import java.io.InputStream;
import java.util.Arrays;
import java.util.function.IntUnaryOperator;
import java.util.function.LongUnaryOperator;

public class Main {
    public static void main(String[] args) throws Exception {
        ExtendedScanner sc = new ExtendedScanner();
        FastPrintStream pw = new FastPrintStream();
        solve(sc, pw);
        sc.close();
        pw.flush();
        pw.close();
    }

    public static void solve(ExtendedScanner sc, FastPrintStream pw) {
        int n = sc.nextInt();
        int xor = 0;
        for (int q : MathUtil.factorize(n).values()) {
            xor ^= q;
        }
        pw.println(xor == 0 ? "Bob" : "Alice");
    }
}

/**
 * @author https://atcoder.jp/users/suisen
 */
class FastScanner implements AutoCloseable {
    private final ByteBuffer tokenBuf = new ByteBuffer();
    private final java.io.InputStream in;
    private final byte[] rawBuf = new byte[1 << 14];
    private int ptr = 0;
    private int buflen = 0;

    public FastScanner(java.io.InputStream in) {
        this.in = in;
    }

    public FastScanner() {
        this(new java.io.FileInputStream(java.io.FileDescriptor.in));
    }

    private final int readByte() {
        if (ptr < buflen) return rawBuf[ptr++];
        ptr = 0;
        try {
            buflen = in.read(rawBuf);
            if (buflen > 0) {
                return rawBuf[ptr++];
            } else {
                throw new java.io.EOFException();
            }
        } catch (java.io.IOException e) {
            throw new java.io.UncheckedIOException(e);
        }
    }

    private final int readByteUnsafe() {
        if (ptr < buflen) return rawBuf[ptr++];
        ptr = 0;
        try {
            buflen = in.read(rawBuf);
            if (buflen > 0) {
                return rawBuf[ptr++];
            } else {
                return -1;
            }
        } catch (java.io.IOException e) {
            throw new java.io.UncheckedIOException(e);
        }
    }

    private final int skipUnprintableChars() {
        int b = readByte();
        while (b <= 32 || b >= 127) b = readByte();
        return b;
    }

    private final void loadToken() {
        tokenBuf.clear();
        for (int b = skipUnprintableChars(); 32 < b && b < 127; b = readByteUnsafe()) {
            tokenBuf.append(b);
        }
    }

    public final boolean hasNext() {
        for (int b = readByteUnsafe(); b <= 32 || b >= 127; b = readByteUnsafe()) {
            if (b == -1) return false;
        }
        --ptr;
        return true;
    }

    public final String next() {
        loadToken();
        return new String(tokenBuf.getRawBuf(), 0, tokenBuf.size());
    }

    public final String nextLine() {
        tokenBuf.clear();
        for (int b = readByte(); b != '\n'; b = readByteUnsafe()) {
            if (b == -1) break;
            tokenBuf.append(b);
        }
        return new String(tokenBuf.getRawBuf(), 0, tokenBuf.size());
    }

    public final char nextChar() {
        return (char) skipUnprintableChars();
    }

    public final char[] nextChars() {
        loadToken();
        return tokenBuf.toCharArray();
    }

    public final long nextLong() {
        long n = 0;
        boolean isNegative = false;
        int b = skipUnprintableChars();
        if (b == '-') {
            isNegative = true;
            b = readByteUnsafe();
        }
        if (b < '0' || '9' < b) throw new NumberFormatException();
        while ('0' <= b && b <= '9') {
            // -9223372036854775808 - 9223372036854775807
            if (n >= 922337203685477580l) {
                if (n > 922337203685477580l) {
                    throw new ArithmeticException("long overflow");
                }
                if (isNegative) {
                    if (b >= '9') {
                        throw new ArithmeticException("long overflow");
                    }
                    n = -n - (b + '0');
                    b = readByteUnsafe();
                    if ('0' <= b && b <= '9') {
                        throw new ArithmeticException("long overflow");
                    } else if (b <= 32 || b >= 127) {
                        return n;
                    } else {
                        throw new NumberFormatException();
                    }
                } else {
                    if (b >= '8') {
                        throw new ArithmeticException("long overflow");
                    }
                    n = n * 10 + b - '0';
                    b = readByteUnsafe();
                    if ('0' <= b && b <= '9') {
                        throw new ArithmeticException("long overflow");
                    } else if (b <= 32 || b >= 127) {
                        return n;
                    } else {
                        throw new NumberFormatException();
                    }
                }
            }
            n = n * 10 + b - '0';
            b = readByteUnsafe();
        }
        if (b <= 32 || b >= 127) return isNegative ? -n : n;
        throw new NumberFormatException();
    }
    public final int nextInt() {
        long value = nextLong();
        if ((int) value != value) {
            throw new ArithmeticException("int overflow");
        }
        return (int) value;
    }
    public final double nextDouble() {
        return Double.parseDouble(next());
    }
    public final void close() {
        try {
            in.close();
        } catch (java.io.IOException e) {
            throw new java.io.UncheckedIOException(e);
        }
    }

    private static final class ByteBuffer {
        private static final int DEFAULT_BUF_SIZE = 1 << 12;
        private byte[] buf;
        private int ptr = 0;
        private ByteBuffer(int capacity) {
            this.buf = new byte[capacity];
        }
        private ByteBuffer() {
            this(DEFAULT_BUF_SIZE);
        }
        private ByteBuffer append(int b) {
            if (ptr == buf.length) {
                int newLength = buf.length << 1;
                byte[] newBuf = new byte[newLength];
                System.arraycopy(buf, 0, newBuf, 0, buf.length);
                buf = newBuf;
            }
            buf[ptr++] = (byte) b;
            return this;
        }
        private char[] toCharArray() {
            char[] chs = new char[ptr];
            for (int i = 0; i < ptr; i++) {
                chs[i] = (char) buf[i];
            }
            return chs;
        }
        private byte[] getRawBuf() {
            return buf;
        }
        private int size() {
            return ptr;
        }
        private void clear() {
            ptr = 0;
        }
    }
}


/**
 * @author https://atcoder.jp/users/suisen
 */
final class ExtendedScanner extends FastScanner {
    public ExtendedScanner() {super();}
    public ExtendedScanner(InputStream in) {super(in);}
    public int[] ints(final int n) {
        final int[] a = new int[n];
        Arrays.setAll(a, $ -> nextInt());
        return a;
    }
    public int[] ints(final int n, final IntUnaryOperator f) {
        final int[] a = new int[n];
        Arrays.setAll(a, $ -> f.applyAsInt(nextInt()));
        return a;
    }
    public int[][] ints(final int n, final int m) {
        final int[][] a = new int[n][];
        Arrays.setAll(a, $ -> ints(m));
        return a;
    }
    public int[][] ints(final int n, final int m, final IntUnaryOperator f) {
        final int[][] a = new int[n][];
        Arrays.setAll(a, $ -> ints(m, f));
        return a;
    }
    public long[] longs(final int n) {
        final long[] a = new long[n];
        Arrays.setAll(a, $ -> nextLong());
        return a;
    }
    public long[] longs(final int n, final LongUnaryOperator f) {
        final long[] a = new long[n];
        Arrays.setAll(a, $ -> f.applyAsLong(nextLong()));
        return a;
    }
    public long[][] longs(final int n, final int m) {
        final long[][] a = new long[n][];
        Arrays.setAll(a, $ -> longs(m));
        return a;
    }
    public long[][] longs(final int n, final int m, final LongUnaryOperator f) {
        final long[][] a = new long[n][];
        Arrays.setAll(a, $ -> longs(m, f));
        return a;
    }
    public char[][] charArrays(final int n) {
        final char[][] c = new char[n][];
        Arrays.setAll(c, $ -> nextChars());
        return c;
    }
    public double[] doubles(final int n) {
        final double[] a = new double[n];
        Arrays.setAll(a, $ -> nextDouble());
        return a;
    }
    public double[][] doubles(final int n, final int m) {
        final double[][] a = new double[n][];
        Arrays.setAll(a, $ -> doubles(m));
        return a;
    }
    public String[] strings(final int n) {
        final String[] s = new String[n];
        Arrays.setAll(s, $ -> next());
        return s;
    }
}

/**
 * @author https://atcoder.jp/users/suisen
 */
class FastPrintStream implements AutoCloseable {
    private static final int INT_MAX_LEN = 11;
    private static final int LONG_MAX_LEN = 20;

    private int precision = 9;

    private static final int BUF_SIZE = 1 << 14;
    private static final int BUF_SIZE_MINUS_INT_MAX_LEN = BUF_SIZE - INT_MAX_LEN;
    private static final int BUF_SIZE_MINUS_LONG_MAX_LEN = BUF_SIZE - LONG_MAX_LEN;
    private final byte[] buf = new byte[BUF_SIZE];
    private int ptr = 0;
    private final java.lang.reflect.Field strField;
    private final java.nio.charset.CharsetEncoder encoder;

    private final java.io.OutputStream out;

    public FastPrintStream(java.io.OutputStream out) {
        this.out = out;
        java.lang.reflect.Field f;
        try {
            f = java.lang.String.class.getDeclaredField("value");
            f.setAccessible(true);
        } catch (NoSuchFieldException | SecurityException e) {
            f = null;
        }
        this.strField = f;
        this.encoder = java.nio.charset.StandardCharsets.US_ASCII.newEncoder();
    }

    public FastPrintStream(java.io.File file) throws java.io.IOException {
        this(new java.io.FileOutputStream(file));
    }

    public FastPrintStream(java.lang.String filename) throws java.io.IOException {
        this(new java.io.File(filename));
    }

    public FastPrintStream() {
        this(new java.io.FileOutputStream(java.io.FileDescriptor.out));
    }

    public FastPrintStream println() {
        if (ptr == BUF_SIZE) internalFlush();
        buf[ptr++] = (byte) '\n';
        return this;
    }

    public FastPrintStream println(java.lang.Object o) {
        return print(o).println();
    }

    public FastPrintStream println(java.lang.String s) {
        return print(s).println();
    }

    public FastPrintStream println(char[] s) {
        return print(s).println();
    }

    public FastPrintStream println(char c) {
        return print(c).println();
    }

    public FastPrintStream println(int x) {
        return print(x).println();
    }

    public FastPrintStream println(long x) {
        return print(x).println();
    }

    public FastPrintStream println(double d, int precision) {
        return print(d, precision).println();
    }

    public FastPrintStream println(double d) {
        return print(d).println();
    }

    private FastPrintStream print(byte[] bytes) {
        int n = bytes.length;
        if (ptr + n > BUF_SIZE) {
            internalFlush();
            try {
                out.write(bytes);
            } catch (java.io.IOException e) {
                throw new java.io.UncheckedIOException(e);
            }
        } else {
            System.arraycopy(bytes, 0, buf, ptr, n);
            ptr += n;
        }
        return this;
    }

    public FastPrintStream print(java.lang.Object o) {
        return print(o.toString());
    }

    public FastPrintStream print(java.lang.String s) {
        if (strField == null) {
            return print(s.getBytes());
        } else {
            try {
                Object value = strField.get(s);
                if (value instanceof byte[]) {
                    return print((byte[]) value);
                } else {
                    return print((char[]) value);
                }
            } catch (IllegalAccessException e) {
                return print(s.getBytes());
            }
        }
    }

    public FastPrintStream print(char[] s) {
        try {
            return print(encoder.encode(java.nio.CharBuffer.wrap(s)).array());
        } catch (java.nio.charset.CharacterCodingException e) {
            byte[] bytes = new byte[s.length];
            for (int i = 0; i < s.length; i++) {
                bytes[i] = (byte) s[i];
            }
            return print(bytes);
        }
    }

    public FastPrintStream print(char c) {
        if (ptr == BUF_SIZE) internalFlush();
        buf[ptr++] = (byte) c;
        return this;
    }

    public FastPrintStream print(int x) {
        if (ptr > BUF_SIZE_MINUS_INT_MAX_LEN) internalFlush();
        if (-10 < x && x < 10) {
            if (x < 0) {
                buf[ptr++] = '-';
                x = -x;
            }
            buf[ptr++] = (byte) ('0' + x);
            return this;
        }
        int d;
        if (x < 0) {
            if (x == Integer.MIN_VALUE) {
                buf[ptr++] = '-'; buf[ptr++] = '2'; buf[ptr++] = '1'; buf[ptr++] = '4';
                buf[ptr++] = '7'; buf[ptr++] = '4'; buf[ptr++] = '8'; buf[ptr++] = '3';
                buf[ptr++] = '6'; buf[ptr++] = '4'; buf[ptr++] = '8';
                return this;
            }
            d = len(x = -x);
            buf[ptr++] = '-';
        } else {
            d = len(x);
        }
        int j = ptr += d; 
        while (x > 0) {
            buf[--j] = (byte) ('0' + (x % 10));
            x /= 10;
        }
        return this;
    }

    public FastPrintStream print(long x) {
        if ((int) x == x) return print((int) x);
        if (ptr > BUF_SIZE_MINUS_LONG_MAX_LEN) internalFlush();
        int d;
        if (x < 0) {
            if (x == Long.MIN_VALUE) {
                buf[ptr++] = '-'; buf[ptr++] = '9'; buf[ptr++] = '2'; buf[ptr++] = '2';
                buf[ptr++] = '3'; buf[ptr++] = '3'; buf[ptr++] = '7'; buf[ptr++] = '2';
                buf[ptr++] = '0'; buf[ptr++] = '3'; buf[ptr++] = '6'; buf[ptr++] = '8';
                buf[ptr++] = '5'; buf[ptr++] = '4'; buf[ptr++] = '7'; buf[ptr++] = '7';
                buf[ptr++] = '5'; buf[ptr++] = '8'; buf[ptr++] = '0'; buf[ptr++] = '8';
                return this;
            }
            d = len(x = -x);
            buf[ptr++] = '-';
        } else {
            d = len(x);
        }
        int j = ptr += d; 
        while (x > 0) {
            buf[--j] = (byte) ('0' + (x % 10));
            x /= 10;
        }
        return this;
    }

    public FastPrintStream print(double d, int precision) {
        if (d < 0) {
            print('-');
            d = -d;
        }
        d += Math.pow(10, -precision) / 2;
        print((long) d).print('.');
        d -= (long) d;
        for(int i = 0; i < precision; i++){
            d *= 10;
            print((int) d);
            d -= (int) d;
        }
        return this;
    }

    public FastPrintStream print(double d) {
        return print(d, precision);
    }

    public void setPrecision(int precision) {
        this.precision = precision;
    }

    private void internalFlush() {
        try {
            out.write(buf, 0, ptr);
            ptr = 0;
        } catch (java.io.IOException e) {
            throw new java.io.UncheckedIOException(e);
        }
    }

    public void flush() {
        try {
            out.write(buf, 0, ptr);
            out.flush();
            ptr = 0;
        } catch (java.io.IOException e) {
            throw new java.io.UncheckedIOException(e);
        }
    }

    public void close() {
        try {
            out.close();
        } catch (java.io.IOException e) {
            throw new java.io.UncheckedIOException(e);
        }
    }

    private static int len(int x) {
        return
            x >= 1000000000 ? 10 :
            x >= 100000000  ?  9 :
            x >= 10000000   ?  8 :
            x >= 1000000    ?  7 :
            x >= 100000     ?  6 :
            x >= 10000      ?  5 :
            x >= 1000       ?  4 :
            x >= 100        ?  3 :
            x >= 10         ?  2 : 1;
    }

    private static int len(long x) {
        return
            x >= 1000000000000000000l ? 19 :
            x >= 100000000000000000l  ? 18 :
            x >= 10000000000000000l   ? 17 :
            x >= 1000000000000000l    ? 16 :
            x >= 100000000000000l     ? 15 :
            x >= 10000000000000l      ? 14 :
            x >= 1000000000000l       ? 13 :
            x >= 100000000000l        ? 12 :
            x >= 10000000000l         ? 11 : 10;
    }
}

/**
 * @author https://atcoder.jp/users/suisen
 */
final class MathUtil {
    private MathUtil(){}
    
    public static java.util.HashMap<Long, Integer> factorize(long n) {
        java.util.HashMap<Long, Integer> factors = new java.util.HashMap<>();
        for (long p = 2; p * p <= n; p++) {
            int q = 0;
            while (n % p == 0) {
                n /= p;
                q++;
            }
            if (q > 0) factors.put(p, q);
        }
        if (n > 1) factors.put(n, 1);
        return factors;
    }
    public static java.util.ArrayList<Long> divisors(long n) {
        java.util.ArrayList<Long> div = new java.util.ArrayList<>();
        for (long i = 1; i * i <= n; i++) {
            if (n % i == 0) {
                div.add(i);
                long j = n / i;
                if (i != j) div.add(j);
            }
        }
        return div;
    }
    private static java.util.HashMap<Long, Integer> mergeFactor(java.util.HashMap<Long, Integer> fac1, java.util.HashMap<Long, Integer> fac2) {
        if (fac1.size() < fac2.size()) {
            return mergeFactor(fac2, fac1);
        }
        for (java.util.Map.Entry<Long, Integer> e : fac2.entrySet()) {
            long prime = e.getKey();
            int num = e.getValue();
            if (fac1.containsKey(prime)) {
                fac1.put(prime, Math.max(fac1.get(prime), num));
            } else {
                fac1.put(prime, num);
            }
        }
        return fac1;
    }
    public static java.util.HashMap<Long, Integer> factorizedLCM(long a, long b) {
        return mergeFactor(factorize(a), factorize(b));
    }
    public static java.util.HashMap<Long, Integer> factorizedLCM(long... xs) {
        java.util.HashMap<Long, Integer> lcm = new java.util.HashMap<>();
        for (long x : xs) lcm = mergeFactor(lcm, factorize(x));
        return lcm;
    }
    public static long lcm(long a, long b) {
        return (a / gcd(a, b)) * b;
    }
    public static long gcd(long a, long b) {
        a = Math.abs(a);
        b = Math.abs(b);
        if (a < b) {
            long tmp = a; a = b; b = tmp;
        }
        if (b == 0) return a;
        if (a == 0) return b;
        for (long r = a % b; r != 0; r = a % b) {
            a = b; b = r;
        }
        return b;
    }
    public static long gcd(long... xs) {
        long gcd = 0;
        for (long x : xs) gcd = gcd(gcd, x);
        return gcd;
    }
    /**
     * Return one of the solutions to {@code ax+by=gcd(a, b)}.
     * 
     * @return {@code x}, {@code y}, {@code gcd(a, b)}.
     * @param a a of ax+by=gcd(a, b).
     * @param b b of ax+by=gcd(a, b).
     */
    public static long[] extGCD(long a, long b) {
        long s = a, sx = 1, sy = 0; // ax + by = s
        long t = b, tx = 0, ty = 1; // ax + by = t
        for (long tmp, u, ux, uy; s % t != 0;) {
            // u: ax + by = s % t
            tmp = s / t;
            u  = s  - t  * tmp; s  = t ; t  = u ;
            ux = sx - tx * tmp; sx = tx; tx = ux;
            uy = sy - ty * tmp; sy = ty; ty = uy;
        }
        return new long[]{tx, ty, a * tx + b * ty};
    }
    public static long inv(long a, long MOD) {
        long b = MOD;
        long u = 1, v = 0;
        while (b > 0) {
            long t = a / b;
            a -= t * b;
            long tmp1 = a; a = b; b = tmp1;
            u -= t * v;
            long tmp2 = u; u = v; v = tmp2;
        }
        u %= MOD;
        return u < 0 ? u + MOD : u;
    }
    /**
     * @return pair(g, x) s.t. g = gcd(a, b), xa = g (mod b), 0 <= x < b/g
     */
    public static long[] gcdInv(long a, long mod) {
        if ((a %= mod) < 0) a += mod;
        if (a == 0) return new long[]{mod, 0};
        long s = mod, t = a;
        long m0 = 0, m1 = 1;
        while (t > 0) {
            long u = s / t;
            s -= t * u;
            m0 -= m1 * u;
            long tmp;
            tmp = s; s = t; t = tmp;
            tmp = m0; m0 = m1; m1 = tmp;
        }
        if (m0 < 0) m0 += mod / s;
        return new long[]{s, m0};
    }
    public static long pow(long a, long b, long mod) {
        if (mod == 1) return 0;
        if ((a %= mod) < 0) a += mod;
        long pow = 1;
        for (long p = a, c = 1; b > 0;) {
            long lsb = b & -b;
            while (lsb != c) {
                c <<= 1;
                p = (p * p) % mod;
            }
            pow = (pow * p) % mod;
            b ^= lsb;
        }
        return pow;
    }
    public static java.util.OptionalLong sqrt(long a, long p) {
        if ((a %= p) < 0) a += p;
        if (a == 0) return java.util.OptionalLong.of(0);
        if (a == 1) return java.util.OptionalLong.of(1);
        if (pow(a, (p - 1) >> 1, p) != 1) return java.util.OptionalLong.empty();
        if ((p & 3) == 3) {
            return java.util.OptionalLong.of(pow(a, (p + 1) >> 2, p));
        }
        if ((p & 7) == 5) {
            if (pow(a, (p - 1) >> 2, p) == 1) {
                return java.util.OptionalLong.of(pow(a, (p + 3) >> 3, p));
            } else {
                return java.util.OptionalLong.of(pow(2, (p - 1) >> 2, p) * pow(a, (p + 3) >> 3, p) % p);
            }
        }
        long S = 0;
        long Q = p - 1;
        while ((Q & 1) == 0) {
            ++S;
            Q >>= 1;
        }
        long z = 1;
        while (pow(z, (p - 1) >> 1, p) != p - 1) ++z;
        long c = pow(z, Q, p);
        long R = pow(a, (Q + 1) / 2, p);
        long t = pow(a, Q, p);
        long M = S;
        while (t != 1) {
            long cur = t;
            int i;
            for (i = 1; i < M; i++) {
                cur = cur * cur % p;
                if (cur == 1) break;
            }
            long b = pow(c, 1l << (M - i - 1), p);
            R = R * b % p;
            t = t * b % p * b % p;
            c = b * b % p;
            M = i;
        }
        return java.util.OptionalLong.of(R);
    }
    public static long eulerPhi(long n) {
        for (long p : factorize(n).keySet()) {
            n = (n / p) * (p - 1);
        }
        return n;
    }
    public static long comb(long n, long r) {
        if (n < r) return 0;
        r = Math.min(r, n - r);
        long res = 1; for (long d = 1; d <= r; d++) {res *= n--; res /= d;}
        return res;
    }
    public static long ceilSqrt(long n) {
        long l = -1, r = n;
        while (r - l > 1) {
            long m = (r + l) >> 1;
            if (m * m >= n) r = m;
            else l = m;
        }
        return r;
    }
    public static long floorSqrt(long n) {
        long l = 0, r = n + 1;
        while (r - l > 1) {
            long m = (r + l) >> 1;
            if (m * m > n) r = m;
            else l = m;
        }
        return l;
    }
    public static long[] crt(long[] r, long[] m){
        if (r.length != m.length) {
            throw new AssertionError("Different length.");
        }
        int n = r.length;
        long r0 = 0, m0 = 1;
        for(int i=0; i<n; i++){
            if (m[i] < 1) {
                throw new AssertionError();
            }
            long m1 = m[i];
            long r1 = r[i] % m1;
            if (r1 < 0) r1 += m1;
            if (m0 < m1){
                long tmp;
                tmp = r0; r0 = r1; r1 = tmp;
                tmp = m0; m0 = m1; m1 = tmp;
            }
            if (m0 % m1 == 0){
                if (r0 % m1 != r1) return new long[]{0, 0};
                continue;
            }
            long[] gi = gcdInv(m0, m1);
            long g = gi[0], im = gi[1];
            long u1 = m1 / g;
            if((r1 - r0) % g != 0) return new long[]{0, 0};
            long x = (r1 - r0) / g % u1 * im % u1;
            r0 += x * m0;
            m0 *= u1;
            if (r0 < 0) r0 += m0;
        } 
        return new long[]{r0, m0};
    }
    public static long garner(long[] c, long[] mods) {
        int n = c.length + 1;
        long[] cnst = new long[n];
        long[] coef = new long[n];
        java.util.Arrays.fill(coef, 1);
        for (int i = 0; i < n - 1; i++) {
            long m1 = mods[i];
            long v = (c[i] - cnst[i] + m1) % m1;
            v = v * pow(coef[i], m1 - 2, m1) % m1;

            for (int j = i + 1; j < n; j++) {
                long m2 = mods[j];
                cnst[j] = (cnst[j] + coef[j] * v) % m2;
                coef[j] = (coef[j] * m1) % m2;
            }
        }
        return cnst[n - 1];
    }
    public static long floorSum(long n, long m, long a, long b){
        long ans = 0;
        if(a >= m){
            ans += (n - 1) * n * (a / m) / 2;
            a %= m;
        }
        if(b >= m){
            ans += n * (b / m);
            b %= m;
        }
        long ymax = (a * n + b) / m;
        long xmax = ymax * m - b;
        if (ymax == 0) return ans;
        ans += (n - (xmax + a - 1) / a) * ymax;
        ans += floorSum(ymax, a, m, (a - xmax % a) % a);
        return ans;
    }
    /**
     * @param m prime
     */
    public static int primitiveRoot(int m) {
        if (m == 2) return 1;
        if (m == 167772161) return 3;
        if (m == 469762049) return 3;
        if (m == 754974721) return 11;
        if (m == 998244353) return 3;
        int[] divs = new int[20];
        divs[0] = 2;
        int cnt = 1;
        int x = (m - 1) / 2;
        while (x % 2 == 0) x /= 2;
        for (int i = 3; (long) i * i <= x; i += 2) {
            if (x % i == 0) {
                divs[cnt++] = i;
                while (x % i == 0) x /= i;
            }
        }
        if (x > 1) {
            divs[cnt++] = x;
        }
        for (int g = 2; ; g++) {
            boolean ok = true;
            for (int i = 0; i < cnt; i++) {
                if (pow(g, (m - 1) / divs[i], m) == 1) {
                    ok = false;
                    break;
                }
            }
            if (ok) return g;
        }
    }
}