1 files changed, 33 insertions, 0 deletions
diff --git a/test.h b/test.h
new file mode 100644
index 0000000..ce2689f
--- /dev/null
+++ b/test.h
@@ -0,0 +1,33 @@
+#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
+
+namespace util {
+
+mt19937 rd(0);
+
+int randint(int l, int r) {
+	assert(l <= r);
+	return uniform_int_distribution<int>(l, r)(rd);
+}
+
+int randint(int x) {
+	assert(x > 0);
+	return randint(0, x-1);
+}
+
+int randint() {
+	return randint(-1'000'000, +1'000'000);
+}
+
+}