diff --git a/comm/client/main.py b/comm/client/main.py
index 92249f31b3c84871ed12e694a4a4edd8a7b0237e..1c1778c5348a4095778c5dbc84d53a701368d350 100644
--- a/comm/client/main.py
+++ b/comm/client/main.py
@@ -21,7 +21,6 @@ import adc2018solver as pynqrouter
 
 app = Flask(__name__)
 args = {}
-# pynq_thread = None
 client_baseurl = ""
 
 @app.route('/start', methods=["POST"])
@@ -43,9 +42,15 @@ def start():
         qstr = request.form["question"]
         qname = request.form["qname"]
         qseed = request.form["qseed"]
+        req_id = request.form["req_id"]
 	
         boardstr = BoardStr.conv_boardstr(qstr.split('\n'), 'random', int(qseed))
-        option = {"name": qname, "host": args['host'], "client": client_baseurl} 
+        option = {
+            "name": qname,
+            "host": args['host'],
+            "client": client_baseurl,
+            "req_id": req_id
+        } 
 
         pynqrouter.start_solver(boardstr, qseed, option)
         # pynq_thread = pynqrouter.start_solver(boardstr, qseed, option)
@@ -64,8 +69,6 @@ def start():
 @app.route('/stop')
 def stop():
 
-    # global pynq_thread
-
     if pynqrouter.solver_thread is None:
         ans = {"status": "No threads"}
     else:
@@ -73,15 +76,11 @@ def stop():
         pynqrouter.stop_solver()
         ans = {"status": "Stopped"}
 
-    # pynq_thread = None
-
     return json.dumps(ans)
 
 @app.route("/status")
 def status():
 
-    # global pynq_thread
-
     res_mes = ""
 
     if pynqrouter.solver_thread is None:
@@ -121,3 +120,4 @@ if __name__ == "__main__":
     if args["debug"]:
         app.debug = True
     app.run(host='0.0.0.0', port=args["port"], threaded=True)
+
diff --git a/solver/adc2018solver.py b/solver/adc2018solver.py
index b93f4619bf1ac7934bccc03729f82adbdc601fc2..53d5edd5770a3fbcdfb00dc2cc9de64fd669ea5a 100644
--- a/solver/adc2018solver.py
+++ b/solver/adc2018solver.py
@@ -154,11 +154,19 @@ def solve(boardstr, seed=12345, zero_padding=False, option=dict()):
         # 解けなかったらLEDを消す
         mmio_led.write(0, 0)
         sys.stderr.write('Cannot solve it!\n')
-        res = {'client': option['client'], 'qname': option['name'], 'answer': '', 'cputime': -1}
+        res = {
+            'client': option['client'],
+            'qname': option['name'],
+            'solution': '',
+            'cputime': -1.0,
+            'req_id': option['req_id'],
+            'solved': False
+        }
         if "host" in option:
             requests.post("http://{}/post".format(option['host']), data=res)
         solver_thread = None
-        return { 'solved': False, 'solution': '', 'elapsed': -1.0 }
+        return res
+    
     print('Solved!')
 
     # 解けたらLEDを全部つける
@@ -187,11 +195,20 @@ def solve(boardstr, seed=12345, zero_padding=False, option=dict()):
 
     if solver_thread is not None:
         solver_thread.stopped()
-    res = {'client': option['client'], 'qname': option['name'], 'answer': solution, 'cputime': elapsed}
+
+    res = {
+        'client': option['client'],
+        'qname': option['name'],
+        'solution': solution,
+        'cputime': elapsed,
+        'req_id': option['req_id'],
+        'solved': True
+    }
     if "host" in option:
         r = requests.post("http://{}/post".format(option['host']), data=res)
         solver_thread = None
-    return { 'solved': True, 'solution': solution, 'elapsed': elapsed }
+
+    return res
 
 def main():
     parser = argparse.ArgumentParser(description="Solver with pynqrouter")