#include <bits/stdc++.h>
using namespace std;
int n, k;
int a[1303207], cong[1303207];
int st[4 * 2 * 200005];
int dp[200005];
map<int, int> lab;
void ud(int id, int l, int r, int pos, int k){
if(l > pos || r < pos) return;
if(l == r){
st[id] = k;
return;
}
int mid = (l + r) >> 1;
ud(id * 2, l, mid, pos, k);
ud(id * 2 + 1, mid + 1, r, pos, k);
st[id] = max(st[id * 2], st[id * 2 + 1]);
}
int get(int id, int l, int r, int L, int R){
if(l > R || r < L) return 0;
if(L <= l && r <= R) return st[id];
int mid = (l + r) >> 1;
return max(get(id * 2, l, mid, L, R), get(id * 2 + 1, mid + 1, r, L, R));
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin >> n >> k;
for (int i = 1; i <= n; i++){
cin >> a[i];
lab[a[i]];
lab[a[i] + k];
}
int cnt = 0;
for (auto [x, y] : lab){
lab[x] = ++cnt;
}
for (int i = 1; i <= n; i++){
cong[i] = lab[a[i] + k];
a[i] = lab[a[i]];
}
int ans = 0;
for (int i = 1; i <= n; i++){
int tmp0 = get(1, 1, 2 * n, 1, a[i] - 1) + 1;
int tmp1 = get(1, 1, 2 * n, 1, cong[i] - 1) + 1;
if(a[i] > a[i - 1]) tmp1 = max(tmp1, dp[i - 1] + 1);
ans = max({ans, tmp0, tmp1});
dp[i] = tmp1;
ud(1, 1, 2 * n, a[i], tmp0);
dp[i] = tmp1;
}
cout << ans;
}
Compilation message
glo.cpp: In function 'int main()':
glo.cpp:63:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
63 | for (auto [x, y] : lab){
| ^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 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 |
348 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 |
344 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
460 KB |
Output is correct |
11 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 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 |
348 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 |
344 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
460 KB |
Output is correct |
11 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 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 |
348 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 |
344 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
460 KB |
Output is correct |
11 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
270 ms |
15968 KB |
Output is correct |
2 |
Correct |
271 ms |
16208 KB |
Output is correct |
3 |
Correct |
277 ms |
16036 KB |
Output is correct |
4 |
Correct |
292 ms |
16212 KB |
Output is correct |
5 |
Correct |
120 ms |
9552 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
63 ms |
7104 KB |
Output is correct |
2 |
Correct |
61 ms |
7248 KB |
Output is correct |
3 |
Correct |
63 ms |
7128 KB |
Output is correct |
4 |
Incorrect |
32 ms |
4192 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
142 ms |
12880 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 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 |
348 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 |
344 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
460 KB |
Output is correct |
11 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |