#487134 (Go) No.420 mod2漸化式

• 問題: No.420 mod2漸化式
• ユーザー: ccppjsrb
• 提出日時: 2020-05-26 14:59:41
• 言語: Go (1.22.1)
• 結果: WA
• 実行時間: -
• コード長: 1,880 bytes
• コンパイル時間: 13,529 ms
• コンパイル使用メモリ: 234,340 KB
• 実行使用メモリ: 6,948 KB
• 最終ジャッジ日時: 2024-04-21 04:19:13
• 合計ジャッジ時間: 14,769 ms
• ジャッジサーバーID （参考情報）: judge5 / judge2

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	2 ms; 6,816 KB
testcase_01	AC	2 ms; 6,816 KB
testcase_02	AC	2 ms; 6,816 KB
testcase_03	AC	1 ms; 6,940 KB
testcase_04	AC	2 ms; 6,944 KB
testcase_05	AC	1 ms; 6,944 KB
testcase_06	WA	-
testcase_07	AC	2 ms; 6,940 KB
testcase_08	AC	1 ms; 6,944 KB
testcase_09	AC	2 ms; 6,940 KB
testcase_10	AC	1 ms; 6,940 KB
testcase_11	AC	1 ms; 6,940 KB
testcase_12	AC	1 ms; 6,940 KB
testcase_13	AC	1 ms; 6,940 KB
testcase_14	AC	1 ms; 6,940 KB
testcase_15	AC	2 ms; 6,940 KB
testcase_16	AC	1 ms; 6,940 KB
testcase_17	AC	1 ms; 6,940 KB
testcase_18	WA	-
testcase_19	WA	-
testcase_20	WA	-
testcase_21	WA	-
testcase_22	WA	-
testcase_23	WA	-
testcase_24	WA	-
testcase_25	WA	-
testcase_26	WA	-
testcase_27	WA	-
testcase_28	WA	-
testcase_29	WA	-
testcase_30	WA	-
testcase_31	WA	-
testcase_32	AC	1 ms; 6,944 KB
testcase_33	AC	1 ms; 6,940 KB
testcase_34	AC	1 ms; 6,944 KB
testcase_35	AC	1 ms; 6,944 KB

ソースコード

package main

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

func getScanner(fp *os.File) *bufio.Scanner {
	scanner := bufio.NewScanner(fp)
	scanner.Split(bufio.ScanWords)
	scanner.Buffer(make([]byte, 1000005), 1000005)
	return scanner
}
func getNextString(scanner *bufio.Scanner) string {
	scanner.Scan()
	return scanner.Text()
}
func getNextInt(scanner *bufio.Scanner) int {
	i, _ := strconv.Atoi(getNextString(scanner))
	return i
}
func getNextInt64(scanner *bufio.Scanner) int64 {
	i, _ := strconv.ParseInt(getNextString(scanner), 10, 64)
	return i
}
func getNextUint64(scanner *bufio.Scanner) uint64 {
	i, _ := strconv.ParseUint(getNextString(scanner), 10, 64)
	return i
}
func getNextFloat64(scanner *bufio.Scanner) float64 {
	i, _ := strconv.ParseFloat(getNextString(scanner), 64)
	return i
}
func main() {
	fp := os.Stdin
	wfp := os.Stdout
	cnt := 0
	if os.Getenv("MASPY") == "ますピ" {
		fp, _ = os.Open(os.Getenv("BEET_THE_HARMONY_OF_PERFECT"))
		cnt = 5
	}
	if os.Getenv("MASPYPY") == "ますピッピ" {
		wfp, _ = os.Create(os.Getenv("NGTKANA_IS_GENIUS10"))
	}
	scanner := getScanner(fp)
	writer := bufio.NewWriter(wfp)
	solve(scanner, writer)
	for i := 0; i < cnt; i++ {
		fmt.Fprintln(writer, "-----------------------------------")
		solve(scanner, writer)
	}
	writer.Flush()
}
func solve(scanner *bufio.Scanner, writer *bufio.Writer) {
	x := getNextInt(scanner)
	if x > 31 {
		fmt.Fprintf(writer, "%d %d\n", 0, 0)
		return
	}

	if x > 16 {
		x = 31 - x
	}
	var ans, c, cc int64
	c = 1
	cc = 1
	for i := 0; i < x; i++ {
		c *= int64(31 - i)
		c /= int64(i + 1)
		if i == 0 {
			continue
		}
		cc *= int64(31 - i)
		cc /= int64(i)
	}
	ans = (1<<uint(31) - 1) * cc
	fmt.Fprintf(writer, "%d %d\n", c, ans)
}

func nextCombination(bits int64) int64 {
	lowest1 := bits & -bits
	newbits := bits + lowest1
	newbits |= ((bits & ^newbits) / lowest1) >> 1
	return newbits
}