結果
| 問題 | No.694 square1001 and Permutation 3 |
| ユーザー |
 Grenache
|
| 提出日時 | 2018-06-09 00:17:45 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 2,099 ms / 3,000 ms |
| コード長 | 5,312 bytes |
| コンパイル時間 | 3,931 ms |
| コンパイル使用メモリ | 80,684 KB |
| 実行使用メモリ | 114,760 KB |
| 最終ジャッジ日時 | 2024-06-30 11:42:16 |
| 合計ジャッジ時間 | 15,942 ms |
|
ジャッジサーバーID （参考情報） |
judge3 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 13 |
ソースコード
import java.io.*;import java.util.*;public class Main_yukicoder694 {private static Scanner sc;private static Printer pr;private static void solve() {int n = sc.nextInt();int[] a = new int[n];Set<Integer> hs = new HashSet<>(n);for (int i = 0; i < n; i++) {a[i] = sc.nextInt();hs.add(a[i]);}List<Integer> list = new ArrayList<>(hs);Collections.sort(list);int[] aa = new int[n];for (int i = 0; i < n; i++) {aa[i] = Collections.binarySearch(list, a[i]);}RSQ rsq = new RSQ(n);int[] inv = new int[n];long ans = 0;for (int i = 0; i < n; i++) {inv[i] = rsq.query(aa[i] + 1, n);ans += inv[i];rsq.add(aa[i], 1);}for (int i = 0; i < n; i++) {pr.println(ans);ans = ans - rsq.query(0, aa[i]) + rsq.query(aa[i] + 1, n);}}// Range Sum Query by Segment Treeprivate static class RSQ {int[] st;int n;RSQ(int n) {this.n = 1;while (this.n < n) {this.n *= 2;}st = new int[2 * this.n - 1];}// i:0-indexedvoid add(int i, int x) {i = n - 1 + i;st[i] += x;while (i > 0) {i = (i - 1) / 2;st[i] += x;}}// a, b:0-indexed// [a, b)int query(int a, int b) {return query(a, b, 0, 0, n);}private int query(int a, int b, int i, int l, int r) {if (a >= r || b <= l) {return 0;}if (a <= l && b >= r) {return st[i];}return query(a, b, i * 2 + 1, l, (l + r) / 2) + query(a, b, i * 2 + 2, (l + r) / 2, r);}}// ---------------------------------------------------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);}}}