#601990 (Go) No.1330 Multiply or Divide

• 問題: No.1330 Multiply or Divide
• ユーザー: aru aru
• 提出日時: 2021-01-09 19:20:25
• 言語: Go (1.23.4)
• 結果: AC
• 実行時間: 75 ms / 2,000 ms
• コード長: 2,143 bytes
• コンパイル時間: 15,756 ms
• コンパイル使用メモリ: 222,036 KB
• 実行使用メモリ: 6,820 KB
• 最終ジャッジ日時: 2024-11-18 09:44:26
• 合計ジャッジ時間: 16,226 ms
• ジャッジサーバーID （参考情報）: judge5 / judge2

ファイルパターン	結果
other	AC * 46

ソースコード

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package main
import (
    "bufio"
    "fmt"
    "math"
    "os"
    "sort"
    "strconv"
)
var sc = bufio.NewScanner(os.Stdin)
var wr = bufio.NewWriter(os.Stdout)
func out(x ...interface{}) {
    fmt.Fprintln(wr, x...)
}
func getI() int {
    sc.Scan()
    i, e := strconv.Atoi(sc.Text())
    if e != nil {
        panic(e)
    }
    return i
}
func getF() float64 {
    sc.Scan()
    i, e := strconv.ParseFloat(sc.Text(), 64)
    if e != nil {
        panic(e)
    }
    return i
}
func getInts(N int) []int {
    ret := make([]int, N)
    for i := 0; i < N; i++ {
        ret[i] = getI()
    }
    return ret
}
func getS() string {
    sc.Scan()
    return sc.Text()
}
// min, max, asub, absなど基本関数
func max(a, b int) int {
    if a > b {
        return a
    }
    return b
}
func min(a, b int) int {
    if a < b {
        return a
    }
    return b
}
// min for n entry
func nmin(a ...int) int {
    ret := a[0]
    for _, e := range a {
        ret = min(ret, e)
    }
    return ret
}
// max for n entry
func nmax(a ...int) int {
    ret := a[0]
    for _, e := range a {
        ret = max(ret, e)
    }
    return ret
}
func asub(a, b int) int {
    if a > b {
        return a - b
    }
    return b - a
}
func abs(a int) int {
    if a >= 0 {
        return a
    }
    return -a
}
func lowerBound(a []int, x int) int {
    idx := sort.Search(len(a), func(i int) bool {
        return a[i] >= x
    })
    return idx
}
func upperBound(a []int, x int) int {
    idx := sort.Search(len(a), func(i int) bool {
        return a[i] > x
    })
    return idx
}
const maxi = 40
const inf = math.MaxInt64 - 100
func main() {
    defer wr.Flush()
    sc.Split(bufio.ScanWords)
    sc.Buffer([]byte{}, 1000000)
    // this template is new version.
    // use getI(), getS(), getInts(), getF()
    N, M, P := getI(), getI(), getI()
    A := getInts(N)
    Max := make([]int, maxi)
    mem := 0
    for i := 0; i < N; i++ {
        cnt := 0
        mem = max(mem, A[i])
        for A[i]%P == 0 {
            A[i] /= P
            cnt += 1
        }
        Max[cnt] = max(Max[cnt], A[i])
    }
    dp := make([]int, maxi*maxi)
    for i := 0; i < maxi*maxi; i++ {
        dp[i] = -inf
    }
    dp[0] = 1
    for i := 0; i < maxi*maxi; i++ {
        if mem*dp[i] > M {
            out(i + 1)
            return
        }
        for j := 0; j < maxi; j++ {
            if j+1+i < maxi*maxi && dp[i+j+1] < dp[i]*Max[j] {
                dp[i+j+1] = dp[i] * Max[j]
            }
        }
    }
    out(-1)
}
 
 
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