Task: | Dynamic Range Minimum Queries |
Sender: | Nallue |
Submission time: | 2024-09-22 19:57:50 +0300 |
Language: | C++ (C++11) |
Status: | READY |
Result: | ACCEPTED |
test | verdict | time | |
---|---|---|---|
#1 | ACCEPTED | 0.00 s | details |
#2 | ACCEPTED | 0.45 s | details |
Code
#include <iostream> #include <vector> #include <climits> using namespace std; class SegmentTreeSum { vector<int> tree; int n; public: SegmentTreeSum(const vector<int>& array) { n = array.size(); tree.resize(2 * n); build(array); } void build(const vector<int>& array) { for (int i = 0; i < n; i++) tree[n + i] = array[i]; for (int i = n - 1; i > 0; --i) tree[i] = tree[2 * i] + tree[2 * i + 1]; } int rangeSum(int l, int r) { int sum = 0; l += n; r += n; while (l < r) { if (l & 1) sum += tree[l++]; if (r & 1) sum += tree[--r]; l >>= 1; r >>= 1; } return sum; } void update(int idx, int value) { idx += n; tree[idx] = value; for (idx >>= 1; idx > 0; idx >>= 1) { tree[idx] = tree[2 * idx] + tree[2 * idx + 1]; } } }; class SegmentTreeMin { vector<int> tree; int n; public: SegmentTreeMin(const vector<int>& array) { n = array.size(); tree.resize(2 * n); build(array); } void build(const vector<int>& array) { for (int i = 0; i < n; i++) tree[n + i] = array[i]; for (int i = n - 1; i > 0; --i) tree[i] = min(tree[2 * i], tree[2 * i + 1]); } int rangeMin(int l, int r) { int minVal = INT_MAX; l += n; r += n; while (l < r) { if (l & 1) minVal = min(minVal, tree[l++]); if (r & 1) minVal = min(minVal, tree[--r]); l >>= 1; r >>= 1; } return minVal; } void update(int idx, int value) { idx += n; tree[idx] = value; for (idx >>= 1; idx > 0; idx >>= 1) { tree[idx] = min(tree[2 * idx], tree[2 * idx + 1]); } } }; class SegmentTreeMax { vector<int> tree; int n; public: SegmentTreeMax(const vector<int>& array) { n = array.size(); tree.resize(2 * n); build(array); } void build(const vector<int>& array) { for (int i = 0; i < n; i++) tree[n + i] = array[i]; for (int i = n - 1; i > 0; --i) tree[i] = max(tree[2 * i], tree[2 * i + 1]); } int rangeMax(int l, int r) { int maxVal = INT_MIN; l += n; r += n; while (l < r) { if (l & 1) maxVal = max(maxVal, tree[l++]); if (r & 1) maxVal = max(maxVal, tree[--r]); l >>= 1; r >>= 1; } return maxVal; } void update(int idx, int value) { idx += n; tree[idx] = value; for (idx >>= 1; idx > 0; idx >>= 1) { tree[idx] = max(tree[2 * idx], tree[2 * idx + 1]); } } }; int main(){ int n,q; cin>>n>>q; vector<int> v(n); for(int i=0; i<n; i++) cin>>v[i]; SegmentTreeMin STs(v); for(int i=0; i<q; i++){ int type,a,b; cin >> type >> a >> b; if(type==1){ STs.update(a-1,b); } else cout << STs.rangeMin(a-1,b) << endl; } }
Test details
Test 1
Verdict: ACCEPTED
input |
---|
8 80 7 6 4 6 2 9 4 8 2 1 1 2 1 2 2 1 3 ... |
correct output |
---|
7 6 4 4 2 ... |
user output |
---|
7 6 4 4 2 ... Truncated |
Test 2
Verdict: ACCEPTED
input |
---|
200000 200000 398739055 65343131 699208332 3... |
correct output |
---|
28609 129890 20378 20378 311522 ... |
user output |
---|
28609 129890 20378 20378 311522 ... Truncated |