結果
問題 | No.1058 素敵な数 |
ユーザー | jp_ste |
提出日時 | 2020-06-05 11:48:05 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 72 ms / 2,000 ms |
コード長 | 3,075 bytes |
コンパイル時間 | 3,954 ms |
コンパイル使用メモリ | 90,840 KB |
実行使用メモリ | 38,168 KB |
最終ジャッジ日時 | 2024-05-08 22:39:49 |
合計ジャッジ時間 | 4,042 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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 | 69 ms
37,788 KB |
testcase_01 | AC | 72 ms
38,168 KB |
testcase_02 | AC | 68 ms
38,128 KB |
testcase_03 | AC | 68 ms
37,752 KB |
testcase_04 | AC | 70 ms
37,920 KB |
testcase_05 | AC | 69 ms
38,068 KB |
testcase_06 | AC | 71 ms
38,140 KB |
testcase_07 | AC | 70 ms
37,628 KB |
testcase_08 | AC | 68 ms
38,140 KB |
testcase_09 | AC | 70 ms
38,128 KB |
ソースコード
package No1058; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.util.ArrayList; import java.util.Collections; import java.util.NoSuchElementException; public class Main { static FastScanner in = new FastScanner(System.in); static PrintWriter out = new PrintWriter(System.out); public static void main(String[] args) { int N = in.nextInt(); ArrayList<Long> sutekiList = sutekiList(primeList()); out.println(sutekiList.get(N-1)); out.close(); } static long[] primeList() { int number = 100001; int count = 0; long[] result = new long[10]; while(true) { if(isPrime(number)) { result[count] = number; count++; if(count >= 10) break; } number++; } return result; } static ArrayList<Long> sutekiList(long[] primeList) { ArrayList<Long> result = new ArrayList<>(); result.add(1L); for(int i=0; i<primeList.length; i++) { for(int j=i; j<primeList.length; j++) { result.add(primeList[i] * primeList[j]); } } Collections.sort(result); return result; } static boolean isPrime(int n) { if(n == 1) return false; for(int i=2; i<n; i++) { if(n % i == 0) return false; } return true; } static class FastScanner { private InputStream in = null; private final byte[] buffer = new byte[1024]; private int ptr = 0; private int buflen = 0; FastScanner(InputStream inStream) { in = inStream; } private boolean hasNextByte() { if (ptr < buflen) { return true; } else { ptr = 0; try { buflen = in.read(buffer); } catch (IOException e) { e.printStackTrace(); } if (buflen <= 0) { return false; } } return true; } private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1; } private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126; } public boolean hasNext() { while (hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte(); } public String next() { if (!hasNext()) throw new NoSuchElementException(); StringBuilder sb = new StringBuilder(); int b = readByte(); while (isPrintableChar(b)) { sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } public long nextLong() { if (!hasNext()) throw new NoSuchElementException(); long n = 0; boolean minus = false; int b = readByte(); if (b == '-') { minus = true; b = readByte(); } if (b < '0' || '9' < b) { throw new NumberFormatException(); } while (true) { if ('0' <= b && b <= '9') { n *= 10; n += b - '0'; } else if (b == -1 || !isPrintableChar(b)) { return minus ? -n : n; } else { throw new NumberFormatException(); } b = readByte(); } } public int nextInt() { long nl = nextLong(); if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException(); return (int) nl; } public double nextDouble() { return Double.parseDouble(next()); } } }