結果
問題 | No.409 ダイエット |
ユーザー | Grenache |
提出日時 | 2018-03-03 00:49:45 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 772 ms / 2,000 ms |
コード長 | 9,024 bytes |
コンパイル時間 | 4,654 ms |
コンパイル使用メモリ | 89,388 KB |
実行使用メモリ | 90,216 KB |
最終ジャッジ日時 | 2023-09-08 17:44:08 |
合計ジャッジ時間 | 34,028 ms |
ジャッジサーバーID (参考情報) |
judge11 / judge15 |
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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 | 53 ms
50,252 KB |
testcase_01 | AC | 53 ms
50,024 KB |
testcase_02 | AC | 52 ms
50,160 KB |
testcase_03 | AC | 51 ms
50,544 KB |
testcase_04 | AC | 50 ms
50,384 KB |
testcase_05 | AC | 52 ms
48,576 KB |
testcase_06 | AC | 51 ms
50,152 KB |
testcase_07 | AC | 51 ms
50,236 KB |
testcase_08 | AC | 51 ms
50,036 KB |
testcase_09 | AC | 51 ms
50,416 KB |
testcase_10 | AC | 51 ms
50,040 KB |
testcase_11 | AC | 54 ms
50,164 KB |
testcase_12 | AC | 51 ms
50,160 KB |
testcase_13 | AC | 51 ms
50,140 KB |
testcase_14 | AC | 52 ms
50,392 KB |
testcase_15 | AC | 53 ms
50,120 KB |
testcase_16 | AC | 52 ms
50,308 KB |
testcase_17 | AC | 51 ms
50,240 KB |
testcase_18 | AC | 52 ms
50,136 KB |
testcase_19 | AC | 51 ms
50,388 KB |
testcase_20 | AC | 53 ms
48,608 KB |
testcase_21 | AC | 50 ms
50,120 KB |
testcase_22 | AC | 50 ms
50,576 KB |
testcase_23 | AC | 51 ms
50,748 KB |
testcase_24 | AC | 50 ms
50,556 KB |
testcase_25 | AC | 53 ms
50,140 KB |
testcase_26 | AC | 51 ms
50,104 KB |
testcase_27 | AC | 52 ms
50,132 KB |
testcase_28 | AC | 52 ms
51,020 KB |
testcase_29 | AC | 52 ms
50,140 KB |
testcase_30 | AC | 54 ms
50,060 KB |
testcase_31 | AC | 52 ms
50,044 KB |
testcase_32 | AC | 52 ms
50,028 KB |
testcase_33 | AC | 52 ms
50,300 KB |
testcase_34 | AC | 52 ms
50,160 KB |
testcase_35 | AC | 112 ms
54,024 KB |
testcase_36 | AC | 113 ms
54,092 KB |
testcase_37 | AC | 119 ms
53,592 KB |
testcase_38 | AC | 119 ms
54,136 KB |
testcase_39 | AC | 118 ms
54,380 KB |
testcase_40 | AC | 123 ms
54,396 KB |
testcase_41 | AC | 122 ms
53,916 KB |
testcase_42 | AC | 126 ms
54,220 KB |
testcase_43 | AC | 122 ms
54,264 KB |
testcase_44 | AC | 119 ms
53,388 KB |
testcase_45 | AC | 112 ms
54,072 KB |
testcase_46 | AC | 120 ms
53,644 KB |
testcase_47 | AC | 122 ms
54,124 KB |
testcase_48 | AC | 124 ms
53,904 KB |
testcase_49 | AC | 121 ms
53,796 KB |
testcase_50 | AC | 125 ms
54,048 KB |
testcase_51 | AC | 119 ms
54,040 KB |
testcase_52 | AC | 123 ms
54,392 KB |
testcase_53 | AC | 121 ms
54,336 KB |
testcase_54 | AC | 119 ms
53,796 KB |
testcase_55 | AC | 473 ms
71,252 KB |
testcase_56 | AC | 305 ms
71,472 KB |
testcase_57 | AC | 707 ms
90,216 KB |
testcase_58 | AC | 455 ms
70,236 KB |
testcase_59 | AC | 568 ms
77,472 KB |
testcase_60 | AC | 412 ms
68,504 KB |
testcase_61 | AC | 648 ms
83,172 KB |
testcase_62 | AC | 697 ms
84,132 KB |
testcase_63 | AC | 657 ms
84,180 KB |
testcase_64 | AC | 455 ms
69,024 KB |
testcase_65 | AC | 660 ms
79,656 KB |
testcase_66 | AC | 671 ms
84,776 KB |
testcase_67 | AC | 598 ms
80,444 KB |
testcase_68 | AC | 528 ms
74,828 KB |
testcase_69 | AC | 664 ms
82,368 KB |
testcase_70 | AC | 688 ms
84,068 KB |
testcase_71 | AC | 512 ms
69,564 KB |
testcase_72 | AC | 772 ms
90,084 KB |
testcase_73 | AC | 702 ms
82,492 KB |
testcase_74 | AC | 569 ms
77,784 KB |
testcase_75 | AC | 755 ms
83,572 KB |
testcase_76 | AC | 603 ms
80,132 KB |
testcase_77 | AC | 498 ms
68,756 KB |
testcase_78 | AC | 548 ms
76,764 KB |
testcase_79 | AC | 446 ms
68,988 KB |
testcase_80 | AC | 750 ms
85,956 KB |
testcase_81 | AC | 697 ms
82,888 KB |
testcase_82 | AC | 607 ms
79,936 KB |
testcase_83 | AC | 718 ms
79,976 KB |
testcase_84 | AC | 599 ms
75,036 KB |
testcase_85 | AC | 204 ms
58,292 KB |
testcase_86 | AC | 551 ms
73,756 KB |
testcase_87 | AC | 691 ms
84,648 KB |
testcase_88 | AC | 417 ms
66,388 KB |
testcase_89 | AC | 588 ms
68,748 KB |
testcase_90 | AC | 409 ms
66,452 KB |
testcase_91 | AC | 612 ms
70,592 KB |
ソースコード
import java.io.*; import java.util.*; public class Main_yukicoder409 { private static Scanner sc; private static Printer pr; private static void solve() { int n = sc.nextInt(); long a = sc.nextInt(); long b = sc.nextInt(); long w = sc.nextInt(); int[] d = new int[n]; for (int i = 0; i < n; i++) { d[i] = sc.nextInt(); } long[] dp = new long[n + 1]; ConvexHullTrick cht = new ConvexHullTrick(n); for (int i = 1; i <= n; i++) { int j = i - 1; cht.add(-b * j, dp[j] + a * j + b * j * (j + 1) / 2); dp[i] = cht.query(i) + d[i - 1] - a * (i - 1) + b * i * (i - 1) / 2; } long ans = Long.MAX_VALUE; for (int i = 0; i <= n; i++) { long tmp = dp[i] - a * (n - i) + b * (n - i) * (n - i + 1) / 2; // pr.printf("%d %d %d\n", i, tmp, ans); ans = Math.min(ans, tmp); } pr.println(ans + w); } private static class ConvexHullTrick { // int n; int cnt; long[] aa; long[] bb; long[] left; NavigableSet<Integer> f; // NavigableSet<Integer> d; // TreeSet で利用する Comparator 内で利用する。直線の傾きなら true、左端の座標なら false boolean cmpf; // add, query ともに特別な条件がない一般 ConvexHullTrick // 追加できる直線は n 本まで。 ConvexHullTrick(int n) { // this.n = n; cnt = 0; aa = new long[n]; bb = new long[n]; // i番目の直線と1つ前の直線との交点のx座標。0番目は-INF left = new long[n + 1]; cmpf = true; // 必要な直線を傾きの降順に保持する // cmpf によって、直線の左端のx座標の昇順で探索する f = new TreeSet<>((x, y) -> { if (cmpf) return aa[x] == aa[y] ? Long.compare(bb[x], bb[y]) : Long.compare(aa[y], aa[x]); else return left[x] == left[y] ? Integer.compare(x, y) : Long.compare(left[x], left[y]); }); } // ax+b を追加。 private void add(long a, long b) { aa[cnt] = a; bb[cnt] = b; int curr = cnt++; if (f.contains(curr)) { return; } Integer prev = f.lower(curr); Integer next = f.higher(curr); if (!check(prev, curr, next)) { return; } while (prev != null) { Integer pprev = f.lower(prev); if (check(pprev, prev, curr)) { break; } f.remove(prev); prev = pprev; } while (next != null) { Integer nnext = f.higher(next); if (check(curr, next, nnext)) { break; } f.remove(next); next = nnext; } if (prev == null) { left[curr] = Long.MIN_VALUE; f.add(curr); } else { long bbb = bb[curr] - bb[prev]; long aaa = aa[prev] - aa[curr]; left[curr] = bbb >= 0 ? (bbb + aaa - 1) / aaa : bbb / aaa; f.add(curr); } if (next != null) { long bbb = bb[next] - bb[curr]; long aaa = aa[curr] - aa[next]; left[next] = bbb >= 0 ? (bbb + aaa - 1) / aaa : bbb / aaa; } } // f(x)の最小値。 private long query(long x) { left[cnt] = x; cmpf = false; Integer mini = f.lower(cnt); cmpf = true; // if (mini == null) { // pr.printf("%d %f\n", x, dd[cnt]); // pr.flush(); // } return fx(mini, x); } // i 番目の直線を使った時の f(x) の値 private long fx(int i, long x) { return aa[i] * x + bb[i]; } // curr の直線が必要な場合 true private boolean check(Integer prev, Integer curr, Integer next) { // Comparator で aは降順、bは昇順なので if (prev == null) { return true; } else { if (aa[prev] == aa[curr]) { return false; } } if (next == null) { return true; } double b32 = bb[next] - bb[curr]; double a21 = aa[curr] - aa[prev]; double b21 = bb[curr] - bb[prev]; double a32 = aa[next] - aa[curr]; // if (Math.abs(b32 * a21) > (double)Long.MAX_VALUE || Math.abs(b21 * a32) > (double)Long.MAX_VALUE) { // throw new RuntimeException(); // } return b32 * a21 < b21 * a32; // long でいける場合 // return (bb[next] - bb[curr]) * (aa[curr] - aa[prev]) < (bb[curr] - bb[prev]) * (aa[next] - aa[curr]); /* BigInteger a1 = BigInteger.valueOf(aa[prev]); BigInteger a2 = BigInteger.valueOf(aa[curr]); BigInteger a3 = BigInteger.valueOf(aa[next]); BigInteger b1 = BigInteger.valueOf(bb[prev]); BigInteger b2 = BigInteger.valueOf(bb[curr]); BigInteger b3 = BigInteger.valueOf(bb[next]); // BigInteger LMAX = BigInteger.valueOf(Long.MAX_VALUE); // if (b3.multiply(a1).abs().compareTo(LMAX) > 0) { // pr.printf("Overflow : %s %s\n", b3, a1); // } // if (b1.multiply(a3).abs().compareTo(LMAX) > 0) { // pr.printf("Overflow : %s %s\n", b1, a3); // } // if (a2.multiply(b3).abs().compareTo(LMAX) > 0) { // pr.printf("Overflow : %s %s\n", a2, b3); // } // if (a2.multiply(b1).abs().compareTo(LMAX) > 0) { // pr.printf("Overflow : %s %s\n", a2, b1); // } // if (b2.multiply(a1).abs().compareTo(LMAX) > 0) { // pr.printf("Overflow : %s %s\n", b2, a1); // } // if (b2.multiply(a3).abs().compareTo(LMAX) > 0) { // pr.printf("Overflow : %s %s\n", b2, a3); // } return b3.multiply(a1).subtract(b1.multiply(a3)).compareTo(a2.multiply(b3).subtract(a2.multiply(b1)).add(b2.multiply(a1)).subtract(b2.multiply(a3))) > 0; // */ } } // --------------------------------------------------- public static void main(String[] args) { sc = new Scanner(INPUT == null ? System.in : new ByteArrayInputStream(INPUT.getBytes())); pr = new Printer(System.out); solve(); // pr.close(); pr.flush(); // sc.close(); } static String INPUT = null; @SuppressWarnings("unused") private static class Scanner { BufferedReader br; Scanner (InputStream in) { br = new BufferedReader(new InputStreamReader(in)); } private boolean isPrintable(int ch) { return ch >= '!' && ch <= '~'; } private boolean isCRLF(int ch) { return ch == '\n' || ch == '\r' || ch == -1; } private int nextPrintable() { try { int ch; while (!isPrintable(ch = br.read())) { if (ch == -1) { throw new NoSuchElementException(); } } return ch; } catch (IOException e) { throw new NoSuchElementException(); } } String next() { try { int ch = nextPrintable(); StringBuilder sb = new StringBuilder(); do { sb.appendCodePoint(ch); } while (isPrintable(ch = br.read())); return sb.toString(); } catch (IOException e) { throw new NoSuchElementException(); } } int nextInt() { try { // parseInt from Integer.parseInt() boolean negative = false; int res = 0; int limit = -Integer.MAX_VALUE; int radix = 10; int fc = nextPrintable(); if (fc < '0') { if (fc == '-') { negative = true; limit = Integer.MIN_VALUE; } else if (fc != '+') { throw new NumberFormatException(); } fc = br.read(); } int multmin = limit / radix; int ch = fc; do { int digit = ch - '0'; if (digit < 0 || digit >= radix) { throw new NumberFormatException(); } if (res < multmin) { throw new NumberFormatException(); } res *= radix; if (res < limit + digit) { throw new NumberFormatException(); } res -= digit; } while (isPrintable(ch = br.read())); return negative ? res : -res; } catch (IOException e) { throw new NoSuchElementException(); } } long nextLong() { try { // parseLong from Long.parseLong() boolean negative = false; long res = 0; long limit = -Long.MAX_VALUE; int radix = 10; int fc = nextPrintable(); if (fc < '0') { if (fc == '-') { negative = true; limit = Long.MIN_VALUE; } else if (fc != '+') { throw new NumberFormatException(); } fc = br.read(); } long multmin = limit / radix; int ch = fc; do { int digit = ch - '0'; if (digit < 0 || digit >= radix) { throw new NumberFormatException(); } if (res < multmin) { throw new NumberFormatException(); } res *= radix; if (res < limit + digit) { throw new NumberFormatException(); } res -= digit; } while (isPrintable(ch = br.read())); return negative ? res : -res; } catch (IOException e) { throw new NoSuchElementException(); } } float nextFloat() { return Float.parseFloat(next()); } double nextDouble() { return Double.parseDouble(next()); } String nextLine() { try { int ch; while (isCRLF(ch = br.read())) { if (ch == -1) { throw new NoSuchElementException(); } } StringBuilder sb = new StringBuilder(); do { sb.appendCodePoint(ch); } while (!isCRLF(ch = br.read())); return sb.toString(); } catch (IOException e) { throw new NoSuchElementException(); } } void close() { try { br.close(); } catch (IOException e) { // throw new NoSuchElementException(); } } } private static class Printer extends PrintWriter { Printer(OutputStream out) { super(out); } } }