#include <bits/stdc++.h>
#define int int64_t
using namespace std;
const int maxv = 2e9 + 10;
const int maxn = 2e5 + 10;
const int inf = 0x3f3f3f3f3f3f3f3fll;
int n, x;
int dp[maxn], dp2[maxn], v[maxn];
struct node{
int v;
node *l, *r;
node(int v=-inf): v(v), l(0), r(0) {}
};
void update(node* no, int p, int v, int ini=-maxv, int fim=maxv){
if(ini == fim){
no->v = v;
return;
}
int meio = (ini+fim)>>1;
if(p <= meio){
if(!no->l) no->l = new node;
update(no->l, p, v, ini, meio);
}else{
if(!no->r) no->r = new node;
update(no->r, p, v, meio+1, fim);
}
no->v = (no->l?no->l->v:-inf), (no->r?no->r->v:-inf);
}
int query(node* no, int l, int r, int ini=-maxv, int fim=maxv){
if(!no || ini > r || fim < l) return -inf;
else if(l <= ini && fim <= r) return no->v;
int meio = (ini+fim)>>1;
int p1 = (no->l?query(no->l, l, r, ini, meio):-inf);
int p2 = (no->r?query(no->r, l, r, meio+1, fim):-inf);
return max(p1, p2);
}
int32_t main() {
cin >> n >> x;
for(int i=1;i<=n;i++)
cin >> v[i];
dp[1] = 1, dp2[1] = 1;
node *n1 = new node, *n2 = new node;
for(int i=2;i<=n;i++){
dp[i] = dp2[i] = 1;
// dp[i] = 1 + query(n1, -maxv, v[i]-1);
// dp2[i] = 1 + max(query(n1, -maxv, v[i]-x-1), query(n2, -maxv, v[i]));
for(int j=1;j<i;j++){
if(v[j] - x >= v[i]) continue;
dp2[i] = max(dp2[i], 1 + dp[j]);
if(v[j] >= v[i]) continue;
dp[i] = max(dp[i], 1 + dp[j]);
dp2[i] = max(dp2[i], 1 + dp2[j]);
}
}
int ans=0;
for(int i=1;i<=n;i++)
ans = max(ans, dp2[i]);
cout << ans << "\n";
return 0;
}
Compilation message
glo.cpp: In function 'void update(node*, int64_t, int64_t, int64_t, int64_t)':
glo.cpp:31:47: warning: second operand of conditional expression has no effect [-Wunused-value]
no->v = (no->l?no->l->v:-inf), (no->r?no->r->v:-inf);
~~~~~~~^
glo.cpp:31:49: warning: third operand of conditional expression has no effect [-Wunused-value]
no->v = (no->l?no->l->v:-inf), (no->r?no->r->v:-inf);
^~~~
glo.cpp: In function 'int32_t main()':
glo.cpp:50:8: warning: unused variable 'n1' [-Wunused-variable]
node *n1 = new node, *n2 = new node;
^~
glo.cpp:50:24: warning: unused variable 'n2' [-Wunused-variable]
node *n1 = new node, *n2 = new node;
^~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
384 KB |
Output is correct |
2 |
Correct |
2 ms |
384 KB |
Output is correct |
3 |
Correct |
2 ms |
384 KB |
Output is correct |
4 |
Correct |
3 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
384 KB |
Output is correct |
6 |
Correct |
2 ms |
384 KB |
Output is correct |
7 |
Correct |
3 ms |
384 KB |
Output is correct |
8 |
Correct |
2 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
384 KB |
Output is correct |
10 |
Correct |
2 ms |
384 KB |
Output is correct |
11 |
Correct |
2 ms |
384 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
384 KB |
Output is correct |
2 |
Correct |
2 ms |
384 KB |
Output is correct |
3 |
Correct |
2 ms |
384 KB |
Output is correct |
4 |
Correct |
3 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
384 KB |
Output is correct |
6 |
Correct |
2 ms |
384 KB |
Output is correct |
7 |
Correct |
3 ms |
384 KB |
Output is correct |
8 |
Correct |
2 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
384 KB |
Output is correct |
10 |
Correct |
2 ms |
384 KB |
Output is correct |
11 |
Correct |
2 ms |
384 KB |
Output is correct |
12 |
Correct |
2 ms |
384 KB |
Output is correct |
13 |
Correct |
2 ms |
384 KB |
Output is correct |
14 |
Correct |
2 ms |
384 KB |
Output is correct |
15 |
Correct |
2 ms |
408 KB |
Output is correct |
16 |
Correct |
2 ms |
384 KB |
Output is correct |
17 |
Correct |
3 ms |
428 KB |
Output is correct |
18 |
Correct |
2 ms |
384 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
384 KB |
Output is correct |
2 |
Correct |
2 ms |
384 KB |
Output is correct |
3 |
Correct |
2 ms |
384 KB |
Output is correct |
4 |
Correct |
3 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
384 KB |
Output is correct |
6 |
Correct |
2 ms |
384 KB |
Output is correct |
7 |
Correct |
3 ms |
384 KB |
Output is correct |
8 |
Correct |
2 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
384 KB |
Output is correct |
10 |
Correct |
2 ms |
384 KB |
Output is correct |
11 |
Correct |
2 ms |
384 KB |
Output is correct |
12 |
Correct |
2 ms |
384 KB |
Output is correct |
13 |
Correct |
2 ms |
384 KB |
Output is correct |
14 |
Correct |
2 ms |
384 KB |
Output is correct |
15 |
Correct |
2 ms |
408 KB |
Output is correct |
16 |
Correct |
2 ms |
384 KB |
Output is correct |
17 |
Correct |
3 ms |
428 KB |
Output is correct |
18 |
Correct |
2 ms |
384 KB |
Output is correct |
19 |
Correct |
6 ms |
384 KB |
Output is correct |
20 |
Correct |
4 ms |
372 KB |
Output is correct |
21 |
Correct |
5 ms |
384 KB |
Output is correct |
22 |
Correct |
5 ms |
512 KB |
Output is correct |
23 |
Correct |
5 ms |
384 KB |
Output is correct |
24 |
Correct |
2 ms |
384 KB |
Output is correct |
25 |
Correct |
4 ms |
384 KB |
Output is correct |
26 |
Correct |
4 ms |
512 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
2023 ms |
2788 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
2037 ms |
1508 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
2036 ms |
1912 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
384 KB |
Output is correct |
2 |
Correct |
2 ms |
384 KB |
Output is correct |
3 |
Correct |
2 ms |
384 KB |
Output is correct |
4 |
Correct |
3 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
384 KB |
Output is correct |
6 |
Correct |
2 ms |
384 KB |
Output is correct |
7 |
Correct |
3 ms |
384 KB |
Output is correct |
8 |
Correct |
2 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
384 KB |
Output is correct |
10 |
Correct |
2 ms |
384 KB |
Output is correct |
11 |
Correct |
2 ms |
384 KB |
Output is correct |
12 |
Correct |
2 ms |
384 KB |
Output is correct |
13 |
Correct |
2 ms |
384 KB |
Output is correct |
14 |
Correct |
2 ms |
384 KB |
Output is correct |
15 |
Correct |
2 ms |
408 KB |
Output is correct |
16 |
Correct |
2 ms |
384 KB |
Output is correct |
17 |
Correct |
3 ms |
428 KB |
Output is correct |
18 |
Correct |
2 ms |
384 KB |
Output is correct |
19 |
Correct |
6 ms |
384 KB |
Output is correct |
20 |
Correct |
4 ms |
372 KB |
Output is correct |
21 |
Correct |
5 ms |
384 KB |
Output is correct |
22 |
Correct |
5 ms |
512 KB |
Output is correct |
23 |
Correct |
5 ms |
384 KB |
Output is correct |
24 |
Correct |
2 ms |
384 KB |
Output is correct |
25 |
Correct |
4 ms |
384 KB |
Output is correct |
26 |
Correct |
4 ms |
512 KB |
Output is correct |
27 |
Execution timed out |
2023 ms |
2788 KB |
Time limit exceeded |
28 |
Halted |
0 ms |
0 KB |
- |