結果
問題 | No.1653 Squarefree |
ユーザー | yakamoto |
提出日時 | 2021-08-20 23:11:18 |
言語 | Kotlin (1.9.23) |
結果 |
AC
|
実行時間 | 405 ms / 2,000 ms |
コード長 | 4,955 bytes |
コンパイル時間 | 19,115 ms |
コンパイル使用メモリ | 438,124 KB |
実行使用メモリ | 52,916 KB |
最終ジャッジ日時 | 2023-08-04 11:45:35 |
合計ジャッジ時間 | 36,847 ms |
ジャッジサーバーID (参考情報) |
judge11 / judge15 |
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 | 391 ms
52,724 KB |
testcase_01 | AC | 287 ms
50,656 KB |
testcase_02 | AC | 292 ms
50,372 KB |
testcase_03 | AC | 289 ms
50,508 KB |
testcase_04 | AC | 287 ms
50,472 KB |
testcase_05 | AC | 287 ms
50,360 KB |
testcase_06 | AC | 290 ms
50,424 KB |
testcase_07 | AC | 293 ms
50,420 KB |
testcase_08 | AC | 293 ms
50,416 KB |
testcase_09 | AC | 287 ms
50,248 KB |
testcase_10 | AC | 287 ms
50,472 KB |
testcase_11 | AC | 303 ms
52,600 KB |
testcase_12 | AC | 299 ms
52,596 KB |
testcase_13 | AC | 403 ms
52,860 KB |
testcase_14 | AC | 399 ms
52,728 KB |
testcase_15 | AC | 400 ms
52,552 KB |
testcase_16 | AC | 404 ms
52,552 KB |
testcase_17 | AC | 399 ms
52,628 KB |
testcase_18 | AC | 399 ms
52,616 KB |
testcase_19 | AC | 392 ms
52,672 KB |
testcase_20 | AC | 395 ms
52,652 KB |
testcase_21 | AC | 391 ms
52,688 KB |
testcase_22 | AC | 405 ms
52,664 KB |
testcase_23 | AC | 396 ms
52,620 KB |
testcase_24 | AC | 389 ms
52,608 KB |
testcase_25 | AC | 400 ms
52,544 KB |
testcase_26 | AC | 402 ms
52,776 KB |
testcase_27 | AC | 396 ms
52,916 KB |
testcase_28 | AC | 385 ms
52,504 KB |
testcase_29 | AC | 396 ms
52,560 KB |
testcase_30 | AC | 401 ms
52,832 KB |
testcase_31 | AC | 396 ms
52,668 KB |
testcase_32 | AC | 394 ms
52,804 KB |
testcase_33 | AC | 392 ms
52,804 KB |
testcase_34 | AC | 395 ms
52,716 KB |
testcase_35 | AC | 400 ms
52,512 KB |
testcase_36 | AC | 375 ms
50,496 KB |
testcase_37 | AC | 380 ms
50,348 KB |
testcase_38 | AC | 378 ms
50,564 KB |
testcase_39 | AC | 380 ms
50,256 KB |
testcase_40 | AC | 381 ms
50,588 KB |
コンパイルメッセージ
Main.kt:17:9: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types private inline fun floor_div(a: Long, b: Long): Long { ^ Main.kt:24:9: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types private inline fun ceil_div(a: Long, b: Long): Long { ^ Main.kt:34:9: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types private inline fun div_lt(a: Long, b: Long) = ceil_div(a, b) - 1 ^ Main.kt:39:9: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types private inline fun div_le(a: Long, b: Long) = floor_div(a, b) ^ Main.kt:44:9: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types private inline fun div_gt(a: Long, b: Long) = floor_div(a, b) + 1 ^ Main.kt:49:9: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types private inline fun div_ge(a: Long, b: Long) = ceil_div(a, b) ^ Main.kt:195:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types private inline fun debug(a: LongArray) { ^ Main.kt:199:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types private inline fun debug(a: IntArray) { ^ Main.kt:203:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types private inline fun debug(a: BooleanArray) { ^ Main.kt:207:11: warning: ex
ソースコード
import java.io.BufferedReader import java.io.InputStream import java.io.InputStreamReader import java.lang.AssertionError import java.util.* import kotlin.math.abs import kotlin.math.max import kotlin.math.min import kotlin.math.sqrt val MOD = 1_000_000_007 /** * a, bがマイナスでもうまいこと動く */ private inline fun floor_div(a: Long, b: Long): Long { val sign = java.lang.Long.signum(b) val x = a*sign val y = b*sign return if (x > 0) x/y else -((-x+y-1)/y) } private inline fun ceil_div(a: Long, b: Long): Long { val sign = java.lang.Long.signum(b) val x = a*sign val y = b*sign return if (x > 0) (x+y-1)/y else x/y } /** * x < a/b を満たす整数xの最大 */ private inline fun div_lt(a: Long, b: Long) = ceil_div(a, b) - 1 /** * x <= a/b を満たす整数xの最大 */ private inline fun div_le(a: Long, b: Long) = floor_div(a, b) /** * x > a/b を満たす整数xの最小 */ private inline fun div_gt(a: Long, b: Long) = floor_div(a, b) + 1 /** * x >= a/b を満たす整数xの最小 */ private inline fun div_ge(a: Long, b: Long) = ceil_div(a, b) /** * 単調増加 * (l, h] 方式 * @return マッチするものがなかったらmx */ inline fun findMin(mn: Long, mx: Long, f: (Long) -> Boolean): Long { var low = mn - 1 var high = mx while(high - low > 1) { val m = (low + high) / 2 if (f(m)) high = m else low = m } return high } class Solver(stream: InputStream, private val out: java.io.PrintWriter) { private val reader = BufferedReader(InputStreamReader(stream), 32768) fun solve() { val (L, R) = nal(2) val N = (R - L + 1).toInt() val free = BooleanArray(N){true} // val MAX = if (isDebug) 10L else 1_000_000L val MAX = 1_000_000L for (x in 2L .. MAX) { val d = x*x val a = div_ge(L, d) var y = a*d // debug{"x:$x a:$a y:$y"} while(y <= R) { free[(y - L).toInt()] = false y += d } } // debug(free) val inf = 2e18.toLong() + 100 var x = MAX + 1 while(x*x <= R) { val a = div_ge(L, x*x) val y = a*x*x if (y <= R) free[(y - L).toInt()] = false val b = a - 1 // debug{"x:$x a:$a y:$y"} if (b == 0L) break x = findMin(x + 1, sqrt((inf/b).toDouble()).toLong()) { nx -> b*nx*nx >= L } } out.println(free.count { it }) } private val isDebug = try { // なんか本番でエラーでる System.getenv("MY_DEBUG") != null } catch (t: Throwable) { false } private var tokenizer: StringTokenizer? = null private fun next(): String { while (tokenizer == null || !tokenizer!!.hasMoreTokens()) { tokenizer = StringTokenizer(reader.readLine()) } return tokenizer!!.nextToken() } private fun ni() = next().toInt() private fun nl() = next().toLong() private fun ns() = next() private fun na(n: Int, offset: Int = 0): IntArray { return IntArray(n) { ni() + offset } } private fun nal(n: Int, offset: Int = 0): LongArray { val res = LongArray(n) for (i in 0 until n) { res[i] = nl() + offset } return res } private fun na2(n: Int, offset: Int = 0): Array<IntArray> { val a = Array(2){IntArray(n)} for (i in 0 until n) { for (e in a) { e[i] = ni() + offset } } return a } private inline fun debug(msg: () -> String) { if (isDebug) System.err.println(msg()) } /** * コーナーケースでエラー出たりするので、debug(dp[1])のように添え字付きの場合はdebug{}をつかうこと */ private inline fun debug(a: LongArray) { debug { a.joinToString(" ") } } private inline fun debug(a: IntArray) { debug { a.joinToString(" ") } } private inline fun debug(a: BooleanArray) { debug { toString(a) } } private inline fun toString(a: BooleanArray) = run{a.map { if (it) 1 else 0 }.joinToString("")} private inline fun debugDim(A: Array<LongArray>) { if (isDebug) { for (a in A) { debug(a) } } } private inline fun debugDim(A: Array<IntArray>) { if (isDebug) { for (a in A) { debug(a) } } } private inline fun debugDim(A: Array<BooleanArray>) { if (isDebug) { for (a in A) { debug(a) } } } /** * 勝手にimport消されるのを防ぎたい */ private fun hoge() { min(1, 2) max(1, 2) abs(-10) } private inline fun assert(b: Boolean) = run{if (!b) throw AssertionError()} private inline fun assert(b: Boolean, f: () -> String) = run{if (!b) throw AssertionError(f())} companion object { // TestRunnerから呼びたいので単純なmainじゃだめ fun main() { val out = java.io.PrintWriter(System.out) Solver(System.`in`, out).solve() out.flush() } } } /** * judgeから呼ばれる */ fun main() = Solver.main()