description: Polycarp had an array a of 3 positive integers. He wrote out the sums of all non-empty subsequences of this array, sorted them in non-decreasing order, and got an array b of 7 integers.
  
  For example, if a = \{1, 4, 3\}, then Polycarp wrote out 1, 4, 3, 1 + 4 = 5, 1 + 3 = 4, 4 + 3 = 7, 1 + 4 + 3 = 8. After sorting, he got an array b = \{1, 3, 4, 4, 5, 7, 8\}.
  
  Unfortunately, Polycarp lost the array a. He only has the array b left. Help him to restore the array a.
  
  Input
  
  The first line contains one integer t (1 ≤ t ≤ 5000) — the number of test cases.
  
  Each test case consists of one line which contains 7 integers b_1, b_2, ..., b_7 (1 ≤ b_i ≤ 10^9; b_i ≤ b_{i+1}). 
  
  Additional constraint on the input: there exists at least one array a which yields this array b as described in the statement.
  
  Output
  
  For each test case, print 3 integers — a_1, a_2 and a_3. If there can be several answers, print any of them.
  
  Example
  
  Input
  
  
  5
  1 3 4 4 5 7 8
  1 2 3 4 5 6 7
  300000000 300000000 300000000 600000000 600000000 600000000 900000000
  1 1 2 999999998 999999999 999999999 1000000000
  1 2 2 3 3 4 5
  
  
  Output
  
  
  1 4 3
  4 1 2
  300000000 300000000 300000000
  999999998 1 1
  1 2 2
  
  Note
  
  The subsequence of the array a is a sequence that can be obtained from a by removing zero or more of its elements.
  
  Two subsequences are considered different if index sets of elements included in them are different. That is, the values of the elements don't matter in the comparison of subsequences. In particular, any array of length 3 has exactly 7 different non-empty subsequences.
solution: import java.io.*;
  import java.util.*;
  import java.util.ArrayList;
  import java.util.Arrays.*;
  import java.util.Map.Entry;
  
  import static java.util.Collections.*;
  import static java.lang.Integer.parseInt;
  import static java.lang.Math.*;
  import static java.lang.String.format;
  import static java.util.Arrays.*;
  
  public class CC {
      static final int SCAN_LINE_LENGTH = 1_000_002;
      private static final boolean thread = false;
      @SuppressWarnings("all")
      static final boolean HAS_TEST_CASES = (1 == 1) ? true : false;
  
      static int n, a[], e[][], vis[], m, b[];
      @SuppressWarnings("all")
      private static ArrayList<Integer> adj[], v = new ArrayList<>();
      static long gcd = 1;
      static HashMap<Integer, Integer> pos;
  
      @SuppressWarnings("unchecked")
      static void solve() throws Exception {
          a = na(7);
          int x, y, z;
          for (int i = 0; i < 7; i++) {
              for (int j = i + 1; j < 7; j++) {
                  for (int k = j + 1; k < 7; k++) {
                      if (check(a, i, j, k)) {
                          pn(a[i] + " " + a[j] + " " + a[k]);
                          return;
                      }
                  }
              }
          }
          pn("no");
      }
  
      private static boolean check(int[] a, int i, int j, int k) {
          int[] ar = new int[a.length];
          ar[0] = a[i];
          ar[1] = a[j];
          ar[2] = a[k];
          ar[3] = ar[0] + ar[1];
          ar[4] = ar[0] + ar[2];
          ar[5] = ar[1] + ar[2];
          ar[6] = ar[0] + ar[1] + ar[2];
          sort(ar);
          deepCopy = deepCopy(a);
          sort(deepCopy);
          return Arrays.equals(deepCopy, ar);
      }
  
      public static void main(final String[] args) throws Exception {
          if (!thread) {
              final int TEST_CASES = HAS_TEST_CASES ? ni() : 1;
              for (int i = 1; i <= TEST_CASES; i++) {
                  // pni(i + " t");
                  // out.print("Case #" + (i) + ": ");
                  try {
                      solve();
                  } catch (final Exception e) {
                      // pni("idk Exception");
                      // e.printStackTrace(System.err);
                      // System.exit(0);
                      throw e;
                  }
              }
              out.flush();
          }
          r.close();
          out.close();
      }
  
      @SuppressWarnings("all")
      private static final int MOD = (int) (1e9 + 7), MOD_FFT = 998244353;
      private static final Reader r = new Reader();
      @SuppressWarnings("all")
      private static final int[][] GRID_DIRECTION_4 = { { 1, 0 }, { -1, 0 }, { 0, 1 }, { 0, -1 } };
      @SuppressWarnings("all")
      private static final int[][] GRID_DIRECTION_ALL = { { 1, 0 }, { -1, 0 }, { 0, 1 }, { 0, -1 }, { 1, 1 }, { -1, 1 },
              { 1, -1 }, { -1, -1 } };
      private static final PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
      private static int[] deepCopy;
  
      public static long[] enumPows(int a, final int n, final int mod) {
          a %= mod;
          final long[] pows = new long[n + 1];
          pows[0] = 1;
          for (int i = 1; i <= n; i++)
              pows[i] = pows[i - 1] * a % mod;
          return pows;
      }
  
      @SuppressWarnings("all")
      private static ArrayList<Integer> sieve(final int n) {
          final ArrayList<Integer> p = new ArrayList<>();
          final int[] f = new int[n + 1];
          for (int i = 2; i <= n; i++) {
              if (f[i] == 1)
                  continue;
              for (int j = i * i; j <= n && j < f.length; j += i) {
                  f[j] = 1;
              }
          }
          for (int i = 2; i < f.length; i++) {
              if (f[i] == 0)
                  p.add(i);
          }
          return p;
      }
  
      @SuppressWarnings("all")
      private static void s(final int[] a) {
          final Integer[] t = new Integer[a.length];
          for (int i = 0; i < t.length; i++) {
              t[i] = a[i];
          }
          sort(t);
          for (int i = 0; i < t.length; i++) {
              a[i] = t[i];
          }
      }
  
      int pow(int a, int b, final int m) {
          int ans = 1;
          while (b != 0) {
              if ((b & 1) != 0)
                  ans = (ans * a) % m;
              b /= 2;
              a = (a * a) % m;
          }
          return ans;
      }
  
      int modInverse(final int k) {
          return pow(k, MOD - 2, MOD);
      }
  
      @SuppressWarnings("all")
      private static void swap(final int i, final int j) {
          final int temp = a[i];
          a[i] = a[j];
          a[j] = temp;
      }
  
      @SuppressWarnings("all")
      private static boolean isMulOverflow(final long A, final long B) {
          if (A == 0 || B == 0)
              return false;
          final long result = A * B;
          if (A == result / B)
              return true;
          return false;
      }
  
      @SuppressWarnings("all")
      private static int gcd(final int a, final int b) {
          if (b == 0)
              return a;
          return gcd(b, a % b);
      }
  
      @SuppressWarnings("all")
      private static long gcd(final long a, final long b) {
          if (b == 0)
              return a;
          return gcd(b, a % b);
      }
  
      @SuppressWarnings("all")
      private static class Pair<T, E> implements Comparable<Pair<T, E>> {
          T fir;
          E snd;
  
          Pair() {
          }
  
          Pair(final T x, final E y) {
              this.fir = x;
              this.snd = y;
          }
  
          /*
           * (non-Javadoc)
           * 
           * @see java.lang.Object#hashCode()
           */
  
          /*
           * (non-Javadoc)
           * 
           * @see java.lang.Object#toString()
           */
  
          @Override
          public String toString() {
              return "Pair [fir = " + fir + ", snd = " + snd + "]";
          }
  
          @Override
          public int hashCode() {
              final int prime = 31;
              int result = 1;
              result = prime * result + ((fir == null) ? 0 : fir.hashCode());
              result = prime * result + ((snd == null) ? 0 : snd.hashCode());
              return result;
          }
  
          /*
           * (non-Javadoc)
           * 
           * @see java.lang.Object#equals(java.lang.Object)
           */
  
          @Override
          public boolean equals(final Object obj) {
              if (this == obj)
                  return true;
              if (obj == null)
                  return false;
              if (getClass() != obj.getClass())
                  return false;
              final Pair other = (Pair) obj;
              if (fir == null) {
                  if (other.fir != null)
                      return false;
              } else if (!fir.equals(other.fir))
                  return false;
              if (snd == null) {
                  if (other.snd != null)
                      return false;
              } else if (!snd.equals(other.snd))
                  return false;
              return true;
          }
  
          /**
           * @return the fir
           */
          public T getFir() {
              return fir;
          }
  
          /**
           * @param fir the fir to set
           */
          public void setFir(final T fir) {
              this.fir = fir;
          }
  
          /**
           * @return the snd
           */
          public E getSnd() {
              return snd;
          }
  
          /**
           * @param snd the snd to set
           */
          public void setSnd(final E snd) {
              this.snd = snd;
          }
  
          @Override
          @SuppressWarnings("unchecked")
          public int compareTo(final Pair<T, E> o) {
              final int c = ((Comparable<T>) fir).compareTo(o.fir);
              return c != 0 ? c : ((Comparable<E>) snd).compareTo(o.snd);
          }
          // @Override
          // @SuppressWarnings("unchecked")
          // public int compareTo(final Pair<T, E> o) {
          // final int c = ((Comparable<T>) fir).compareTo(o.fir);
          // return c;
          // }
  
      }
  
      @SuppressWarnings("all")
      private static class pi implements Comparable<pi> {
          int fir, snd;
  
          pi() {
          }
  
          pi(final int a, final int b) {
              fir = a;
              snd = b;
          }
  
          public int compareTo(final pi o) {
              return fir == o.fir ? snd - o.snd : fir - o.fir;
          }
  
          @Override
          public int hashCode() {
              final int prime = 31;
              int result = 1;
              result = prime * result + fir;
              result = prime * result + snd;
              return result;
          }
  
          @Override
          public boolean equals(final Object obj) {
              if (this == obj)
                  return true;
              if (obj == null)
                  return false;
              if (getClass() != obj.getClass())
                  return false;
              final pi other = (pi) obj;
              if (fir != other.fir)
                  return false;
              if (snd != other.snd)
                  return false;
              return true;
          }
  
      }
  
      @SuppressWarnings("all")
      private static <T> void checkV(final Vector<T> adj[], final int i) {
          adj[i] = adj[i] == null ? new Vector<>() : adj[i];
      }
  
      @SuppressWarnings("all")
      private static <T> void checkV(final ArrayList<T> adj[], final int i) {
          adj[i] = adj[i] == null ? new ArrayList<>() : adj[i];
      }
  
      @SuppressWarnings("all")
      private static int[] na(final int n) throws Exception {
          final int[] a = new int[n];
          for (int i = 0; i < n; i++) {
              a[i] = ni();
          }
          return a;
      }
  
      @SuppressWarnings("all")
      private static int[] na1(final int n) throws Exception {
          final int[] a = new int[n + 1];
          for (int i = 1; i < a.length; i++) {
              a[i] = ni();
          }
          return a;
      }
  
      @SuppressWarnings("all")
      private static String n() throws IOException {
          return r.readToken();
      }
  
      @SuppressWarnings("all")
      private static char[] ns() throws IOException {
          return r.readToken().toCharArray();
      }
  
      @SuppressWarnings("all")
      private static String nln() throws IOException {
          return r.readLine();
      }
  
      private static int ni() throws IOException {
          return r.nextInt();
      }
  
      @SuppressWarnings("all")
      private static long nl() throws IOException {
          return r.nextLong();
      }
  
      @SuppressWarnings("all")
      private static double nd() throws IOException {
          return r.nextDouble();
      }
  
      @SuppressWarnings("all")
      private static void p(final Object o) {
          out.print(o);
      }
  
      @SuppressWarnings("all")
      private static void pn(final Object o) {
          out.println(o);
      }
  
      @SuppressWarnings("all")
      private static void pn() {
          out.println("");
      }
  
      @SuppressWarnings("all")
      private static void pi(final Object o) {
          out.print(o);
          out.flush();
      }
  
      @SuppressWarnings("all")
      private static void pni() {
          out.println("");
          out.flush();
      }
  
      private static void pni(final Object o) {
          out.println(o);
          out.flush();
      }
  
      private static class Reader {
          private final int BUFFER_SIZE = 1 << 17;
          private final DataInputStream din;
          private final byte[] buffer;
          private int bufferPointer, bytesRead;
          // private StringTokenizer st;
  
          public Reader() {
              din = new DataInputStream(System.in);
              buffer = new byte[BUFFER_SIZE];
              bufferPointer = bytesRead = 0;
          }
  
          @SuppressWarnings("all")
          public Reader(final String file_name) throws IOException {
              din = new DataInputStream(new FileInputStream(file_name));
              buffer = new byte[BUFFER_SIZE];
              bufferPointer = bytesRead = 0;
          }
  
          final byte[] buf = new byte[SCAN_LINE_LENGTH];
  
          public String readLine() throws IOException {
              int cnt = 0;
              int c;
              o: while ((c = read()) != -1) {
                  if (c == '\n')
                      if (cnt == 0)
                          continue o;
                      else
                          break;
                  buf[cnt++] = (byte) c;
              }
              return new String(buf, 0, cnt);
          }
  
          public String readToken() throws IOException {
              int cnt = 0;
              int c;
              o: while ((c = read()) != -1) {
                  if (!(c >= 33 && c <= 126))
                      if (cnt == 0)
                          continue o;
                      else
                          break;
                  buf[cnt++] = (byte) c;
              }
              return new String(buf, 0, cnt);
          }
  
          public int nextInt() throws IOException {
              int ret = 0;
              byte c = read();
              while (c <= ' ')
                  c = read();
              final boolean neg = (c == '-');
              if (neg)
                  c = read();
              do {
                  ret = ret * 10 + c - '0';
              } while ((c = read()) >= '0' && c <= '9');
  
              if (neg)
                  return -ret;
              return ret;
          }
  
          public long nextLong() throws IOException {
              long ret = 0;
              byte c = read();
              while (c <= ' ')
                  c = read();
              final boolean neg = (c == '-');
              if (neg)
                  c = read();
              do {
                  ret = ret * 10 + c - '0';
              } while ((c = read()) >= '0' && c <= '9');
              if (neg)
                  return -ret;
              return ret;
          }
  
          public double nextDouble() throws IOException {
              double ret = 0, div = 1;
              byte c = read();
              while (c <= ' ')
                  c = read();
              final boolean neg = (c == '-');
              if (neg)
                  c = read();
  
              do {
                  ret = ret * 10 + c - '0';
              } while ((c = read()) >= '0' && c <= '9');
  
              if (c == '.') {
                  while ((c = read()) >= '0' && c <= '9') {
                      ret += (c - '0') / (div *= 10);
                  }
              }
  
              if (neg)
                  return -ret;
              return ret;
          }
  
          private void fillBuffer() throws IOException {
              bytesRead = din.read(buffer, bufferPointer = 0, BUFFER_SIZE);
              if (bytesRead == -1)
                  buffer[0] = -1;
          }
  
          private byte read() throws IOException {
              if (bufferPointer == bytesRead)
                  fillBuffer();
              return buffer[bufferPointer++];
          }
  
          public void close() throws IOException {
              if (din == null)
                  return;
              din.close();
          }
      }
  
      // static {
      // if (thread)
      // new Thread(null, new Runnable() {
      // @Override
      // public void run() {
      // try {
      // final int testCases = HAS_TEST_CASES ? ni() : 1;
      // for (int i = 1; i <= testCases; i++) {
      // // out.print("Case #" + (i + 1) + ": ");
      // try {
      // solve();
      // } catch (final ArrayIndexOutOfBoundsException e) {
      // e.printStackTrace(System.err);
      // System.exit(-1);
      // } catch (final Exception e) {
      // pni("idk Exception in solve");
      // e.printStackTrace(System.err);
      // System.exit(-1);
      // }
      // }
      // out.flush();
      // } catch (final Throwable t) {
      // t.printStackTrace(System.err);
      // System.exit(-1);
      // }
      // }
      // }, "rec", (1L << 28)).start();
      // }
  
      @SuppressWarnings({ "all", })
      private static <T> T deepCopy(final T old) {
          try {
              return (T) deepCopyObject(old);
          } catch (final IOException | ClassNotFoundException e) {
              e.printStackTrace(System.err);
              System.exit(-1);
          }
          return null;
      }
  
      private static Object deepCopyObject(final Object oldObj) throws IOException, ClassNotFoundException {
          ObjectOutputStream oos = null;
          ObjectInputStream ois = null;
          try {
              final ByteArrayOutputStream bos = new ByteArrayOutputStream(); // A
              oos = new ObjectOutputStream(bos); // B
              // serialize and pass the object
              oos.writeObject(oldObj); // C
              oos.flush(); // D
              final ByteArrayInputStream bin = new ByteArrayInputStream(bos.toByteArray()); // E
              ois = new ObjectInputStream(bin); // F
              // return the new object
              return ois.readObject(); // G
          } catch (final ClassNotFoundException e) {
              pni("Exception while Object Cloning = " + e);
              throw (e);
          } finally {
              oos.close();
              ois.close();
          }
      }
  
  }