1 files changed, 13 insertions, 0 deletions
diff --git a/test.h b/test.h
new file mode 100644
index 0000000..cca2243
--- /dev/null
+++ b/test.h
@@ -0,0 +1,13 @@
+#include <bits/stdc++.h>
+using namespace std;
+using ll = long long;
+#define sz(x) ((int)(x).size())
+#define all(x) (x).begin(), (x).end()
+
+template<typename T>
+T _lg_check(T n) {
+	assert(n > 0);
+	return __lg(n);
+}
+
+#define __lg _lg_check