diff options
| author | Anthony Wang | 2020-09-21 12:39:40 -0500 |
|---|---|---|
| committer | Anthony Wang | 2020-09-21 12:39:40 -0500 |
| commit | 9eff1f7eea32d397c05509ad7fc45297c33866c1 (patch) | |
| tree | 209f697571e6f11dd860779c5713643a09e413f9 /Data Structures | |
| parent | 38b999de0298946fecd9f8e1539f99c22190d052 (diff) | |
Cleanup
Diffstat (limited to 'Data Structures')
| -rw-r--r-- | Data Structures/segment_tree.cpp | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/Data Structures/segment_tree.cpp b/Data Structures/segment_tree.cpp index c0f317b..a52502f 100644 --- a/Data Structures/segment_tree.cpp +++ b/Data Structures/segment_tree.cpp @@ -6,8 +6,7 @@ template<typename T> struct seg_tree { if (l != r) tmp[n<<1] += tmp[n], tmp[n<<1|1] += tmp[n]; tmp[n] = 0; } - void build(T v, int l = 0, int r = -1, int n = 1) { - if (r == -1) r = N-1; + void build(T v, int l = 0, int r = MX, int n = 1) { if (l == r) seg[n] = v; else { int m = (l+r)>>1; @@ -15,8 +14,7 @@ template<typename T> struct seg_tree { seg[n] = pull(seg[n<<1], seg[n<<1|1]); } } - void update(int x, T v, int l = 0, int r = -1, int n = 1) { - if (r == -1) r = N-1; + void update(int x, T v, int l = 0, int r = MX, int n = 1) { if (l == r) seg[n] += v; else { int m = (l+r)>>1; @@ -24,8 +22,7 @@ template<typename T> struct seg_tree { seg[n] = pull(seg[n<<1], seg[n<<1|1]); } } - void update(int a, int b, T v, int l = 0, int r = -1, int n = 1) { - if (r == -1) r = N-1; + void update(int a, int b, T v, int l = 0, int r = MX, int n = 1) { push(l, r, n); if (l > r || l > b || r < a) return; if (l >= a && r <= b) { @@ -38,8 +35,7 @@ template<typename T> struct seg_tree { seg[n] = pull(seg[n<<1], seg[n<<1|1]); } } - T query(int a, int b, int l = 0, int r = -1, int n = 1) { - if (r == -1) r = N - 1; + T query(int a, int b, int l = 0, int r = MX, int n = 1) { if (a > b || l > b || r < a) return 0; push(l, r, n); if (l >= a && r <= b) return seg[n]; |