結果

問題 No.2197 Same Dish
ユーザー 箱星箱星
提出日時 2022-09-19 18:20:29
言語 Kotlin
(1.9.23)
結果
AC  
実行時間 793 ms / 2,000 ms
コード長 2,612 bytes
コンパイル時間 13,843 ms
コンパイル使用メモリ 457,172 KB
実行使用メモリ 89,724 KB
最終ジャッジ日時 2024-06-23 08:45:54
合計ジャッジ時間 25,973 ms
ジャッジサーバーID
(参考情報)
judge2 / judge4
このコードへのチャレンジ
(要ログイン)

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 302 ms
53,836 KB
testcase_01 AC 290 ms
53,964 KB
testcase_02 AC 299 ms
53,784 KB
testcase_03 AC 292 ms
53,964 KB
testcase_04 AC 296 ms
53,828 KB
testcase_05 AC 283 ms
53,860 KB
testcase_06 AC 300 ms
53,932 KB
testcase_07 AC 285 ms
53,880 KB
testcase_08 AC 287 ms
54,032 KB
testcase_09 AC 276 ms
53,768 KB
testcase_10 AC 281 ms
54,092 KB
testcase_11 AC 291 ms
53,992 KB
testcase_12 AC 290 ms
54,060 KB
testcase_13 AC 503 ms
63,364 KB
testcase_14 AC 764 ms
88,164 KB
testcase_15 AC 793 ms
89,360 KB
testcase_16 AC 671 ms
89,324 KB
testcase_17 AC 671 ms
89,444 KB
testcase_18 AC 793 ms
89,440 KB
testcase_19 AC 772 ms
89,420 KB
testcase_20 AC 750 ms
89,668 KB
testcase_21 AC 786 ms
89,724 KB
testcase_22 AC 751 ms
89,596 KB
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ソースコード

diff #

fun main() {
    val (n, k) = nextInts()
    val customers = mutableListOf<Pair<Int, Int>>()
    for (i in 0 until n) {
        val (l, r) = nextInts()
        customers.add(l to r)
    }
    customers.sortBy { it.first }
    val bit = BIT(200005)
    var compl = ModInt(1)
    for ((l, r) in customers) {
        compl *= ModInt(k - bit.sum(l + 1 until 200005))
        bit.add(r, 1)
    }
    val ans = ModInt(k).pow(n.toLong()) - compl
    println(ans)
}

class BIT(private val n: Int) {
    private val data = LongArray(n) { 0 }

    fun add(i: Int, x: Long) {
        var p = i + 1
        while (p <= n) {
            data[p - 1] += x
            p += p and -p
        }
    }

    fun sum(range: IntRange): Long {
        val l = range.first
        val r = range.last + 1
        return sum(r) - sum(l)
    }

    private fun sum(i: Int): Long {
        var r = i
        var s = 0L
        while(r > 0) {
            s += data[r - 1]
            r -= r and -r
        }
        return s
    }
}

// region ModInt
class ModInt(x: Long) {
    companion object {
        //const val MOD = 1000000007L
        const val MOD = 998244353L
    }

    constructor(y: Int) : this(y.toLong())

    val x = (x % MOD + MOD) % MOD

    operator fun plus(other: ModInt): ModInt {
        return ModInt(x + other.x)
    }

    operator fun minus(other: ModInt): ModInt {
        return ModInt(x - other.x)
    }

    operator fun times(other: ModInt): ModInt {
        return ModInt(x * other.x)
    }

    operator fun div(other: ModInt): ModInt {
        return this * other.inv()
    }

    fun pow(exp: Long): ModInt {
        if (exp == 0L) return ModInt(1L)
        var a = pow(exp shr 1)
        a *= a
        if (exp and 1L == 0L) return a
        return this * a
    }

    fun inv(): ModInt {
        return this.pow(MOD - 2)
    }

    override fun equals(other: Any?): Boolean {
        if (this === other) return true
        if (javaClass != other?.javaClass) return false

        other as ModInt

        if (x != other.x) return false

        return true
    }

    override fun hashCode(): Int {
        return x.hashCode()
    }

    override fun toString(): String {
        return "$x"
    }
}

fun Long.toModInt(): ModInt {
    return ModInt(this)
}

fun Int.toModInt(): ModInt {
    return ModInt(this)
}

fun binomSimple(n: Long, k: Long): ModInt {
    var numer = ModInt(1)
    var denom = ModInt(1)
    for (i in 0 until k) {
        numer *= ModInt(n - i)
        denom *= ModInt(k - i)
    }
    return numer / denom
}
// endregion

fun nextInts() = readln().split(" ").map { it.toInt() }
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