.getS!("a", "b")(N, l);
l.sort!"a.b<b.b";
auto cht1 = ConvexHullTrick!long(), cht2 = ConvexHullTrick!long();
foreach (li; l) cht1.add(-li.b, -li.a);
foreach_reverse (li; l) cht2.add(li.b, li.a);
auto f(int x) { return -cht1.query(x)-cht2.query(x); }
io.put(iota(1, int.max).upperBoundBy!(x => f(x+1)-f(x), "a<=b")(0).front);
}
pure nothrow @nogc @safe
{
auto lowerBoundBy(alias conv = "a", alias comp = "a<b", R, T)(const R a, const T v)
{
return a.sortedTuple!(conv, comp).lowerBound(tuple(a.front, v)).map!"a[0]";
}
auto upperBoundBy(alias conv = "a", alias comp = "a<b", R, T)(const R a, const T v)
{
return a.sortedTuple!(conv, comp).upperBound(tuple(a.front, v)).map!"a[0]";
}
auto sortedTuple(alias conv = "a", alias comp = "a<b", R)(const R a)
{
alias convFun = unaryFun!conv, compFun = binaryFun!comp;
return a.map!(e => tuple(e, convFun(e))).assumeSorted!((a, b) => compFun(a[1], b[1]));
}
}
struct ConvexHullTrick(T, alias comp = "a>=b")
{
pure nothrow @safe
{
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;
}
T query(T x)
{
ptrdiff_t low = -1, high = cast(ptrdiff_t)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
{
alias compFun = binaryFun!comp;
struct Line
{
T a, b;
auto opCmp(Line r) const
{
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;
pure nothrow @nogc @safe
{
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(alias IN = stdin, alias OUT = stdout)
{
import std.meta : allSatisfy;
import core.stdc.stdlib : exit;
void getV(T...)(ref T v)
{
foreach (ref w; v) get(w);
}
void getA(T)(size_t n, ref T v)
if (hasAssignableElements!T)
{
v = new T(n);
foreach (ref w; v) get(w);
}
void 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]);
}
void 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...)
{
void getS(T)(size_t n, ref T v)
{
v = new T(n);
foreach (ref w; v) foreach (e; E) mixin("get(w."~e~");");
}
}
const struct PutConf
{
bool newline = true, flush, exit;
string floatFormat = "%.10f", delimiter = " ";
}
void put(alias conf = "{}", T...)(T v)
{
mixin("const PutConf c = "~conf~"; putMain!c(v);");
}
void putB(alias conf = "{}", S, T)(bool c, S t, T f)
{
if (c) put!conf(t);
else put!conf(f);
}
void 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;
}
void get(T)(ref T v)
{
if (sp.empty) nextLine();
v = sp.front.to!T;
sp.popFront();
}
void putMain(PutConf c, T...)(T v)
{
foreach (i, w; v) {
putOne!c(w);
if (i+1 < v.length) OUT.write(c.delimiter);
}
static if (c.newline) OUT.writeln;
static if (c.flush) OUT.flush();
static if (c.exit) exit(0);
}
void putOne(PutConf c, T)(T v)
{
static if (isInputRange!T && !isSomeString!T) putRange!c(v);
else static if (isFloatingPoint!T) OUT.write(format(c.floatFormat, v));
else static if (hasMember!(T, "fprint")) v.fprint(OUT);
else OUT.write(v);
}
void putRange(PutConf c, T)(T v)
{
auto w = v;
while (!w.empty) {
putOne!c(w.front); w.popFront();
if (!w.empty) OUT.write(c.delimiter);
}
}
}
}