1 files changed, 8 insertions, 6 deletions
diff --git a/datastructures/stlTree.cpp b/datastructures/stlTree.cpp
index 6dde73a..29491c4 100644
--- a/datastructures/stlTree.cpp
+++ b/datastructures/stlTree.cpp
@@ -1,14 +1,16 @@
-#include <bits/stdc++.h>
 #include <ext/pb_ds/assoc_container.hpp>
 #include <ext/pb_ds/tree_policy.hpp>
 using namespace std; using namespace __gnu_pbds;
-typedef tree<int, null_type, less<int>, rb_tree_tag,
-		tree_order_statistics_node_update> Tree;
+template<typename T>
+using Tree = tree<T, null_type, less<T>, rb_tree_tag,
+									tree_order_statistics_node_update>;
 
 int main() {
-	Tree X;
-	for (int i = 1; i <= 16; i <<= 1) X.insert(i); // {1, 2, 4, 8, 16}
+	Tree<int> X;
+	// insert {1, 2, 4, 8, 16}
+	for (int i = 1; i <= 16; i *= 2) X.insert(i);
 	cout << *X.find_by_order(3) << endl; // => 8
-	cout << X.order_of_key(10) << endl; // => 4 = min i, mit X[i] >= 10
+	cout << X.order_of_key(10) << endl;
+	// => 4 = min i, mit X[i] >= 10
 	return 0;
 }