Updated libaries

1 files changed, 5 insertions, 5 deletions

diff --git a/Data Structures/fenwick_tree.cpp b/Data Structures/fenwick_tree.cpp
index e36e798..4bd7354 100644
--- a/Data Structures/fenwick_tree.cpp
+++ b/Data Structures/fenwick_tree.cpp
@@ -1,8 +1,8 @@
-class fenwick_tree {
-private: vector<int> FT;
+template<typename T> class fenwick_tree {
+private: vector<T> FT;
 public:
 	fenwick_tree(int N) { FT.assign(N + 1, 0); }
-	void update(int x, int val) { for (; x < FT.size(); x += x & -x) FT[x] += val; }
-	int query(int x) { int ret = 0; if (x > 0) for (; x > 0; x -= x & -x) ret += FT[x]; return ret; }
-	int query(int x, int y) { return query(y) - (x == 1 ? 0 : query(x - 1)); }
+	void update(int x, T val) { if (x > 0) for (; x < FT.size(); x += x & -x) FT[x] += val; }
+	T query(int x) { T ret = 0; if (x > 0) for (; x > 0; x -= x & -x) ret += FT[x]; return ret; }
+	T query(int x, int y) { return query(y) - (x == 1 ? 0 : query(x - 1)); }
 };
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