結果
問題 | No.1332 Range Nearest Query |
ユーザー |
👑 |
提出日時 | 2021-01-08 22:41:45 |
言語 | D (dmd 2.109.1) |
結果 |
AC
|
実行時間 | 451 ms / 2,500 ms |
コード長 | 4,194 bytes |
コンパイル時間 | 1,037 ms |
コンパイル使用メモリ | 132,224 KB |
実行使用メモリ | 34,200 KB |
最終ジャッジ日時 | 2024-06-22 10:35:23 |
合計ジャッジ時間 | 18,781 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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ファイルパターン | 結果 |
---|---|
other | AC * 48 |
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; }real readReal() { return readToken.to!real; }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)); }// T: monoid// op: T * T -> T// query(a, b): returns t_a ... t_{b-1}class SegmentTree(T, alias op) {import std.functional : binaryFun;alias opFun = binaryFun!op;const(T) idT;int n;T[] ts;this(int n_, const(T) idT) {this.idT = idT;for (n = 1; n < n_; n <<= 1) {}ts = new T[n << 1];ts[] = idT;}this(inout(T)[] ts_, const(T) idT) {this.idT = idT;const n_ = cast(int)(ts_.length);for (n = 1; n < n_; n <<= 1) {}ts = new T[n << 1];ts[0 .. n] = idT;ts[n .. n + n_] = ts_[];ts[n + n_ .. n << 1] = idT;build();}ref T at(int a) {return ts[n + a];}void build() {foreach_reverse (a; 1 .. n) ts[a] = opFun(ts[a << 1], ts[a << 1 | 1]);}void set(int a, const(T) val) {ts[a += n] = val;for (; a >>= 1; ) ts[a] = opFun(ts[a << 1], ts[a << 1 | 1]);}void mulL(int a, const(T) val) {set(a, opFun(val, ts[a + n]));}void mulR(int a, const(T) val) {set(a, opFun(ts[a + n], val));}T query(int a, int b) const {T prodL = idT, prodR = idT;for (a += n, b += n; a < b; a >>= 1, b >>= 1) {if (a & 1) prodL = opFun(prodL, ts[a++]);if (b & 1) prodR = opFun(ts[--b], prodR);}return opFun(prodL, prodR);}}enum INF = 10^^9 + 1000;void main() {try {for (; ; ) {const N = readInt();auto X = new int[N];foreach (i; 0 .. N) {X[i] = readInt();}const Q = readInt();auto L = new int[Q];auto R = new int[Q];auto Y = new int[Q];foreach (q; 0 .. Q) {L[q] = readInt() - 1;R[q] = readInt();Y[q] = readInt();}alias Entry = Tuple!(int, "val", int, "key");auto xs = new Entry[N];foreach (i; 0 .. N) {xs[i] = Entry(X[i], i);}xs.sort;auto ys = new Entry[Q];foreach (q; 0 .. Q) {ys[q] = Entry(Y[q], q);}ys.sort;auto ans = new int[Q];ans[] = INF;{auto seg = new SegmentTree!(int, max)(N, -INF);int pos = 0;foreach (ref f; ys) {const q = f.key;for (; pos < N && xs[pos].val <= Y[q]; ) {const i = xs[pos++].key;seg.set(i, X[i]);}const res = seg.query(L[q], R[q]);if (res > -INF) {chmin(ans[q], Y[q] - res);}}}debug {writeln("ans = ", ans);}{auto seg = new SegmentTree!(int, min)(N, +INF);int pos = N;foreach_reverse (ref f; ys) {const q = f.key;for (; pos > 0 && xs[pos - 1].val >= Y[q]; ) {const i = xs[--pos].key;seg.set(i, X[i]);}const res = seg.query(L[q], R[q]);if (res < +INF) {chmin(ans[q], res - Y[q]);}}}foreach (q; 0 .. Q) {writeln(ans[q]);}}} catch (EOFException e) {}}