#include <bits/stdc++.h>
using namespace std;
const int MAXN = 2e5 + 5;
int n, m;
map <int, int> pos;
vector <int> arr, brr, tree;
void update(int node, int l, int r, int i, int v) {
if(l == r) {
tree[node] = v;
return;
}
int md = l + r >> 1;
if(i <= md) update(node * 2, l, md, i, v);
else update(node * 2 + 1, md + 1, r, i, v);
tree[node] = max(tree[node * 2], tree[node * 2 + 1]);
}
int query(int node, int l, int r, int L, int R) {
if(r < L || l > R) return 0;
if(L <= l && r <= R) return tree[node];
int md = l + r >> 1;
return max(query(node * 2, l, md, L, R), query(node * 2 + 1, md + 1, r, L, R));
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
cin >> n >> m;
tree.resize(4 * n);
arr.resize(n); brr.resize(n);
for(int i = 0; i < n; i++) cin >> arr[i];
brr = arr;
sort(brr.begin(), brr.end());
brr.erase(unique(brr.begin(), brr.end()), brr.end());
pos[0] = -1;
for(int i = 0; i < brr.size(); i++) pos[brr[i]] = i;
int ans = n;
for(int i = n - 1; i >= 0; i--) {
int ii = upper_bound(brr.begin(), brr.end(), arr[i] + m) - brr.begin();
int v = 0;
if(ii) {
v = query(1, 0, n - 1, 0, pos[brr[ii - 1]]) + 1;
update(1, 0, n - 1, pos[arr[i]], v);
}
if(arr[i] <= m * (i + 1)) ans = min(ans, n - v);
}
cout << ans << "\n";
return 0;
}
Compilation message
triusis.cpp: In function 'void update(int, int, int, int, int)':
triusis.cpp:13:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
13 | int md = l + r >> 1;
| ~~^~~
triusis.cpp: In function 'int query(int, int, int, int, int)':
triusis.cpp:22:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
22 | int md = l + r >> 1;
| ~~^~~
triusis.cpp: In function 'int main()':
triusis.cpp:40:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
40 | for(int i = 0; i < brr.size(); i++) pos[brr[i]] = i;
| ~~^~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
344 KB |
Output is correct |
| 11 |
Correct |
0 ms |
344 KB |
Output is correct |
| 12 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 13 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
344 KB |
Output is correct |
| 11 |
Correct |
0 ms |
344 KB |
Output is correct |
| 12 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 13 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
344 KB |
Output is correct |
| 11 |
Correct |
0 ms |
344 KB |
Output is correct |
| 12 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 13 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
344 KB |
Output is correct |
| 11 |
Correct |
0 ms |
344 KB |
Output is correct |
| 12 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 13 |
Halted |
0 ms |
0 KB |
- |
