diff --git a/bang b/bang
new file mode 100644
index 0000000..906cec4
--- /dev/null
+++ b/bang
@@ -0,0 +1,4 @@
+int bang (int x){
+	printf("%d", (((((~x) + 1) >> 31) & 1) | ((x >> 31) & 1)) ^ 1);
+	return 2;
+}