#include "sequence.h"
#include <vector>
using namespace std;
#define vi vector<int>
const int siz = 5e5 + 1;
vi his[siz];
#define pi pair<int,int>
#define x first
#define y second
struct node {
int l, r, mid, minl, minr, maxl, maxr,sum1,sum2;
node* sl, * sr;
node(int li, int ri) {
l = li, r = ri, mid = (l + r) / 2, minl = -(r - l + 1), minr = -(r - l + 1), maxl = 0, maxr = 0,sum1=minr,sum2=minr;
if (l < r) {
sl = new node(l, mid);
sr = new node(mid + 1, r);
}
}
void update(int i, int p) {
if (l == r) {
sum2 = 1,maxl=1,maxr=1;
if (p == 2) {
sum1 = 1, minl = 0, minr = 0;
}
}
else {
if (i <= mid)sl->update(i, p);
else sr->update(i, p);
sum1 = sl->sum1 + sr->sum1;
sum2 = sl->sum2 + sr->sum2;
minl = min(sl->minl, sl->sum1 + sr->minl);
minr = min(sr->minr, sr->sum1 + sl->minr);
maxl = max(sl->maxl, sl->sum2 + sr->maxl);
maxr = max(sr->maxr, sr->sum2 + sl->maxr);
}
}
int query1(int a, int b) {
if (a>r || b <l)return 0;
if (a <= l && b >= r)return sum1;
if (b <= mid)return min(sl->query1(a, b), sl->query1(a, mid) + sr->minl);
if (a > mid)return min(sr->query1(a, b), sr->query1(mid + 1, b) + sl->minr);
return sl->query1(a, mid) + sr->query1(mid+1, b);
}
int query2(int a, int b) {
if (a > r || b < l)return 0;
if (a <= l && b >= r)return sum2;
if (b <= mid)return max(sl->query2(a, b), sl->query2(a, mid) + sr->maxl);
if (a > mid)return max(sr->query2(a, b), sr->query2(mid + 1, b) + sl->maxr);
return sl->query2(a, mid) + sr->query2(mid+1, b);
}
};
int sequence(int N, std::vector<int> A) {
for (int i = 0; i < N; i++)his[A[i]].push_back(i);
int ans = 1;
node* seg = new node(0, N-1);
for (int i = 0; i <= N; i++) {
if (his[i].empty())continue;
int it1 = 0, it2 = 0;
for (int a : his[i])seg->update(a, 1);
while (it2+1 < his[i].size()) {
pi p = { seg->query1(his[i][it1], his[i][it2 + 1]),seg->query2(his[i][it1],his[i][it2 + 1]) };
if (p.x> 0 || p.y< 0) {
it1++;
}
else {
it2++;
}
if (it1 > it2)it2++;
ans = max(ans, it2 - it1 + 1);
}
for (int a : his[i])seg->update(a, 2);
}
return ans;
}
Compilation message
sequence.cpp: In function 'int sequence(int, std::vector<int>)':
sequence.cpp:64:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
64 | while (it2+1 < his[i].size()) {
| ~~~~~~^~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12124 KB |
Output is correct |
2 |
Correct |
3 ms |
12124 KB |
Output is correct |
3 |
Correct |
3 ms |
12124 KB |
Output is correct |
4 |
Correct |
3 ms |
12124 KB |
Output is correct |
5 |
Correct |
3 ms |
12124 KB |
Output is correct |
6 |
Correct |
3 ms |
12156 KB |
Output is correct |
7 |
Correct |
4 ms |
12124 KB |
Output is correct |
8 |
Correct |
4 ms |
12124 KB |
Output is correct |
9 |
Correct |
4 ms |
12124 KB |
Output is correct |
10 |
Correct |
4 ms |
12124 KB |
Output is correct |
11 |
Correct |
3 ms |
12124 KB |
Output is correct |
12 |
Correct |
3 ms |
12124 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12124 KB |
Output is correct |
2 |
Correct |
3 ms |
12124 KB |
Output is correct |
3 |
Correct |
3 ms |
12124 KB |
Output is correct |
4 |
Correct |
3 ms |
12124 KB |
Output is correct |
5 |
Correct |
3 ms |
12124 KB |
Output is correct |
6 |
Correct |
3 ms |
12156 KB |
Output is correct |
7 |
Correct |
4 ms |
12124 KB |
Output is correct |
8 |
Correct |
4 ms |
12124 KB |
Output is correct |
9 |
Correct |
4 ms |
12124 KB |
Output is correct |
10 |
Correct |
4 ms |
12124 KB |
Output is correct |
11 |
Correct |
3 ms |
12124 KB |
Output is correct |
12 |
Correct |
3 ms |
12124 KB |
Output is correct |
13 |
Correct |
4 ms |
12380 KB |
Output is correct |
14 |
Correct |
4 ms |
12380 KB |
Output is correct |
15 |
Correct |
6 ms |
12428 KB |
Output is correct |
16 |
Correct |
6 ms |
12380 KB |
Output is correct |
17 |
Correct |
6 ms |
12424 KB |
Output is correct |
18 |
Correct |
4 ms |
12380 KB |
Output is correct |
19 |
Correct |
4 ms |
12380 KB |
Output is correct |
20 |
Correct |
4 ms |
12380 KB |
Output is correct |
21 |
Correct |
5 ms |
12380 KB |
Output is correct |
22 |
Correct |
5 ms |
12380 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12124 KB |
Output is correct |
2 |
Correct |
787 ms |
88624 KB |
Output is correct |
3 |
Correct |
690 ms |
92112 KB |
Output is correct |
4 |
Correct |
774 ms |
81624 KB |
Output is correct |
5 |
Correct |
775 ms |
90964 KB |
Output is correct |
6 |
Correct |
882 ms |
90904 KB |
Output is correct |
7 |
Correct |
861 ms |
82436 KB |
Output is correct |
8 |
Correct |
1012 ms |
82768 KB |
Output is correct |
9 |
Correct |
657 ms |
81772 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12124 KB |
Output is correct |
2 |
Correct |
1459 ms |
80668 KB |
Output is correct |
3 |
Execution timed out |
2015 ms |
81656 KB |
Time limit exceeded |
4 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
447 ms |
94344 KB |
Output is correct |
2 |
Correct |
435 ms |
94220 KB |
Output is correct |
3 |
Correct |
473 ms |
93772 KB |
Output is correct |
4 |
Correct |
438 ms |
97052 KB |
Output is correct |
5 |
Correct |
403 ms |
93636 KB |
Output is correct |
6 |
Correct |
401 ms |
93648 KB |
Output is correct |
7 |
Correct |
320 ms |
92572 KB |
Output is correct |
8 |
Correct |
338 ms |
92156 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12124 KB |
Output is correct |
2 |
Correct |
3 ms |
12124 KB |
Output is correct |
3 |
Correct |
3 ms |
12124 KB |
Output is correct |
4 |
Correct |
3 ms |
12124 KB |
Output is correct |
5 |
Correct |
3 ms |
12124 KB |
Output is correct |
6 |
Correct |
3 ms |
12156 KB |
Output is correct |
7 |
Correct |
4 ms |
12124 KB |
Output is correct |
8 |
Correct |
4 ms |
12124 KB |
Output is correct |
9 |
Correct |
4 ms |
12124 KB |
Output is correct |
10 |
Correct |
4 ms |
12124 KB |
Output is correct |
11 |
Correct |
3 ms |
12124 KB |
Output is correct |
12 |
Correct |
3 ms |
12124 KB |
Output is correct |
13 |
Correct |
4 ms |
12380 KB |
Output is correct |
14 |
Correct |
4 ms |
12380 KB |
Output is correct |
15 |
Correct |
6 ms |
12428 KB |
Output is correct |
16 |
Correct |
6 ms |
12380 KB |
Output is correct |
17 |
Correct |
6 ms |
12424 KB |
Output is correct |
18 |
Correct |
4 ms |
12380 KB |
Output is correct |
19 |
Correct |
4 ms |
12380 KB |
Output is correct |
20 |
Correct |
4 ms |
12380 KB |
Output is correct |
21 |
Correct |
5 ms |
12380 KB |
Output is correct |
22 |
Correct |
5 ms |
12380 KB |
Output is correct |
23 |
Correct |
93 ms |
24852 KB |
Output is correct |
24 |
Correct |
93 ms |
24852 KB |
Output is correct |
25 |
Correct |
99 ms |
24852 KB |
Output is correct |
26 |
Correct |
240 ms |
23892 KB |
Output is correct |
27 |
Correct |
250 ms |
23668 KB |
Output is correct |
28 |
Correct |
242 ms |
23888 KB |
Output is correct |
29 |
Correct |
294 ms |
23372 KB |
Output is correct |
30 |
Correct |
293 ms |
23132 KB |
Output is correct |
31 |
Correct |
53 ms |
23504 KB |
Output is correct |
32 |
Correct |
41 ms |
25624 KB |
Output is correct |
33 |
Correct |
92 ms |
24668 KB |
Output is correct |
34 |
Correct |
98 ms |
24676 KB |
Output is correct |
35 |
Correct |
88 ms |
24624 KB |
Output is correct |
36 |
Correct |
159 ms |
24656 KB |
Output is correct |
37 |
Correct |
120 ms |
24668 KB |
Output is correct |
38 |
Correct |
125 ms |
24684 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12124 KB |
Output is correct |
2 |
Correct |
3 ms |
12124 KB |
Output is correct |
3 |
Correct |
3 ms |
12124 KB |
Output is correct |
4 |
Correct |
3 ms |
12124 KB |
Output is correct |
5 |
Correct |
3 ms |
12124 KB |
Output is correct |
6 |
Correct |
3 ms |
12156 KB |
Output is correct |
7 |
Correct |
4 ms |
12124 KB |
Output is correct |
8 |
Correct |
4 ms |
12124 KB |
Output is correct |
9 |
Correct |
4 ms |
12124 KB |
Output is correct |
10 |
Correct |
4 ms |
12124 KB |
Output is correct |
11 |
Correct |
3 ms |
12124 KB |
Output is correct |
12 |
Correct |
3 ms |
12124 KB |
Output is correct |
13 |
Correct |
4 ms |
12380 KB |
Output is correct |
14 |
Correct |
4 ms |
12380 KB |
Output is correct |
15 |
Correct |
6 ms |
12428 KB |
Output is correct |
16 |
Correct |
6 ms |
12380 KB |
Output is correct |
17 |
Correct |
6 ms |
12424 KB |
Output is correct |
18 |
Correct |
4 ms |
12380 KB |
Output is correct |
19 |
Correct |
4 ms |
12380 KB |
Output is correct |
20 |
Correct |
4 ms |
12380 KB |
Output is correct |
21 |
Correct |
5 ms |
12380 KB |
Output is correct |
22 |
Correct |
5 ms |
12380 KB |
Output is correct |
23 |
Correct |
787 ms |
88624 KB |
Output is correct |
24 |
Correct |
690 ms |
92112 KB |
Output is correct |
25 |
Correct |
774 ms |
81624 KB |
Output is correct |
26 |
Correct |
775 ms |
90964 KB |
Output is correct |
27 |
Correct |
882 ms |
90904 KB |
Output is correct |
28 |
Correct |
861 ms |
82436 KB |
Output is correct |
29 |
Correct |
1012 ms |
82768 KB |
Output is correct |
30 |
Correct |
657 ms |
81772 KB |
Output is correct |
31 |
Correct |
1459 ms |
80668 KB |
Output is correct |
32 |
Execution timed out |
2015 ms |
81656 KB |
Time limit exceeded |
33 |
Halted |
0 ms |
0 KB |
- |