結果
問題 | No.7 プライムナンバーゲーム |
ユーザー | CrazyBBB |
提出日時 | 2016-03-06 12:38:50 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 85 ms / 5,000 ms |
コード長 | 3,684 bytes |
コンパイル時間 | 1,984 ms |
コンパイル使用メモリ | 78,472 KB |
実行使用メモリ | 38,184 KB |
最終ジャッジ日時 | 2024-10-01 15:41:59 |
合計ジャッジ時間 | 3,801 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 47 ms
36,660 KB |
testcase_01 | AC | 47 ms
36,736 KB |
testcase_02 | AC | 83 ms
37,900 KB |
testcase_03 | AC | 65 ms
37,864 KB |
testcase_04 | AC | 60 ms
36,660 KB |
testcase_05 | AC | 58 ms
36,376 KB |
testcase_06 | AC | 76 ms
38,184 KB |
testcase_07 | AC | 74 ms
37,900 KB |
testcase_08 | AC | 74 ms
37,800 KB |
testcase_09 | AC | 79 ms
38,056 KB |
testcase_10 | AC | 47 ms
36,792 KB |
testcase_11 | AC | 74 ms
38,016 KB |
testcase_12 | AC | 76 ms
37,912 KB |
testcase_13 | AC | 80 ms
38,120 KB |
testcase_14 | AC | 78 ms
38,016 KB |
testcase_15 | AC | 85 ms
38,156 KB |
testcase_16 | AC | 81 ms
38,028 KB |
ソースコード
import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.NoSuchElementException; public class Main { static boolean[] prime; static boolean[] win; public static void main(String[] args) { FastScanner sc = new FastScanner(); int N = sc.nextInt(); prime = new boolean[N+1]; prime[1] = true; for (int i=2; i*i<=N; i++) { if (prime[i]) continue; for (int j=i*2; j<=N; j+=i) { prime[j] = true; } } ArrayList<Integer> list = new ArrayList<>(); for (int i=2; i<=N; i++) { if (!prime[i]) { list.add(i); } } win = new boolean[N+1]; win[0] = true; win[1] = true; for (int i=2; i<=N; i++) { for (int j=0; j<list.size(); j++) { if (list.get(j) > i) break; if (!win[i-list.get(j)]) { win[i] = true; break; } } } System.out.println(win[N]? "Win" : "Lose"); } } /////////////////////////////////////////////////////// class FastScanner { private final InputStream in = System.in; private final byte[] buffer = new byte[1024]; private int ptr = 0; private int buflen = 0; 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 boolean isPrintableChar(int c) { return 33 <= c && c <= 126;} private void skipUnprintable() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++;} public boolean hasNext() { skipUnprintable(); 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() { if (!hasNext()) throw new NoSuchElementException(); int 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(); } } }