package chelper;

import io.InputReader;
import io.OutputWriter;
import misc.SimpleSavingChelperSolution;


public class TaskA extends SimpleSavingChelperSolution {

  public void solve(int testNumber, InputReader in, OutputWriter out) {
    wrapSolve(testNumber, in, out);
  }

  @Override
  public void solve(int testNumber) {
    int testCount = in.nextInt();

    for (int test = 0; test < testCount; test++) {
      int a = in.nextInt();
      int b = in.nextInt();
      int n = in.nextInt();

      while (true) {
        int m = (a + b + 1) / 2;

        out.println(m);
        out.flush();

        String resp = in.nextString();

        if (resp.equals("CORRECT")) {
          break;
        } else if (resp.equals("TOO_BIG")) {
          b = m - 1;
        } else if (resp.equals("TOO_SMALL")) {
          a = m + 1;
        } else {
          System.out.println("WTF");
        }
      }
    }
  }
}