diff --git a/main b/main
index 80826d355e39a597023ec6b3ed5e0763f2b0d159..be6f3afb94aae43b3f4b1e70da19fc5638e8c72a 100755
Binary files a/main and b/main differ
diff --git a/solver.c b/solver.c
index 9e3d2827a2f01c827f2085b08c24965b175b05e7..7ce3133df9c5efc6320f6bc780c3d4ffd8b24e2c 100644
--- a/solver.c
+++ b/solver.c
@@ -1,5 +1,5 @@
 /* solver.c */
-/* Last Change: 2019/07/25 (Thu) 14:15:35. */
+/* Last Change: 2019/07/25 (Thu) 14:39:28. */
 
 #include<stdio.h>
 #include<limits.h>
@@ -9,7 +9,7 @@
 #include"io.h"
 /* #include<string.h> */
 /* #include<math.h> */
-#define DEBUG 0
+#define DEBUG 1
 #define ABS(a) ((a) < 0 ? - (a) : (a))
 #define MAX(a, b) ((a) > (b) ? (a) : (b))
 
@@ -341,7 +341,7 @@ short int available(short int nowx,short int nowy, short int start){ //return 1
 				break;
 		}
 	if(avail[nowy][nowx]==2)
-		avail[nowy][nowx]=1;
+		avail[nowy][nowx]=0;
 	return 0;
 }