結果
問題 | No.2199 lower_bound and upper_bound |
ユーザー | 箱星 |
提出日時 | 2022-05-05 04:12:56 |
言語 | Kotlin (1.9.23) |
結果 |
AC
|
実行時間 | 450 ms / 2,000 ms |
コード長 | 2,045 bytes |
コンパイル時間 | 14,058 ms |
コンパイル使用メモリ | 451,388 KB |
実行使用メモリ | 139,692 KB |
最終ジャッジ日時 | 2024-10-05 15:46:59 |
合計ジャッジ時間 | 24,898 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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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 | 416 ms
139,416 KB |
testcase_01 | AC | 413 ms
139,156 KB |
testcase_02 | AC | 431 ms
139,156 KB |
testcase_03 | AC | 425 ms
139,240 KB |
testcase_04 | AC | 426 ms
139,392 KB |
testcase_05 | AC | 420 ms
139,400 KB |
testcase_06 | AC | 421 ms
139,372 KB |
testcase_07 | AC | 433 ms
139,320 KB |
testcase_08 | AC | 426 ms
139,296 KB |
testcase_09 | AC | 417 ms
139,248 KB |
testcase_10 | AC | 450 ms
139,692 KB |
testcase_11 | AC | 422 ms
139,336 KB |
testcase_12 | AC | 425 ms
139,220 KB |
testcase_13 | AC | 439 ms
139,424 KB |
testcase_14 | AC | 409 ms
139,300 KB |
testcase_15 | AC | 417 ms
139,312 KB |
testcase_16 | AC | 435 ms
139,092 KB |
testcase_17 | AC | 438 ms
139,324 KB |
testcase_18 | AC | 433 ms
139,360 KB |
testcase_19 | AC | 439 ms
139,344 KB |
testcase_20 | AC | 443 ms
139,620 KB |
testcase_21 | AC | 439 ms
139,356 KB |
testcase_22 | AC | 441 ms
139,160 KB |
testcase_23 | AC | 436 ms
139,092 KB |
testcase_24 | AC | 444 ms
139,644 KB |
ソースコード
fun main() { val facSize = 600000 val arrFac = Array(facSize) { ModInt(1) } val arrInvfac = Array(facSize) { ModInt(1) } for (i in 1 until facSize) { arrFac[i] = arrFac[i - 1] * ModInt(i) } arrInvfac[facSize - 1] = arrFac[facSize - 1].inv() for (i in facSize - 2 downTo 1) { arrInvfac[i] = arrInvfac[i + 1] * ModInt(i + 1) } 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) } } val (n, l, u) = readLongs() var ans = ModInt(0) for (m in l..u) { ans += binom(2 * n + m - 1, n - 1) - 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 fun readLongs() = readln().split(" ").map { it.toLong() }