結果
| 問題 | No.2169 To Arithmetic |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2022-12-28 02:07:10 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
AC
|
| 実行時間 | 307 ms / 2,000 ms |
| コード長 | 3,113 bytes |
| コンパイル時間 | 1,098 ms |
| コンパイル使用メモリ | 136,244 KB |
| 実行使用メモリ | 24,544 KB |
| 最終ジャッジ日時 | 2024-06-22 17:10:59 |
| 合計ジャッジ時間 | 8,854 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 25 |
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)); }
void main() {
try {
for (; ; ) {
const N = readInt;
const Q = readInt;
auto A = new long[N];
foreach (i; 0 .. N) {
A[i] = readLong;
}
auto D = new long[Q];
foreach (q; 0 .. Q) {
D[q] = readLong;
}
// max_i (A[i] - d i)
int len;
auto que = new int[N];
foreach (i; 0 .. N) {
for (; len >= 2; ) {
const i2 = que[len - 2];
const i1 = que[len - 1];
if ((i1 - i2) * (A[i] - A[i1]) - (A[i1] - A[i2]) * (i - i1) >= 0) {
--len;
} else {
break;
}
}
que[len++] = i;
}
debug {
writeln("que = ", que[0 .. len]);
}
/*
A[i] - d i < A[i+1] - d (i+1)
<=> A[i+1] - A[i] > d
*/
auto bs = new long[N - 1];
foreach (i; 0 .. N - 1) {
bs[i] = A[i + 1] - A[i];
}
bs.sort;
auto bsSum = new long[N];
foreach (i; 0 .. N - 1) {
bsSum[i + 1] = bsSum[i] + bs[i];
}
alias DQ = Tuple!(long, "d", int, "q");
auto dqs = new DQ[Q];
foreach (q; 0 .. Q) {
dqs[q] = DQ(D[q], q);
}
dqs.sort;
auto ans = new long[Q];
foreach (ref dq; dqs) {
const d = dq.d, q = dq.q;
for (; len >= 2; ) {
const i2 = que[len - 2];
const i1 = que[len - 1];
if (A[i2] - d * i2 >= A[i1] - d * i1) {
--len;
} else {
break;
}
}
const i1 = que[len - 1];
const mx = A[i1] - d * i1;
ans[q] += (mx - (A[N - 1] - d * (N - 1)));
const pos = bs.lowerBound(d);
ans[q] += (bsSum[N - 1] - bsSum[pos]) - d * ((N - 1) - pos);
}
foreach (q; 0 .. Q) {
writeln(ans[q]);
}
debug {
writeln("========");
}
}
} catch (EOFException e) {
}
}