結果

問題 No.910 素数部分列
ユーザー hiromi_ayasehiromi_ayase
提出日時 2019-10-18 23:23:30
言語 Java21
(openjdk 21)
結果
AC  
実行時間 157 ms / 1,000 ms
コード長 2,872 bytes
コンパイル時間 3,466 ms
コンパイル使用メモリ 81,756 KB
実行使用メモリ 56,956 KB
最終ジャッジ日時 2023-09-08 04:40:40
合計ジャッジ時間 10,680 ms
ジャッジサーバーID
(参考情報)
judge13 / judge11
このコードへのチャレンジ
(要ログイン)

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 67 ms
50,684 KB
testcase_01 AC 68 ms
51,016 KB
testcase_02 AC 67 ms
50,664 KB
testcase_03 AC 68 ms
50,692 KB
testcase_04 AC 67 ms
50,632 KB
testcase_05 AC 67 ms
50,776 KB
testcase_06 AC 66 ms
50,636 KB
testcase_07 AC 65 ms
50,944 KB
testcase_08 AC 64 ms
50,760 KB
testcase_09 AC 65 ms
51,004 KB
testcase_10 AC 65 ms
50,776 KB
testcase_11 AC 65 ms
50,748 KB
testcase_12 AC 65 ms
48,784 KB
testcase_13 AC 66 ms
50,800 KB
testcase_14 AC 68 ms
50,856 KB
testcase_15 AC 65 ms
51,012 KB
testcase_16 AC 66 ms
50,644 KB
testcase_17 AC 65 ms
50,796 KB
testcase_18 AC 71 ms
50,732 KB
testcase_19 AC 67 ms
50,956 KB
testcase_20 AC 66 ms
50,784 KB
testcase_21 AC 66 ms
50,732 KB
testcase_22 AC 65 ms
50,868 KB
testcase_23 AC 152 ms
54,516 KB
testcase_24 AC 151 ms
54,792 KB
testcase_25 AC 149 ms
54,336 KB
testcase_26 AC 150 ms
54,512 KB
testcase_27 AC 151 ms
54,228 KB
testcase_28 AC 151 ms
54,768 KB
testcase_29 AC 152 ms
54,780 KB
testcase_30 AC 150 ms
54,448 KB
testcase_31 AC 149 ms
54,580 KB
testcase_32 AC 152 ms
54,312 KB
testcase_33 AC 153 ms
54,536 KB
testcase_34 AC 156 ms
54,636 KB
testcase_35 AC 157 ms
56,956 KB
testcase_36 AC 152 ms
54,424 KB
testcase_37 AC 152 ms
54,704 KB
testcase_38 AC 155 ms
54,600 KB
testcase_39 AC 152 ms
54,984 KB
testcase_40 AC 151 ms
52,624 KB
testcase_41 AC 150 ms
54,900 KB
testcase_42 AC 151 ms
54,660 KB
testcase_43 AC 146 ms
54,396 KB
testcase_44 AC 150 ms
54,560 KB
testcase_45 AC 152 ms
54,936 KB
testcase_46 AC 150 ms
54,480 KB
testcase_47 AC 148 ms
54,448 KB
testcase_48 AC 144 ms
54,672 KB
testcase_49 AC 146 ms
54,336 KB
testcase_50 AC 147 ms
54,392 KB
testcase_51 AC 143 ms
54,308 KB
testcase_52 AC 148 ms
54,356 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

public class Main {

  private static void solve() {
    int n = ni();
    char[] s = ns();

    int ret = 0;
    int nine = 0;
    int one = 0;
    for (char c : s) {
      int d = c - '0';

      if (d == 3 || d == 5 || d == 7) {
        ret++;
      } else if (d == 1) {
        one++;
      } else {
        nine++;
        if (one >= 1) {
          nine--;
          one--;
          ret++;
        }
      }
    }
    int x = Math.min(one, nine / 2);
    ret += x;
    ret += (one - x) / 2;
    System.out.println(ret);
  }

  public static void main(String[] args) {
    new Thread(null, new Runnable() {
      @Override
      public void run() {
        long start = System.currentTimeMillis();
        String debug = args.length > 0 ? args[0] : null;
        if (debug != null) {
          try {
            is = java.nio.file.Files.newInputStream(java.nio.file.Paths.get(debug));
          } catch (Exception e) {
            throw new RuntimeException(e);
          }
        }
        reader = new java.io.BufferedReader(new java.io.InputStreamReader(is), 32768);
        solve();
        out.flush();
        tr((System.currentTimeMillis() - start) + "ms");
      }
    }, "", 64000000).start();
  }

  private static java.io.InputStream is = System.in;
  private static java.io.PrintWriter out = new java.io.PrintWriter(System.out);
  private static java.util.StringTokenizer tokenizer = null;
  private static java.io.BufferedReader reader;

  public static String next() {
    while (tokenizer == null || !tokenizer.hasMoreTokens()) {
      try {
        tokenizer = new java.util.StringTokenizer(reader.readLine());
      } catch (Exception e) {
        throw new RuntimeException(e);
      }
    }
    return tokenizer.nextToken();
  }

  private static double nd() {
    return Double.parseDouble(next());
  }

  private static long nl() {
    return Long.parseLong(next());
  }

  private static int[] na(int n) {
    int[] a = new int[n];
    for (int i = 0; i < n; i++)
      a[i] = ni();
    return a;
  }

  private static char[] ns() {
    return next().toCharArray();
  }

  private static long[] nal(int n) {
    long[] a = new long[n];
    for (int i = 0; i < n; i++)
      a[i] = nl();
    return a;
  }

  private static int[][] ntable(int n, int m) {
    int[][] table = new int[n][m];
    for (int i = 0; i < n; i++) {
      for (int j = 0; j < m; j++) {
        table[i][j] = ni();
      }
    }
    return table;
  }

  private static int[][] nlist(int n, int m) {
    int[][] table = new int[m][n];
    for (int i = 0; i < n; i++) {
      for (int j = 0; j < m; j++) {
        table[j][i] = ni();
      }
    }
    return table;
  }

  private static int ni() {
    return Integer.parseInt(next());
  }

  private static void tr(Object... o) {
    if (is != System.in)
      System.out.println(java.util.Arrays.deepToString(o));
  }
}

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