diff options
| author | Gloria Mundi <gloria@gloria-mundi.eu> | 2024-03-10 20:48:51 +0100 |
|---|---|---|
| committer | Gloria Mundi <gloria@gloria-mundi.eu> | 2024-03-10 20:48:51 +0100 |
| commit | cd870938f6cf266292e0e5cecb2d96d604b2ad9d (patch) | |
| tree | a1615ad3cac2c505c33e9952fc72cced5931d6c9 /datastructures/test/fenwickTree.cpp | |
| parent | 0cebc901e79c21168601071e29ed8e4f4b6f9505 (diff) | |
make Fenwick Tree prefix sum exclusive
Diffstat (limited to 'datastructures/test/fenwickTree.cpp')
| -rw-r--r-- | datastructures/test/fenwickTree.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/datastructures/test/fenwickTree.cpp b/datastructures/test/fenwickTree.cpp index 4bc812a..f9dd619 100644 --- a/datastructures/test/fenwickTree.cpp +++ b/datastructures/test/fenwickTree.cpp @@ -10,10 +10,10 @@ void test(int n) { update(p, delta); naive[p] += delta; - int r = util::randint(n+1) - 1; + int r = util::randint(n+1); ll naive_result = 0; - for (int i = 0; i <= r; i++) naive_result += naive[i]; + for (int i = 0; i < r; i++) naive_result += naive[i]; ll fenwick_result = prefix_sum(r); assert(naive_result == fenwick_result); } |