結果
問題 | No.1701 half price |
ユーザー |
![]() |
提出日時 | 2021-10-08 22:25:10 |
言語 | Kotlin (2.1.0) |
結果 |
AC
|
実行時間 | 447 ms / 3,000 ms |
コード長 | 3,907 bytes |
コンパイル時間 | 17,237 ms |
コンパイル使用メモリ | 467,320 KB |
実行使用メモリ | 54,876 KB |
最終ジャッジ日時 | 2024-07-23 04:58:58 |
合計ジャッジ時間 | 24,910 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 20 |
コンパイルメッセージ
Main.kt:151:11: 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:155:11: 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:159:11: 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:163:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types private inline fun toString(a: BooleanArray) = run{a.map { if (it) 1 else 0 }.joinToString("")} ^ Main.kt:165:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types private inline fun debugDim(A: Array<LongArray>) { ^ Main.kt:172:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types private inline fun debugDim(A: Array<IntArray>) { ^ Main.kt:179:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types private inline fun debugDim(A: Array<BooleanArray>) { ^ Main.kt:196:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types private inline fun assert(b: Boolean) = run{if (!b) throw AssertionError()} ^
ソースコード
import java.io.BufferedReaderimport java.io.InputStreamimport java.io.InputStreamReaderimport java.lang.AssertionErrorimport java.util.*import kotlin.math.absimport kotlin.math.maximport kotlin.math.minval MOD = 1_000_000_007/*** 桁が大きすぎるとBigIntegerで間に合わなくなる* 99 -> 100 のようなケースに対応するため、digitsは一桁多めに用意すること*/fun incr(digits: IntArray) {var i = 0digits[i]++while (digits[i] == 3) {digits[i] = 0digits[i + 1]++i++}}class Solver(stream: InputStream, private val out: java.io.PrintWriter) {private val reader = BufferedReader(InputStreamReader(stream), 32768)fun solve() {val (N, W) = na(2)val A = na(N)val ans = BooleanArray(1 shl N)var n = 1for (i in 0 until N) {n *= 3}val flg = IntArray(N + 1)for (bit in 0 until n - 1) {incr(flg)var sum = 0Lfor (i in 0 until N) {sum += when(flg[i]) {1 -> A[i]2 -> A[i]/2else -> 0}}if (sum == W.toLong()) {// debug(flg)var f = 0for (i in 0 until N) {if (flg[i] > 0) {f += 1 shl i}}ans[f] = true}}out.println(ans.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? = nullprivate 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()