#618831 (Go) No.702 中央値を求めよ LIMITED

• 問題: No.702 中央値を求めよ LIMITED
• ユーザー: c-yan
• 提出日時: 2021-02-17 00:24:13
• 言語: Go (1.22.1)
• 結果: AC
• 実行時間: 888 ms / 5,000 ms
• コード長: 1,333 bytes
• コンパイル時間: 13,668 ms
• コンパイル使用メモリ: 224,228 KB
• 実行使用メモリ: 9,600 KB
• 最終ジャッジ日時: 2024-11-22 23:00:58
• 合計ジャッジ時間: 39,750 ms
• ジャッジサーバーID （参考情報）: judge4 / judge3

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	874 ms; 9,600 KB
testcase_01	AC	877 ms; 9,600 KB
testcase_02	AC	873 ms; 9,600 KB
testcase_03	AC	874 ms; 9,600 KB
testcase_04	AC	872 ms; 9,600 KB
testcase_05	AC	875 ms; 9,600 KB
testcase_06	AC	877 ms; 9,600 KB
testcase_07	AC	874 ms; 9,600 KB
testcase_08	AC	876 ms; 9,600 KB
testcase_09	AC	875 ms; 9,600 KB
testcase_10	AC	875 ms; 9,600 KB
testcase_11	AC	875 ms; 9,600 KB
testcase_12	AC	875 ms; 9,600 KB
testcase_13	AC	876 ms; 9,600 KB
testcase_14	AC	874 ms; 9,600 KB
testcase_15	AC	876 ms; 9,600 KB
testcase_16	AC	888 ms; 9,600 KB
testcase_17	AC	874 ms; 9,600 KB
testcase_18	AC	876 ms; 9,600 KB
testcase_19	AC	875 ms; 9,600 KB
testcase_20	AC	873 ms; 9,600 KB
testcase_21	AC	876 ms; 9,600 KB
testcase_22	AC	873 ms; 9,600 KB
testcase_23	AC	872 ms; 9,600 KB
testcase_24	AC	874 ms; 9,600 KB
testcase_25	AC	872 ms; 9,600 KB
testcase_26	AC	874 ms; 9,600 KB

ソースコード

package main

import (
	"bufio"
	"fmt"
	"os"
	"sort"
	"strconv"
)

var (
	x uint32 = 0
	y uint32 = 1
	z uint32 = 2
	w uint32 = 3
)

func xorshift() uint32 {
	var t uint32 = x ^ (x << 11)
	x = y
	y = z
	z = w
	w = (w ^ (w >> 19)) ^ (t ^ (t >> 8))
	return w
}

const (
	totalSize = 10000001
	buffSize  = 10000
)

func main() {
	defer flush()

	x = uint32(readInt())

	t := make([]int, 0, totalSize/10+1)
	buff := make([]int, buffSize)
	for i := 0; i < totalSize/buffSize; i++ {
		for j := 0; j < buffSize; j++ {
			buff[j] = int(xorshift())
		}
		sort.Ints(buff)
		a := (buffSize - (buffSize / 10)) / 2
		t = append(t, buff[a:a+buffSize/10]...)
	}
	t = append(t, int(xorshift()))
	sort.Ints(t)
	println(t[len(t)/2])
}

const (
	ioBufferSize = 1 * 1024 * 1024 // 1 MB
)

var stdinScanner = func() *bufio.Scanner {
	result := bufio.NewScanner(os.Stdin)
	result.Buffer(make([]byte, ioBufferSize), ioBufferSize)
	result.Split(bufio.ScanWords)
	return result
}()

func readString() string {
	stdinScanner.Scan()
	return stdinScanner.Text()
}

func readInt() int {
	result, err := strconv.Atoi(readString())
	if err != nil {
		panic(err)
	}
	return result
}

var stdoutWriter = bufio.NewWriter(os.Stdout)

func flush() {
	stdoutWriter.Flush()
}

func println(args ...interface{}) (int, error) {
	return fmt.Fprintln(stdoutWriter, args...)
}