diff --git a/cs677/hw7/src/Makefile b/cs677/hw7/src/Makefile
index acfb729..bd5a190 100644
--- a/cs677/hw7/src/Makefile
+++ b/cs677/hw7/src/Makefile
@@ -4,6 +4,7 @@ TARGETS += floyd-sequential
 TARGETS += floyd-parallel
 
 CXXFLAGS := -fopenmp
+#CXXFLAGS += -DPRINT_RESULT
 
 OBJS := $(foreach target,$(TARGETS),$(target).o)
 
diff --git a/cs677/hw7/src/floyd-parallel.cc b/cs677/hw7/src/floyd-parallel.cc
index de777eb..1b169ca 100644
--- a/cs677/hw7/src/floyd-parallel.cc
+++ b/cs677/hw7/src/floyd-parallel.cc
@@ -64,6 +64,8 @@ int main(int argc, char * argv[])
     }
 
     gettimeofday(&after, NULL);         /* Stop timing */
+
+#ifdef PRINT_RESULT
     cout << "Result:" << endl;
     /* Print out the final matrix */
     for (int i = 0; i < num_verts; i++)
@@ -77,6 +79,7 @@ int main(int argc, char * argv[])
         }
         printf("\n");
     }
+#endif
 
     double time_before = before.tv_sec + before.tv_usec / 1000000.0;
     double time_after = after.tv_sec + after.tv_usec / 1000000.0;
diff --git a/cs677/hw7/src/floyd-sequential.cc b/cs677/hw7/src/floyd-sequential.cc
index f1effab..4bc862f 100644
--- a/cs677/hw7/src/floyd-sequential.cc
+++ b/cs677/hw7/src/floyd-sequential.cc
@@ -63,6 +63,8 @@ int main(int argc, char * argv[])
     }
 
     gettimeofday(&after, NULL);         /* Stop timing */
+
+#ifdef PRINT_RESULT
     cout << "Result:" << endl;
     /* Print out the final matrix */
     for (int i = 0; i < num_verts; i++)
@@ -76,6 +78,7 @@ int main(int argc, char * argv[])
         }
         printf("\n");
     }
+#endif
 
     double time_before = before.tv_sec + before.tv_usec / 1000000.0;
     double time_after = after.tv_sec + after.tv_usec / 1000000.0;