remove sz() from Fenwick trees

1 files changed, 3 insertions, 3 deletions

diff --git a/datastructures/fenwickTree.cpp b/datastructures/fenwickTree.cpp
index 6c5ed91..8c73b78 100644
--- a/datastructures/fenwickTree.cpp
+++ b/datastructures/fenwickTree.cpp
@@ -1,15 +1,15 @@
 vector<ll> tree;
 
 void update(int i, ll val) {
-	for (i++; i < sz(tree); i += (i & (-i))) tree[i] += val;
+	for (i++; i < ssize(tree); i += i & -i) tree[i] += val;
 }
 
 void init(int n) {
-	tree.assign(n + 1,0);
+	tree.assign(n + 1, 0);
 }
 
 ll prefix_sum(int i) {
 	ll sum = 0;
-	for (; i > 0; i -= (i & (-i))) sum += tree[i];
+	for (; i > 0; i -= i & -i) sum += tree[i];
 	return sum;
 }