結果
問題 | No.2199 lower_bound and upper_bound |
ユーザー | 箱星 |
提出日時 | 2022-05-04 06:39:57 |
言語 | Kotlin (1.9.23) |
結果 |
AC
|
実行時間 | 426 ms / 2,000 ms |
コード長 | 2,508 bytes |
コンパイル時間 | 11,988 ms |
コンパイル使用メモリ | 458,380 KB |
実行使用メモリ | 137,840 KB |
最終ジャッジ日時 | 2024-10-05 15:45:14 |
合計ジャッジ時間 | 23,367 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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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 | 397 ms
137,712 KB |
testcase_01 | AC | 393 ms
137,836 KB |
testcase_02 | AC | 405 ms
137,644 KB |
testcase_03 | AC | 396 ms
137,684 KB |
testcase_04 | AC | 394 ms
137,572 KB |
testcase_05 | AC | 394 ms
137,644 KB |
testcase_06 | AC | 392 ms
137,648 KB |
testcase_07 | AC | 409 ms
137,692 KB |
testcase_08 | AC | 398 ms
137,652 KB |
testcase_09 | AC | 388 ms
137,684 KB |
testcase_10 | AC | 423 ms
137,824 KB |
testcase_11 | AC | 396 ms
137,668 KB |
testcase_12 | AC | 389 ms
137,608 KB |
testcase_13 | AC | 410 ms
137,624 KB |
testcase_14 | AC | 396 ms
137,708 KB |
testcase_15 | AC | 399 ms
137,840 KB |
testcase_16 | AC | 392 ms
137,668 KB |
testcase_17 | AC | 399 ms
137,596 KB |
testcase_18 | AC | 395 ms
137,576 KB |
testcase_19 | AC | 425 ms
137,708 KB |
testcase_20 | AC | 419 ms
137,716 KB |
testcase_21 | AC | 426 ms
137,628 KB |
testcase_22 | AC | 407 ms
137,652 KB |
testcase_23 | AC | 404 ms
137,840 KB |
testcase_24 | AC | 408 ms
137,712 KB |
ソースコード
fun main() { val (n, l, u) = readLongs() val cc = CombinationCalculator() var ans = ModInt(0) for (m in l..u) { ans += cc.binom(2 * n + m - 1, n - 1) - cc.binom(2 * n + m - 1, n + u + 1) } println(ans) } // region ModInt class ModInt(x: Long) { companion object { const val MOD = 998244353L //const val MOD = 1000000007L } 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" } } // endregion class CombinationCalculator { companion object { private const val fac_size = 600000 } private val arrFac = Array(fac_size) { ModInt(1) } private val arrInvfac = Array(fac_size) { ModInt(1) } init { for (i in 1 until fac_size) { arrFac[i] = arrFac[i - 1] * ModInt(i) } arrInvfac[fac_size - 1] = arrFac[fac_size - 1].inv() for (i in fac_size - 2 downTo 1) { arrInvfac[i] = arrInvfac[i + 1] * ModInt(i + 1) } } fun fac(n: Int): ModInt { return arrFac[n] } fun fac(n: Long): ModInt { return fac(n.toInt()) } fun invfac(n: Int): ModInt { return arrInvfac[n] } fun invfac(n: Long): ModInt { return invfac(n.toInt()) } fun binom(n: Long, k: Long): ModInt { return if (k in 0..n) { arrFac[n.toInt()] * arrInvfac[k.toInt()] * arrInvfac[(n - k).toInt()] } else { ModInt(0) } } } fun readLongs() = readln().split(" ").map { it.toLong() }