結果
問題 | No.1661 Sum is Prime (Hard Version) |
ユーザー | 箱星 |
提出日時 | 2021-07-10 19:21:28 |
言語 | Kotlin (1.9.23) |
結果 |
AC
|
実行時間 | 1,433 ms / 3,000 ms |
コード長 | 2,602 bytes |
コンパイル時間 | 15,586 ms |
コンパイル使用メモリ | 463,892 KB |
実行使用メモリ | 127,596 KB |
最終ジャッジ日時 | 2024-11-20 23:59:59 |
合計ジャッジ時間 | 35,256 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 | 313 ms
56,932 KB |
testcase_01 | AC | 312 ms
56,804 KB |
testcase_02 | AC | 1,236 ms
110,660 KB |
testcase_03 | AC | 285 ms
54,108 KB |
testcase_04 | AC | 314 ms
56,656 KB |
testcase_05 | AC | 312 ms
56,760 KB |
testcase_06 | AC | 316 ms
56,964 KB |
testcase_07 | AC | 318 ms
56,700 KB |
testcase_08 | AC | 318 ms
56,868 KB |
testcase_09 | AC | 321 ms
56,740 KB |
testcase_10 | AC | 313 ms
56,888 KB |
testcase_11 | AC | 322 ms
56,672 KB |
testcase_12 | AC | 1,184 ms
110,952 KB |
testcase_13 | AC | 1,116 ms
108,624 KB |
testcase_14 | AC | 1,234 ms
115,104 KB |
testcase_15 | AC | 1,398 ms
119,524 KB |
testcase_16 | AC | 1,208 ms
113,172 KB |
testcase_17 | AC | 1,131 ms
111,280 KB |
testcase_18 | AC | 778 ms
99,912 KB |
testcase_19 | AC | 1,060 ms
108,692 KB |
testcase_20 | AC | 798 ms
95,140 KB |
testcase_21 | AC | 954 ms
111,564 KB |
testcase_22 | AC | 1,433 ms
127,596 KB |
testcase_23 | AC | 1,373 ms
123,360 KB |
ソースコード
import java.io.PrintWriter import java.util.* import kotlin.math.* fun floorSqrt(n: Long): Long { if (n <= 1) return n var lo = 1L var hi = n while (hi - lo > 1) { val mid = lo + (hi - lo) / 2 val sq = mid.toBigInteger().let { it * it } if (sq <= n.toBigInteger()) lo = mid else hi = mid } return lo } fun primePi(n: Long): Long { if (n <= 3) return maxOf(0, n - 1) val v = floorSqrt(n).toInt() val smalls = (0..v).map { (it + 1) / 2 }.toMutableList() var s = (v + 1) / 2 val roughs = (0 until s).map { 2 * it + 1 }.toMutableList() val larges = (0 until s).map { (n / (2 * it + 1) + 1) / 2 }.toMutableList() 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