diff --git a/io/debug.h b/io/debug.h
index 9641c2f..358e8d7 100644
--- a/io/debug.h
+++ b/io/debug.h
@@ -3,19 +3,25 @@
 #include <iostream>
 #include <string>
 
-struct X {
-#ifdef LOG_DEBUG
-    X() { if(false) std::cout.setstate(std::ios_base::failbit); }
-    ~X() { if(false) { std::cout.clear(); } else { std::cout << std::endl << std::flush; } }
-#else
-    X() { std::cout.setstate(std::ios_base::failbit); }
-    ~X() { std::cout.clear(); }
-#endif
+struct print {
+    print() { if(false) std::cout.setstate(std::ios_base::failbit); }
+    ~print() { if(false) { std::cout.clear(); } else { std::cout << std::endl << std::flush; } }
+};
+
+struct noprint {
+    noprint() { if(true) std::cout.setstate(std::ios_base::failbit); }
+    ~noprint() { if(true) { std::cout.clear(); } else { std::cout << std::endl << std::flush; } }
 };
 
 
-#define DEBUG (X(), std::cout << "DEBUG[" << __FILENAME__ << ":" << __LINE__ << " in " << __func__ << "()]: ")
-#define WARN  (X(), std::cout << "WARN [" << __FILENAME__ << ":" << __LINE__ << " in " << __func__ << "()]: ")
+
+#ifdef LOG_DEBUG
+  #define DEBUG (print(), std::cout << "DEBUG[" << __FILENAME__ << ":" << __LINE__ << " in " << __func__ << "()]: ")
+  #define WARN  (print(), std::cout << "WARN [" << __FILENAME__ << ":" << __LINE__ << " in " << __func__ << "()]: ")
+#else
+  #define DEBUG (noprint(), std::cout << "")
+  #define WARN  (noprint(), std::cout << "")
+#endif
 
 #ifdef LOG_DEBUG
 #define STEP \