結果

問題 No.887 Collatz
ユーザー OlandOland
提出日時 2019-09-20 21:26:55
言語 Java21
(openjdk 21)
結果
AC  
実行時間 45 ms / 2,000 ms
コード長 6,205 bytes
コンパイル時間 3,271 ms
コンパイル使用メモリ 74,940 KB
実行使用メモリ 51,656 KB
最終ジャッジ日時 2023-10-12 17:48:17
合計ジャッジ時間 5,881 ms
ジャッジサーバーID
（参考情報） 		judge11 / judge12
このコードへのチャレンジ（β）

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 44 ms
49,416 KB
testcase_01 AC 44 ms
49,548 KB
testcase_02 AC 43 ms
49,424 KB
testcase_03 AC 43 ms
49,384 KB
testcase_04 AC 43 ms
49,536 KB
testcase_05 AC 43 ms
49,492 KB
testcase_06 AC 43 ms
49,552 KB
testcase_07 AC 43 ms
49,556 KB
testcase_08 AC 43 ms
49,456 KB
testcase_09 AC 43 ms
49,508 KB
testcase_10 AC 43 ms
49,420 KB
testcase_11 AC 44 ms
51,656 KB
testcase_12 AC 44 ms
49,528 KB
testcase_13 AC 44 ms
49,548 KB
testcase_14 AC 44 ms
49,376 KB
testcase_15 AC 44 ms
49,508 KB
testcase_16 AC 43 ms
49,748 KB
testcase_17 AC 43 ms
49,796 KB
testcase_18 AC 43 ms
49,560 KB
testcase_19 AC 44 ms
49,332 KB
testcase_20 AC 44 ms
49,680 KB
testcase_21 AC 44 ms
49,428 KB
testcase_22 AC 44 ms
49,352 KB
testcase_23 AC 45 ms
49,440 KB
testcase_24 AC 44 ms
49,540 KB
testcase_25 AC 44 ms
49,432 KB
testcase_26 AC 44 ms
49,508 KB
testcase_27 AC 43 ms
49,440 KB
testcase_28 AC 44 ms
49,564 KB
testcase_29 AC 43 ms
49,428 KB
testcase_30 AC 44 ms
49,628 KB
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ソースコード

diff # 

import java.io.*;
import java.util.*;

@SuppressWarnings("unused")
public class Main {
    private FastScanner in = new FastScanner(System.in);
    private PrintWriter out = new PrintWriter(System.out);
    final int MOD = (int)1e9+7;
    long ceil(long a, long b){return (a + b - 1) / b;}

    void solve() throws Exception{
        long n = in.nextLong(), max = n;
        for(int i = 0 ;; i++){
            if(n == 1){
                out.println(i);
                out.println(max);
                return;
            }

            if(n % 2 == 0) n = n / 2;
            else n = 3 * n + 1;
            max = Math.max(max, n);
        }
    }
    //end solve

    public static void main(String[] args) throws Exception {
        new Main().m();
    }

    private void m() throws Exception {
        solve();
        out.flush();
    }

    static class FastScanner {
        Reader input;

        FastScanner() {this(System.in);}
        FastScanner(InputStream stream) {this.input = new BufferedReader(new InputStreamReader(stream));}

        int nextInt() {return (int) nextLong();}

        long nextLong() {
            try {
                int sign = 1;
                int b = input.read();
                while ((b < '0' || '9' < b) && b != '-' && b != '+') {
                    b = input.read();
                }
                if (b == '-') {
                    sign = -1;
                    b = input.read();
                } else if (b == '+') {
                    b = input.read();
                }
                long ret = b - '0';
                while (true) {
                    b = input.read();
                    if (b < '0' || '9' < b) return ret * sign;
                    ret *= 10;
                    ret += b - '0';
                }
            } catch (IOException e) {
                e.printStackTrace();
                return -1;
            }
        }

        double nextDouble() {
            try {
                double sign = 1;
                int b = input.read();
                while ((b < '0' || '9' < b) && b != '-' && b != '+') {
                    b = input.read();
                }
                if (b == '-') {
                    sign = -1;
                    b = input.read();
                } else if (b == '+') {
                    b = input.read();
                }
                double ret = b - '0';
                while (true) {
                    b = input.read();
                    if (b < '0' || '9' < b) break;
                    ret *= 10;
                    ret += b - '0';
                }
                if (b != '.') return sign * ret;
                double div = 1;
                b = input.read();
                while ('0' <= b && b <= '9') {
                    ret *= 10;
                    ret += b - '0';
                    div *= 10;
                    b = input.read();
                }
                return sign * ret / div;
            } catch (IOException e) {
                e.printStackTrace();
                return Double.NaN;
            }
        }

        char nextChar() {
            try {
                int b = input.read();
                while (Character.isWhitespace(b)) {
                    b = input.read();
                }
                return (char) b;
            } catch (IOException e) {
                e.printStackTrace();
                return 0;
            }
        }

        String nextStr() {
            try {
                StringBuilder sb = new StringBuilder();
                int b = input.read();
                while (Character.isWhitespace(b)) {
                    b = input.read();
                }
                while (b != -1 && !Character.isWhitespace(b)) {
                    sb.append((char) b);
                    b = input.read();
                }
                return sb.toString();
            } catch (IOException e) {
                e.printStackTrace();
                return "";
            }
        }

        public int[] nextIntArray(int n) {
            int[] res = new int[n];
            for (int i = 0; i < n; i++) {
                res[i] = nextInt();
            }
            return res;
        }

        public int[] nextIntArrayDec(int n) {
            int[] res = new int[n];
            for (int i = 0; i < n; i++) {
                res[i] = nextInt() - 1;
            }
            return res;
        }

        public int[] nextIntArray1Index(int n) {
            int[] res = new int[n + 1];
            for (int i = 0; i < n; i++) {
                res[i + 1] = nextInt();
            }
            return res;
        }

        public long[] nextLongArray(int n) {
            long[] res = new long[n];
            for (int i = 0; i < n; i++) {
                res[i] = nextLong();
            }
            return res;
        }

        public long[] nextLongArrayDec(int n) {
            long[] res = new long[n];
            for (int i = 0; i < n; i++) {
                res[i] = nextLong() - 1;
            }
            return res;
        }

        public long[] nextLongArray1Index(int n) {
            long[] res = new long[n + 1];
            for (int i = 0; i < n; i++) {
                res[i + 1] = nextLong();
            }
            return res;
        }

        public double[] nextDoubleArray(int n) {
            double[] res = new double[n];
            for (int i = 0; i < n; i++) {
                res[i] = nextDouble();
            }
            return res;
        }

        public Long[] nextWrapperLongArray(int n) {
            Long[] res = new Long[n];
            for (int i = 0; i < n; i++) {
                res[i] = nextLong();
            }
            return res;
        }

        public Long[] nextWrapperLongArrayDec(int n) {
            Long[] res = new Long[n];
            for (int i = 0; i < n; i++) {
                res[i] = nextLong() - 1;
            }
            return res;
        }

        public Long[] nextWrapperLongArray1Index(int n) {
            Long[] res = new Long[n + 1];
            for (int i = 0; i < n; i++) {
                res[i + 1] = nextLong();
            }
            return res;
        }
    }
}
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