結果
問題 | No.557 点対称 |
ユーザー |
![]() |
提出日時 | 2020-09-05 21:17:56 |
言語 | Go (1.23.4) |
結果 |
AC
|
実行時間 | 2 ms / 2,000 ms |
コード長 | 2,322 bytes |
コンパイル時間 | 14,333 ms |
コンパイル使用メモリ | 235,516 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-11-29 06:09:10 |
合計ジャッジ時間 | 11,747 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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ファイルパターン | 結果 |
---|---|
other | AC * 30 |
ソースコード
package mainimport ("bufio""fmt""os""strconv")func configure(scanner *bufio.Scanner) {scanner.Split(bufio.ScanWords)scanner.Buffer(make([]byte, 1000005), 1000005)}func getNextString(scanner *bufio.Scanner) string {scanned := scanner.Scan()if !scanned {panic("scan failed")}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 getNextFloat64(scanner *bufio.Scanner) float64 {i, _ := strconv.ParseFloat(getNextString(scanner), 64)return i}func main() {fp := os.Stdinwfp := os.Stdoutextra := 0if os.Getenv("I") == "IronMan" {fp, _ = os.Open(os.Getenv("END_GAME"))extra = 100}scanner := bufio.NewScanner(fp)configure(scanner)writer := bufio.NewWriter(wfp)defer func() {r := recover()if r != nil {fmt.Fprintln(writer, r)}writer.Flush()}()solve(scanner, writer)for i := 0; i < extra; i++ {fmt.Fprintln(writer, "-----------------------------------")solve(scanner, writer)}}func solve(scanner *bufio.Scanner, writer *bufio.Writer) {n := getNextInt64(scanner)if n == 1 {fmt.Fprintln(writer, 2)return}var a, b, c minta = 4b = 5c = 1if n&1 == 1 {a.MulAs(3)n--}n -= 2n >>= 1for n > 0 {if n&1 == 1 {c.MulAs(b)}b.MulAs(b)n >>= 1}fmt.Fprintln(writer, a.Mul(c))}type mint int64func (mt mint) Mod() mint {m := mint(1e9 + 7)mt %= mif mt < 0 {return mt + m}return mt}func (mt mint) Inv() mint {return mt.Pow(mint(0).Sub(2))}func (mt mint) Pow(n mint) mint {p := mint(1)for n > 0 {if n&1 == 1 {p.MulAs(mt)}mt.MulAs(mt)n >>= 1}return p}func (mt mint) Add(x mint) mint {return (mt + x).Mod()}func (mt mint) Sub(x mint) mint {return (mt - x).Mod()}func (mt mint) Mul(x mint) mint {return (mt * x).Mod()}func (mt mint) Div(x mint) mint {return mt.Mul(x.Inv())}func (mt *mint) AddAs(x mint) *mint {*mt = mt.Add(x)return mt}func (mt *mint) SubAs(x mint) *mint {*mt = mt.Sub(x)return mt}func (mt *mint) MulAs(x mint) *mint {*mt = mt.Mul(x)return mt}func (mt *mint) DivAs(x mint) *mint {*mt = mt.Div(x)return mt}