結果

問題 No.875 Range Mindex Query
ユーザー GrenacheGrenache
提出日時 2019-09-06 21:36:05
言語 Java21
(openjdk 21)
結果
AC  
実行時間 418 ms / 2,000 ms
コード長 6,410 bytes
コンパイル時間 3,740 ms
コンパイル使用メモリ 76,480 KB
実行使用メモリ 59,844 KB
最終ジャッジ日時 2023-09-06 22:55:01
合計ジャッジ時間 8,704 ms
ジャッジサーバーID
（参考情報） 		judge15 / judge11
このコードへのチャレンジ（β）

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 40 ms
50,124 KB
testcase_01 AC 56 ms
51,620 KB
testcase_02 AC 67 ms
51,788 KB
testcase_03 AC 52 ms
49,496 KB
testcase_04 AC 54 ms
49,556 KB
testcase_05 AC 53 ms
49,768 KB
testcase_06 AC 59 ms
51,684 KB
testcase_07 AC 62 ms
51,716 KB
testcase_08 AC 54 ms
49,772 KB
testcase_09 AC 53 ms
49,536 KB
testcase_10 AC 77 ms
52,080 KB
testcase_11 AC 370 ms
59,844 KB
testcase_12 AC 307 ms
55,808 KB
testcase_13 AC 302 ms
58,048 KB
testcase_14 AC 299 ms
58,236 KB
testcase_15 AC 347 ms
59,804 KB
testcase_16 AC 385 ms
59,524 KB
testcase_17 AC 418 ms
59,332 KB
testcase_18 AC 405 ms
59,260 KB
権限があれば一括ダウンロードができます

ソースコード

diff # 

import java.io.*;
import java.util.*;


public class Main_yukicoder875 {

	private static Scanner sc;
	private static Printer pr;

	private static void solve() {
		int n = sc.nextInt();
		int q = sc.nextInt();

		int[] a = sc.nextIntArray(n);
		int[] conv = new int[n + 1];
		RMQ rmq = new RMQ(n);
		for (int i = 0; i < n; i++) {
			int e = a[i];

			conv[e] = i;
			rmq.update(i, a[i]);
		}
		
		for (int i = 0; i < q; i++) {
			int query = sc.nextInt();
			int l = sc.nextInt() - 1;
			int r = sc.nextInt() - 1;
			
			if (query == 1) {
				{ int tmp = a[l]; a[l] = a[r]; a[r] = tmp; }
				{ int tmp = conv[a[l]]; conv[a[l]] = conv[a[r]]; conv[a[r]] = tmp; }

				rmq.update(l, a[l]);
				rmq.update(r, a[r]);
			} else {
				pr.println(conv[rmq.query(l, r + 1)] + 1);
			}
		}
	}

	// Range Minimum Query by Segment Tree
	static class RMQ {
		int[] st;
		int n;
		final int INF = Integer.MAX_VALUE;

		RMQ(int n) {
			this.n = 1;
			while (this.n < n) {
				this.n *= 2;
			}
			st = new int[2 * this.n - 1];
			Arrays.fill(st, INF);
		}

		// i:0-indexed
		void update(int i, int x) {
			i = n - 1 + i;
			st[i] = x;
			while (i > 0) {
				i = (i - 1) / 2;
				st[i] = Math.min(st[2 * i + 1], st[2 * i + 2]);
			}
		}

		// 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 INF;
			}
			if (a <= l && b >= r) {
				return st[i];
			}

			return Math.min(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(System.in);
		pr = new Printer(System.out);
			
		solve();
			
		pr.close();
		sc.close();
	}

	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();
			}
		}

		int[] nextIntArray(int n) {
			int[] ret = new int[n];
			for (int i = 0; i < n; i++) {
				ret[i] = sc.nextInt();
			}

			return ret;
		}

		long[] nextLongArray(int n) {
			long[] ret = new long[n];
			for (int i = 0; i < n; i++) {
				ret[i] = sc.nextLong();
			}

			return ret;
		}

		int[][] nextIntArrays(int m, int n) {
			int[][] ret = new int[m][n];
			for (int i = 0; i < n; i++) {
				for (int j = 0; j < m; j++) {
					ret[j][i] = sc.nextInt();
				}
			}

			return ret;
		}

		void close() {
			try {
				br.close();
			} catch (IOException e) {
				//				throw new NoSuchElementException();
			}
		}
	}

	static class Printer extends PrintWriter {
		Printer(OutputStream out) {
			super(out);
		}

		void printInts(int... a) {
			StringBuilder sb = new StringBuilder(32);
			for (int i = 0, size = a.length; i < size; i++) {
				if (i > 0) {
					sb.append(' ');
				}
				sb.append(a[i]);
			}

			println(sb);
		}

		void printLongs(long... a) {
			StringBuilder sb = new StringBuilder(64);
			for (int i = 0, size = a.length; i < size; i++) {
				if (i > 0) {
					sb.append(' ');
				}
				sb.append(a[i]);
			}

			println(sb);
		}

		void printStrings(String... a) {
			StringBuilder sb = new StringBuilder(32);
			for (int i = 0, size = a.length; i < size; i++) {
				if (i > 0) {
					sb.append(' ');
				}
				sb.append(a[i]);
			}

			println(sb);
		}
	}
}
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