Language: Java

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

public class Main {
    public static void main(String[] args) {
        FastScanner fs = new FastScanner();
        long a = fs.nextLong();
        long b = fs.nextLong();
        long c = gcd(a,b);

        if(c == 1l) {
            System.out.println(1);
        }else {
            ArrayList<Long> pf = new ArrayList<Long>();
            boolean flag = true;
            long r = c;
            while(c%2 == 0) {
                c /= 2;
                if(!(pf.contains(2l))) {
                    pf.add(2l);
                }
            }
            if(r>=9) {
                for(long i=3; i*i<=r; i++) {
                    if (c%i != 0) continue;
                    while(c%i == 0) {
                        c /= i;
                        if(!(pf.contains(i))) {
                            pf.add(i);
                        }
                    }
                }
                if(c != 1) {
                    if(!(pf.contains(c))) {
                        pf.add(c);
                }
            }else {
                if(!(pf.contains(c))) {
                    pf.add(c);
                }
            }
            System.out.println(pf.size()+1);
        }

    }

    public static long gcd(long a,long b) {
        long temp;
        while((temp = a%b) != 0) {
            a = b;
            b = temp;
        }
        return b;
    }
}
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 static boolean isPrintableChar(int c) {
        return 33 <= c && c <= 126;
    }
 
    public boolean hasNext() {
        while (hasNextByte() && !isPrintableChar(buffer[ptr]))
            ptr++;
        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() {
        long nl = nextLong();
        if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE)
            throw new NumberFormatException();
        return (int) nl;
    }
 
    public double nextDouble() {
        return Double.parseDouble(next());
    }
}


Compiler output:
Main.java:47: error: illegal start of expression
    public static long gcd(long a,long b) {
    ^
1 error