#241889 (Java21) No.275 中央値を求めよ

• 問題: No.275 中央値を求めよ
• ユーザー: Tsukasa_Type
• 提出日時: 2018-03-06 21:26:20
• 言語: Java21 (openjdk 21)
• 結果: RE
• 実行時間: -
• コード長: 2,233 bytes
• コンパイル時間: 2,341 ms
• コンパイル使用メモリ: 78,124 KB
• 実行使用メモリ: 53,568 KB
• 最終ジャッジ日時: 2023-10-21 18:48:45
• 合計ジャッジ時間: 5,497 ms
• ジャッジサーバーID （参考情報）: judge13 / judge11

入力	結果	実行時間; 実行使用メモリ
testcase_00	RE	-
testcase_01	RE	-
testcase_02	RE	-
testcase_03	AC	53 ms; 53,488 KB
testcase_04	RE	-
testcase_05	RE	-
testcase_06	RE	-
testcase_07	RE	-
testcase_08	AC	54 ms; 53,480 KB
testcase_09	AC	53 ms; 53,480 KB
testcase_10	RE	-
testcase_11	AC	54 ms; 53,476 KB
testcase_12	RE	-
testcase_13	AC	53 ms; 53,484 KB
testcase_14	RE	-
testcase_15	RE	-
testcase_16	RE	-
testcase_17	RE	-
testcase_18	RE	-
testcase_19	AC	55 ms; 53,492 KB
testcase_20	RE	-
testcase_21	RE	-
testcase_22	RE	-
testcase_23	AC	54 ms; 53,480 KB
testcase_24	RE	-
testcase_25	RE	-
testcase_26	AC	54 ms; 52,384 KB
testcase_27	AC	55 ms; 53,488 KB
testcase_28	AC	54 ms; 53,488 KB
testcase_29	AC	54 ms; 53,480 KB
testcase_30	AC	54 ms; 53,480 KB
testcase_31	RE	-
testcase_32	AC	54 ms; 53,488 KB
testcase_33	AC	54 ms; 53,488 KB
testcase_34	AC	54 ms; 52,368 KB
testcase_35	AC	55 ms; 53,488 KB
testcase_36	AC	54 ms; 53,492 KB
testcase_37	RE	-
testcase_38	RE	-
testcase_39	AC	55 ms; 53,480 KB
testcase_40	AC	55 ms; 53,496 KB

ソースコード

import java.util.*;
import static java.lang.System.*;
import java.io.*;

public class Main {
	static FastScanner sc = new FastScanner(System.in);
	public static void main(String[] args) {
		int n = sc.nextInt();
		int[] ar = new int[n];
		for (int i=0; i<n; i++) {
			ar[i] = sc.nextInt();
		}
		Arrays.sort(ar);
		if (ar.length%2==0) {
			out.println((ar[n/2]+ar[n+1/2])/2);
		}
		else {
			out.println(ar[n/2]);
		}
	}
}

class FastScanner implements Closeable {
	private final InputStream in;
	private final byte[] buffer = new byte[1024];
	private int ptr = 0;
	private int buflen = 0;
	public FastScanner(InputStream in) {
		this.in = in;
	}
	private boolean hasNextByte() {
		if (ptr < buflen) {
			return true;
		}else{
			ptr = 0;
			try {
				buflen = in.read(buffer);
			} catch (IOException e) {
				e.printStackTrace();
			}
			if (buflen <= 0) {
				return false;
			}
		}
		return true;
	}
	private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
	private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
	public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();}
	public String next() {
		if (!hasNext()) throw new NoSuchElementException();
		StringBuilder sb = new StringBuilder();
		int b = readByte();
		while(isPrintableChar(b)) {
			sb.appendCodePoint(b);
			b = readByte();
		}
		return sb.toString();
	}
	public long nextLong() {
		if (!hasNext()) throw new NoSuchElementException();
		long n = 0;
		boolean minus = false;
		int b = readByte();
		if (b == '-') {
			minus = true;
			b = readByte();
		}
		if (b < '0' || '9' < b) {
			throw new NumberFormatException();
		}
		while(true){
			if ('0' <= b && b <= '9') {
				n *= 10;
				n += b - '0';
			}else if(b == -1 || !isPrintableChar(b)){
				return minus ? -n : n;
			}else{
				throw new NumberFormatException();
			}
			b = readByte();
		}
	}
	public int nextInt() {
		long nl = nextLong();
		if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
		return (int) nl;
	}
	public double nextDouble() { return Double.parseDouble(next());}
	public void close() {
		try {
			in.close();
		} catch (IOException e) {
		}
	}
}