Language: Java

import java.util.ArrayDeque;
import java.util.BitSet;
import java.util.Deque;
import java.util.Scanner;
import java.io.IOException;
import java.io.InputStream;
import java.util.NoSuchElementException;


public class _AE {
    public static void main(String[] args){
        Deque<Integer> deque = new ArrayDeque<Integer>();
        StringBuilder sb = new StringBuilder();
        FS fs = new FS();
        int n = fs.nextInt();
        BitSet bitSet = new BitSet(2000);
        for(int i=0;i<n;i++){
            Integer m = fs.nextInt();
            bitSet.set(m);
            Object[] mm = deque.toArray();
            for (int j=0;j<mm.length;j++){
                int i1 = ((Integer) mm[j]) + m;
                bitSet.set(i1);
                deque.add(i1);
            }
            deque.add(m);
        }
        int q = fs.nextInt();
        for (int i=0;i<q;i++){
           sb.append( bitSet.get(fs.nextInt())?"yes\n":"no\n");
        }
        System.out.print(sb.toString());
    }



public class FS {
    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() {
        return hasNextByte() ? buffer[ptr++] : -1;
    }

    private boolean isPrintableChar(int c) {
        return 33 <= c && c <= 126;
    }

    private void skipUnprintable() {
        while (hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++;
    }

    public boolean hasNext() {
        skipUnprintable();
        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 int nextInt() {
        return (int) nextLong();
    }

    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();
        }
    }
}
}


Compiler output:
Main.java:10: error: class _AE is public, should be declared in a file named _AE.java
public class _AE {
       ^
Main.java:14: error: non-static variable this cannot be referenced from a static context
        FS fs = new FS();
                ^
2 errors