# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
428914 |
2021-06-15T15:25:38 Z |
Pety |
Global Warming (CEOI18_glo) |
C++14 |
|
1437 ms |
262148 KB |
#include <bits/stdc++.h>
using namespace std;
int n, x, pref[200002], suf[200002], v[200002];
vector<int>aux;
int aint[4 * 3 * 200000 + 2];
unordered_map<int, int>mp;
void update (int nod, int st, int dr, int poz, int val) {
if (st == dr) {
aint[nod] = val;
return;
}
int mij = (st + dr) / 2;
if (poz <= mij)
update(2 * nod, st, mij, poz, val);
else
update(2 * nod + 1, mij + 1, dr, poz, val);
aint[nod] = max(aint[2 * nod], aint[2 * nod + 1]);
}
int ans = 0;
void query (int nod, int st, int dr, int a, int b) {
//if (a > b)
//return;
if (a <= st && dr <= b) {
ans = max(ans, aint[nod]);
return;
}
int mij = (st + dr) / 2;
if (a <= mij)
query(2 * nod, st, mij, a, b);
if (b > mij)
query(2 * nod + 1, mij + 1, dr, a, b);
}
int nr = 0;
void reset () {
for (int i = 1; i <= 4*nr; i++)
aint[i] = 0;
}
int main() {
cin >> n >> x;
for (int i = 1; i <= n; i++) { cin >> v[i];
aux.push_back(v[i] + x);
aux.push_back(v[i] - x);
aux.push_back(v[i]);
}
sort(aux.begin(), aux.end());
for (int i = 0; i < aux.size(); i++)
if (i == 0 || aux[i] != aux[i - 1]) {
nr++;
mp[aux[i]] = nr;
}
int sol = 0;
for (int i = 1; i <= n; i++) {
ans = 0;
assert(mp[v[i]]);
query(1, 1, nr, 1, mp[v[i]] - 1);
pref[i] = ans + 1;
update(1, 1, nr, mp[v[i]], pref[i]);
sol = max(ans, pref[i]);
//cout << pref[i] << "\n";
}
reset();
for (int i = n; i >= 1; i--) {
ans = 0;
query(1, 1, nr, mp[v[i]] + 1, nr);
suf[i] = ans + 1;
update(1, 1, nr, mp[v[i]], suf[i]);
}
reset();
for (int i = 1; i <= n; i++) {
ans = 0;
query(1, 1, nr, 1, mp[v[i] + x] - 1);
sol = max(suf[i] + ans, sol);
update(1, 1, nr, mp[v[i]], pref[i]);
}
reset();
for (int i = n; i >= 1; i--) {
ans = 0;
query(1, 1, nr, mp[v[i] - x] + 1, nr);
sol = max(sol, ans + pref[i]);
update(1, 1, nr, mp[v[i]], suf[i]);
}
cout << sol << "\n";
return 0;
}
Compilation message
glo.cpp: In function 'int main()':
glo.cpp:50:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
50 | for (int i = 0; i < aux.size(); i++)
| ~~^~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
1 ms |
216 KB |
Output is correct |
8 |
Runtime error |
153 ms |
262148 KB |
Execution killed with signal 9 |
9 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
1 ms |
216 KB |
Output is correct |
8 |
Runtime error |
153 ms |
262148 KB |
Execution killed with signal 9 |
9 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
1 ms |
216 KB |
Output is correct |
8 |
Runtime error |
153 ms |
262148 KB |
Execution killed with signal 9 |
9 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
512 ms |
262148 KB |
Execution killed with signal 9 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
300 ms |
9880 KB |
Output is correct |
2 |
Correct |
227 ms |
9896 KB |
Output is correct |
3 |
Correct |
265 ms |
9824 KB |
Output is correct |
4 |
Correct |
106 ms |
5580 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
84 ms |
4540 KB |
Output is correct |
7 |
Correct |
194 ms |
8248 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
619 ms |
19500 KB |
Output is correct |
2 |
Correct |
658 ms |
19504 KB |
Output is correct |
3 |
Correct |
1437 ms |
38748 KB |
Output is correct |
4 |
Correct |
643 ms |
21840 KB |
Output is correct |
5 |
Correct |
264 ms |
19500 KB |
Output is correct |
6 |
Correct |
450 ms |
37048 KB |
Output is correct |
7 |
Correct |
470 ms |
37116 KB |
Output is correct |
8 |
Correct |
443 ms |
19496 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
1 ms |
216 KB |
Output is correct |
8 |
Runtime error |
153 ms |
262148 KB |
Execution killed with signal 9 |
9 |
Halted |
0 ms |
0 KB |
- |