Calculate point to point duration

Change-Id: I4e0cabdbc628658619b7a71dc66aa3bf8a5030b2
diff --git a/native/jni/src/defines.h b/native/jni/src/defines.h
index bbef732..894e5f1 100644
--- a/native/jni/src/defines.h
+++ b/native/jni/src/defines.h
@@ -210,6 +210,7 @@
 #define DEBUG_WORDS_PRIORITY_QUEUE false
 #define DEBUG_SAMPLING_POINTS true
 #define DEBUG_POINTS_PROBABILITY true
+#define DEBUG_DOUBLE_LETTER true
 
 #ifdef FLAG_FULL_DBG
 #define DEBUG_GEO_FULL true
@@ -232,6 +233,7 @@
 #define DEBUG_WORDS_PRIORITY_QUEUE false
 #define DEBUG_SAMPLING_POINTS false
 #define DEBUG_POINTS_PROBABILITY false
+#define DEBUG_DOUBLE_LETTER false
 
 #define DEBUG_GEO_FULL false