diff --git a/README.md b/README.md
index 573878c39fafdb1111763b22c1fb4c6c4885e40c..621145dfaed3feda05d9e0436b621c9341bc7474 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 Usage:
 
-gcc *.c -O0 -lm -g -o main -Wall;
+gcc *.c -O0 -lm -g -o main -Wall
 
 ./main
diff --git a/main b/main
index f2575dc283c9b9a9f662703d121d36e87cd618c4..80826d355e39a597023ec6b3ed5e0763f2b0d159 100755
Binary files a/main and b/main differ
diff --git a/solver.c b/solver.c
index e3b489335917804aa5d27fadc16f6c32001408e6..9e3d2827a2f01c827f2085b08c24965b175b05e7 100644
--- a/solver.c
+++ b/solver.c
@@ -1,5 +1,5 @@
 /* solver.c */
-/* Last Change: 2019/07/25 (Thu) 14:03:43. */
+/* Last Change: 2019/07/25 (Thu) 14:15:35. */
 
 #include<stdio.h>
 #include<limits.h>
@@ -9,7 +9,7 @@
 #include"io.h"
 /* #include<string.h> */
 /* #include<math.h> */
-#define DEBUG 1
+#define DEBUG 0
 #define ABS(a) ((a) < 0 ? - (a) : (a))
 #define MAX(a, b) ((a) > (b) ? (a) : (b))
 
@@ -392,7 +392,8 @@ short int try_wires(short int blockid){
 						found++;
 			if(found==2){
 				line[lines]=block_data[blockid][i][2];
-				printf("#%d   Block %d requires line %d\n",attempts,blockid,block_data[blockid][i][2]);
+				if(DEBUG)
+					printf("#%d   Block %d requires line %d\n",attempts,blockid,block_data[blockid][i][2]);
 				lines++;
 			}
 		}