#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) {
if (p == 2) {
sum1 = 1, minl = 0, minr = 0;
}
else {
sum2 = 1, maxl = 1, maxr = 1;
}
}
else {
if (i <= mid)sl->update(i, p);
else sr->update(i, p);
if (p == 2) {
sum1 = sl->sum1 + sr->sum1;
minl = min(sl->minl, sl->sum1 + sr->minl);
minr = min(sr->minr, sr->sum1 + sl->minr);
}
else {
sum2 = sl->sum2 + sr->sum2;
maxl = max(sl->maxl, sl->sum2 + sr->maxl);
maxr = max(sr->maxr, sr->sum2 + sl->maxr);
}
}
}
int query1(int a, int b) {
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 <= 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:70:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
70 | while (it2+1 < his[i].size()) {
| ~~~~~~^~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12120 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 |
12120 KB |
Output is correct |
6 |
Correct |
3 ms |
12124 KB |
Output is correct |
7 |
Correct |
3 ms |
12124 KB |
Output is correct |
8 |
Correct |
3 ms |
12120 KB |
Output is correct |
9 |
Correct |
3 ms |
12120 KB |
Output is correct |
10 |
Correct |
3 ms |
12148 KB |
Output is correct |
11 |
Correct |
3 ms |
12120 KB |
Output is correct |
12 |
Correct |
3 ms |
12124 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12120 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 |
12120 KB |
Output is correct |
6 |
Correct |
3 ms |
12124 KB |
Output is correct |
7 |
Correct |
3 ms |
12124 KB |
Output is correct |
8 |
Correct |
3 ms |
12120 KB |
Output is correct |
9 |
Correct |
3 ms |
12120 KB |
Output is correct |
10 |
Correct |
3 ms |
12148 KB |
Output is correct |
11 |
Correct |
3 ms |
12120 KB |
Output is correct |
12 |
Correct |
3 ms |
12124 KB |
Output is correct |
13 |
Correct |
4 ms |
12376 KB |
Output is correct |
14 |
Correct |
4 ms |
12380 KB |
Output is correct |
15 |
Correct |
6 ms |
12380 KB |
Output is correct |
16 |
Correct |
6 ms |
12380 KB |
Output is correct |
17 |
Correct |
5 ms |
12380 KB |
Output is correct |
18 |
Correct |
3 ms |
12380 KB |
Output is correct |
19 |
Correct |
4 ms |
12380 KB |
Output is correct |
20 |
Correct |
4 ms |
12376 KB |
Output is correct |
21 |
Correct |
4 ms |
12380 KB |
Output is correct |
22 |
Correct |
4 ms |
12376 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12120 KB |
Output is correct |
2 |
Correct |
677 ms |
88656 KB |
Output is correct |
3 |
Correct |
560 ms |
88616 KB |
Output is correct |
4 |
Correct |
635 ms |
80600 KB |
Output is correct |
5 |
Correct |
661 ms |
87672 KB |
Output is correct |
6 |
Correct |
759 ms |
87676 KB |
Output is correct |
7 |
Correct |
720 ms |
81052 KB |
Output is correct |
8 |
Correct |
829 ms |
81184 KB |
Output is correct |
9 |
Correct |
532 ms |
80684 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12124 KB |
Output is correct |
2 |
Correct |
1242 ms |
80676 KB |
Output is correct |
3 |
Correct |
1676 ms |
80672 KB |
Output is correct |
4 |
Correct |
1713 ms |
81644 KB |
Output is correct |
5 |
Correct |
1176 ms |
81664 KB |
Output is correct |
6 |
Correct |
622 ms |
81648 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
391 ms |
94344 KB |
Output is correct |
2 |
Correct |
399 ms |
94496 KB |
Output is correct |
3 |
Correct |
411 ms |
93560 KB |
Output is correct |
4 |
Correct |
409 ms |
93764 KB |
Output is correct |
5 |
Correct |
359 ms |
90600 KB |
Output is correct |
6 |
Correct |
363 ms |
90440 KB |
Output is correct |
7 |
Correct |
277 ms |
89172 KB |
Output is correct |
8 |
Correct |
290 ms |
89172 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12120 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 |
12120 KB |
Output is correct |
6 |
Correct |
3 ms |
12124 KB |
Output is correct |
7 |
Correct |
3 ms |
12124 KB |
Output is correct |
8 |
Correct |
3 ms |
12120 KB |
Output is correct |
9 |
Correct |
3 ms |
12120 KB |
Output is correct |
10 |
Correct |
3 ms |
12148 KB |
Output is correct |
11 |
Correct |
3 ms |
12120 KB |
Output is correct |
12 |
Correct |
3 ms |
12124 KB |
Output is correct |
13 |
Correct |
4 ms |
12376 KB |
Output is correct |
14 |
Correct |
4 ms |
12380 KB |
Output is correct |
15 |
Correct |
6 ms |
12380 KB |
Output is correct |
16 |
Correct |
6 ms |
12380 KB |
Output is correct |
17 |
Correct |
5 ms |
12380 KB |
Output is correct |
18 |
Correct |
3 ms |
12380 KB |
Output is correct |
19 |
Correct |
4 ms |
12380 KB |
Output is correct |
20 |
Correct |
4 ms |
12376 KB |
Output is correct |
21 |
Correct |
4 ms |
12380 KB |
Output is correct |
22 |
Correct |
4 ms |
12376 KB |
Output is correct |
23 |
Correct |
80 ms |
24156 KB |
Output is correct |
24 |
Correct |
83 ms |
24396 KB |
Output is correct |
25 |
Correct |
85 ms |
24156 KB |
Output is correct |
26 |
Correct |
216 ms |
23388 KB |
Output is correct |
27 |
Correct |
207 ms |
23388 KB |
Output is correct |
28 |
Correct |
200 ms |
23384 KB |
Output is correct |
29 |
Correct |
233 ms |
23132 KB |
Output is correct |
30 |
Correct |
241 ms |
23136 KB |
Output is correct |
31 |
Correct |
47 ms |
22992 KB |
Output is correct |
32 |
Correct |
33 ms |
25180 KB |
Output is correct |
33 |
Correct |
79 ms |
24208 KB |
Output is correct |
34 |
Correct |
92 ms |
24220 KB |
Output is correct |
35 |
Correct |
79 ms |
24156 KB |
Output is correct |
36 |
Correct |
114 ms |
24160 KB |
Output is correct |
37 |
Correct |
129 ms |
24336 KB |
Output is correct |
38 |
Correct |
122 ms |
24152 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12120 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 |
12120 KB |
Output is correct |
6 |
Correct |
3 ms |
12124 KB |
Output is correct |
7 |
Correct |
3 ms |
12124 KB |
Output is correct |
8 |
Correct |
3 ms |
12120 KB |
Output is correct |
9 |
Correct |
3 ms |
12120 KB |
Output is correct |
10 |
Correct |
3 ms |
12148 KB |
Output is correct |
11 |
Correct |
3 ms |
12120 KB |
Output is correct |
12 |
Correct |
3 ms |
12124 KB |
Output is correct |
13 |
Correct |
4 ms |
12376 KB |
Output is correct |
14 |
Correct |
4 ms |
12380 KB |
Output is correct |
15 |
Correct |
6 ms |
12380 KB |
Output is correct |
16 |
Correct |
6 ms |
12380 KB |
Output is correct |
17 |
Correct |
5 ms |
12380 KB |
Output is correct |
18 |
Correct |
3 ms |
12380 KB |
Output is correct |
19 |
Correct |
4 ms |
12380 KB |
Output is correct |
20 |
Correct |
4 ms |
12376 KB |
Output is correct |
21 |
Correct |
4 ms |
12380 KB |
Output is correct |
22 |
Correct |
4 ms |
12376 KB |
Output is correct |
23 |
Correct |
677 ms |
88656 KB |
Output is correct |
24 |
Correct |
560 ms |
88616 KB |
Output is correct |
25 |
Correct |
635 ms |
80600 KB |
Output is correct |
26 |
Correct |
661 ms |
87672 KB |
Output is correct |
27 |
Correct |
759 ms |
87676 KB |
Output is correct |
28 |
Correct |
720 ms |
81052 KB |
Output is correct |
29 |
Correct |
829 ms |
81184 KB |
Output is correct |
30 |
Correct |
532 ms |
80684 KB |
Output is correct |
31 |
Correct |
1242 ms |
80676 KB |
Output is correct |
32 |
Correct |
1676 ms |
80672 KB |
Output is correct |
33 |
Correct |
1713 ms |
81644 KB |
Output is correct |
34 |
Correct |
1176 ms |
81664 KB |
Output is correct |
35 |
Correct |
622 ms |
81648 KB |
Output is correct |
36 |
Correct |
391 ms |
94344 KB |
Output is correct |
37 |
Correct |
399 ms |
94496 KB |
Output is correct |
38 |
Correct |
411 ms |
93560 KB |
Output is correct |
39 |
Correct |
409 ms |
93764 KB |
Output is correct |
40 |
Correct |
359 ms |
90600 KB |
Output is correct |
41 |
Correct |
363 ms |
90440 KB |
Output is correct |
42 |
Correct |
277 ms |
89172 KB |
Output is correct |
43 |
Correct |
290 ms |
89172 KB |
Output is correct |
44 |
Correct |
80 ms |
24156 KB |
Output is correct |
45 |
Correct |
83 ms |
24396 KB |
Output is correct |
46 |
Correct |
85 ms |
24156 KB |
Output is correct |
47 |
Correct |
216 ms |
23388 KB |
Output is correct |
48 |
Correct |
207 ms |
23388 KB |
Output is correct |
49 |
Correct |
200 ms |
23384 KB |
Output is correct |
50 |
Correct |
233 ms |
23132 KB |
Output is correct |
51 |
Correct |
241 ms |
23136 KB |
Output is correct |
52 |
Correct |
47 ms |
22992 KB |
Output is correct |
53 |
Correct |
33 ms |
25180 KB |
Output is correct |
54 |
Correct |
79 ms |
24208 KB |
Output is correct |
55 |
Correct |
92 ms |
24220 KB |
Output is correct |
56 |
Correct |
79 ms |
24156 KB |
Output is correct |
57 |
Correct |
114 ms |
24160 KB |
Output is correct |
58 |
Correct |
129 ms |
24336 KB |
Output is correct |
59 |
Correct |
122 ms |
24152 KB |
Output is correct |
60 |
Correct |
782 ms |
91924 KB |
Output is correct |
61 |
Correct |
804 ms |
91928 KB |
Output is correct |
62 |
Correct |
792 ms |
91936 KB |
Output is correct |
63 |
Correct |
1791 ms |
83444 KB |
Output is correct |
64 |
Correct |
1800 ms |
83280 KB |
Output is correct |
65 |
Correct |
1814 ms |
83536 KB |
Output is correct |
66 |
Correct |
1948 ms |
81644 KB |
Output is correct |
67 |
Execution timed out |
2009 ms |
81656 KB |
Time limit exceeded |
68 |
Halted |
0 ms |
0 KB |
- |