結果
問題 | No.1661 Sum is Prime (Hard Version) |
ユーザー | 箱星 |
提出日時 | 2021-08-27 04:39:20 |
言語 | Kotlin (2.1.0) |
結果 |
AC
|
実行時間 | 1,844 ms / 3,000 ms |
コード長 | 2,326 bytes |
コンパイル時間 | 19,122 ms |
コンパイル使用メモリ | 456,224 KB |
実行使用メモリ | 129,872 KB |
最終ジャッジ日時 | 2024-12-30 16:47:45 |
合計ジャッジ時間 | 45,543 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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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 | 387 ms
54,412 KB |
testcase_01 | AC | 398 ms
54,572 KB |
testcase_02 | AC | 1,517 ms
113,596 KB |
testcase_03 | AC | 339 ms
49,684 KB |
testcase_04 | AC | 388 ms
54,604 KB |
testcase_05 | AC | 397 ms
54,636 KB |
testcase_06 | AC | 396 ms
54,352 KB |
testcase_07 | AC | 384 ms
54,584 KB |
testcase_08 | AC | 390 ms
54,508 KB |
testcase_09 | AC | 388 ms
54,600 KB |
testcase_10 | AC | 388 ms
54,520 KB |
testcase_11 | AC | 381 ms
54,624 KB |
testcase_12 | AC | 1,416 ms
107,776 KB |
testcase_13 | AC | 1,388 ms
107,340 KB |
testcase_14 | AC | 1,508 ms
113,336 KB |
testcase_15 | AC | 1,647 ms
122,872 KB |
testcase_16 | AC | 1,503 ms
114,912 KB |
testcase_17 | AC | 1,498 ms
110,888 KB |
testcase_18 | AC | 870 ms
96,276 KB |
testcase_19 | AC | 1,316 ms
109,984 KB |
testcase_20 | AC | 918 ms
94,368 KB |
testcase_21 | AC | 1,267 ms
114,268 KB |
testcase_22 | AC | 1,844 ms
129,872 KB |
testcase_23 | AC | 1,790 ms
124,692 KB |
testcase_24 | AC | 1,644 ms
122,392 KB |
ソースコード
import java.io.PrintWriter import java.util.* import kotlin.math.* fun primePi(n: Long): Long { if (n <= 3) return maxOf(0, n - 1) val v = floor(sqrt(n.toDouble())).roundToInt() val smalls = (0..v).map { (it + 1) / 2 }.toTypedArray() var s = (v + 1) / 2 val roughs = (0 until s).map { 2 * it + 1 }.toTypedArray() val larges = (0 until s).map { (n / (2 * it + 1) + 1) / 2 }.toTypedArray() val skip = BooleanArray(v + 1) { false } var pc = 0 for (p in 3..v step 2) { if (skip[p]) continue val q = p * p.toLong() pc++ if (q * q > n) break skip[p] = true for (i in q..v step 2L * p) { skip[i.toInt()] = true } var ns = 0 for (k in 0 until s) { val i = roughs[k] if (skip[i]) continue val d = i * p.toLong() val x = if (d <= v) larges[smalls[d.toInt()] - pc] else smalls[(n / d).toInt()].toLong() larges[ns] = larges[k] + pc - x roughs[ns] = i ns++ } s = ns var i = v for (j in (p..v / p).reversed()) { val c = smalls[j] - pc val e = j * p.toLong() while (i >= e) { smalls[i] -= c i-- } } } var res = larges[0] + (s + 2L * (pc - 1)) * (s - 1L) / 2 - larges.slice(1 until s).sum() for (l in 1 until s) { val q = roughs[l] val m = n / q val e = smalls[(m / q).toInt()] - pc if (e <= l) break val t = roughs.slice(l + 1..e).map { smalls[(m / it).toInt()].toLong() }.sum() res += t - (e - l) * (pc + l - 1L) } return res } fun PrintWriter.solve() { val l = nextLong() val r = nextLong() println(primePi(r) - primePi(l - 1) + primePi(2 * r) - primePi(2 * l)) } fun main() { val writer = PrintWriter(System.out, false) writer.solve() writer.flush() } // region Scanner private var st = StringTokenizer("") private val br = System.`in`.bufferedReader() fun next(): String { while (!st.hasMoreTokens()) st = StringTokenizer(br.readLine()) return st.nextToken() } fun nextInt() = next().toInt() fun nextLong() = next().toLong() fun nextLine() = br.readLine() fun nextDouble() = next().toDouble() // endregion