結果

問題 No.598 オーバーフローファンタジー
ユーザー tanzakutanzaku
提出日時 2017-11-24 23:46:08
言語 Java19
(openjdk 19.0.1)
結果
AC  
実行時間 46 ms / 2,000 ms
コード長 4,132 bytes
コンパイル時間 1,875 ms
コンパイル使用メモリ 74,420 KB
実行使用メモリ 49,824 KB
最終ジャッジ日時 2023-08-26 22:31:32
合計ジャッジ時間 4,348 ms
ジャッジサーバーID
（参考情報） 		judge14 / judge13
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 46 ms
49,576 KB
testcase_01 AC 45 ms
49,340 KB
testcase_02 AC 43 ms
49,296 KB
testcase_03 AC 42 ms
49,208 KB
testcase_04 AC 42 ms
49,340 KB
testcase_05 AC 42 ms
49,420 KB
testcase_06 AC 43 ms
49,132 KB
testcase_07 AC 43 ms
49,164 KB
testcase_08 AC 40 ms
49,424 KB
testcase_09 AC 42 ms
49,276 KB
testcase_10 AC 41 ms
49,760 KB
testcase_11 AC 40 ms
49,216 KB
testcase_12 AC 41 ms
49,284 KB
testcase_13 AC 40 ms
49,320 KB
testcase_14 AC 41 ms
49,232 KB
testcase_15 AC 41 ms
49,144 KB
testcase_16 AC 41 ms
49,244 KB
testcase_17 AC 42 ms
49,284 KB
testcase_18 AC 41 ms
49,824 KB
testcase_19 AC 41 ms
47,664 KB
testcase_20 AC 41 ms
49,512 KB
testcase_21 AC 41 ms
49,464 KB
testcase_22 AC 42 ms
47,296 KB
testcase_23 AC 42 ms
49,284 KB
testcase_24 AC 42 ms
49,340 KB
testcase_25 AC 41 ms
49,724 KB
testcase_26 AC 42 ms
49,220 KB
testcase_27 AC 42 ms
49,524 KB
testcase_28 AC 45 ms
49,336 KB
testcase_29 AC 46 ms
49,260 KB
testcase_30 AC 45 ms
49,424 KB
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ソースコード

diff # 

import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.IOException;
import java.io.BufferedReader;
import java.io.Reader;
import java.io.InputStreamReader;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        MyInput in = new MyInput(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        TaskB solver = new TaskB();
        solver.solve(1, in, out);
        out.close();
    }

    static class TaskB {
        public void solve(int testNumber, MyInput in, PrintWriter out) {
            int n = in.nextInt();
            long x = in.nextLong();
            long a = in.nextLong();
            long b = in.nextLong();
            out.println(Math.min((x + a - 1) / a, ((1L << (n - 1)) - x + b - 1) / b));
        }

    }

    static class MyInput {
        private final BufferedReader in;
        private static int pos;
        private static int readLen;
        private static final char[] buffer = new char[1024 * 8];
        private static char[] str = new char[500 * 8 * 2];
        private static boolean[] isDigit = new boolean[256];
        private static boolean[] isSpace = new boolean[256];
        private static boolean[] isLineSep = new boolean[256];

        static {
            for (int i = 0; i < 10; i++) {
                isDigit['0' + i] = true;
            }
            isDigit['-'] = true;
            isSpace[' '] = isSpace['\r'] = isSpace['\n'] = isSpace['\t'] = true;
            isLineSep['\r'] = isLineSep['\n'] = true;
        }

        public MyInput(InputStream is) {
            in = new BufferedReader(new InputStreamReader(is));
        }

        public int read() {
            if (pos >= readLen) {
                pos = 0;
                try {
                    readLen = in.read(buffer);
                } catch (IOException e) {
                    throw new RuntimeException();
                }
                if (readLen <= 0) {
                    throw new MyInput.EndOfFileRuntimeException();
                }
            }
            return buffer[pos++];
        }

        public int nextInt() {
            int len = 0;
            str[len++] = nextChar();
            len = reads(len, isSpace);
            int i = 0;
            int ret = 0;
            if (str[0] == '-') {
                i = 1;
            }
            for (; i < len; i++) ret = ret * 10 + str[i] - '0';
            if (str[0] == '-') {
                ret = -ret;
            }
            return ret;
        }

        public long nextLong() {
            int len = 0;
            str[len++] = nextChar();
            len = reads(len, isSpace);
            int i = 0;
            long ret = 0;
            if (str[0] == '-') {
                i = 1;
            }
            for (; i < len; i++) ret = ret * 10 + str[i] - '0';
            if (str[0] == '-') {
                ret = -ret;
            }
            return ret;
        }

        public char nextChar() {
            while (true) {
                final int c = read();
                if (!isSpace[c]) {
                    return (char) c;
                }
            }
        }

        int reads(int len, boolean[] accept) {
            try {
                while (true) {
                    final int c = read();
                    if (accept[c]) {
                        break;
                    }
                    if (str.length == len) {
                        char[] rep = new char[str.length * 3 / 2];
                        System.arraycopy(str, 0, rep, 0, str.length);
                        str = rep;
                    }
                    str[len++] = (char) c;
                }
            } catch (MyInput.EndOfFileRuntimeException e) {
            }
            return len;
        }

        static class EndOfFileRuntimeException extends RuntimeException {
        }

    }
}
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