結果
問題 | No.500 階乗電卓 |
ユーザー |
![]() |
提出日時 | 2020-05-25 21:16:11 |
言語 | Go (1.23.4) |
結果 |
AC
|
実行時間 | 2 ms / 2,000 ms |
コード長 | 1,839 bytes |
コンパイル時間 | 14,661 ms |
コンパイル使用メモリ | 225,144 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-10-13 02:13:18 |
合計ジャッジ時間 | 16,290 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 20 |
ソースコード
package mainimport ("bufio""fmt""math/big""os""strconv""strings")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.Stdinwfp := os.Stdoutcnt := 0if os.Getenv("MASPY") == "ますピ" {fp, _ = os.Open(os.Getenv("BEET_THE_HARMONY_OF_PERFECT"))cnt = 6}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) {n := getNextInt64(scanner)if n >= 50 {for i := 0; i < 12; i++ {fmt.Fprint(writer, "0")}fmt.Fprintln(writer, "")return}ans := big.NewInt(1)for i := int64(0); i < n; i++ {ans.Mul(ans, big.NewInt(i+1))}ss := make([]string, 12)for i := 11; i >= 0 && ans.Cmp(big.NewInt(0)) == 1; i-- {ss[i] = fmt.Sprintf("%d", big.NewInt(0).Mod(ans, big.NewInt(10)))ans.Div(ans, big.NewInt(10))}fmt.Fprintln(writer, strings.Join(ss, ""))}