#include <iostream>
#include <set>
#include <cmath>
#include <queue>
#include <vector>
#include <cstdlib>
#include <ctime>
#include <cmath>
#include <algorithm>
#include <cassert>
#include <map>
#include <deque>
using namespace std;
struct Node {
int mx = 0;
int cnt = 0;
Node (int mx, int cnt) {
this->mx = mx, this->cnt = cnt;
}
};
struct SegmentTree {
vector<Node> vec;
Node id = Node(-1, -1);
Node merge (Node left, Node right) {
if (left.mx == -1) return right;
if (right.mx == -1) return left;
if (left.mx > right.mx) return left;
if (left.mx < right.mx) return right;
left.cnt += right.cnt;
return left;
}
Node query (int dum, int tl, int tr, int l, int r) {
if (tl >= l and tr <= r) {
return vec[dum];
}
if (r < tl or tr < l) {
return id;
}
return merge(query(2 * dum + 1, tl, (tl + tr)/2, l, r), query(2 * dum + 2, (tl + tr)/2 + 1, tr, l, r));
}
Node query (int l, int r) {
return query(0, 0, (int)vec.size()/2 - 1, l, r);
}
void update (int dum, Node node) {
dum += (int)vec.size()/2 - 1;
vec[dum] = node;
while (dum != 0) {
dum = (dum - 1)/2;
vec[dum] = merge(vec[2 * dum + 1], vec[2 * dum + 2]);
}
}
SegmentTree (int n) {
n = (1 << (int)log2(n)) * 2;
vec.assign(2 * n, id);
}
};
vector<Node> lis (vector<int>& v) {
SegmentTree st(v.size());
map<int,vector<int>> oc;
for (int i = 0; i < v.size(); i++) {
oc[v[i]].push_back(i);
}
vector<Node> vec;
vec.push_back(Node(0, 1));
int used = pow(2, v.size() - 1);
for (auto& p: oc) {
vector<Node> upd;
for (int i: p.second) {
Node node = st.query(0, i - 1);
if (node.mx == -1) {
node = Node(1, 1);
} else {
node.mx += 1;
}
upd.push_back(node);
}
reverse(upd.begin(), upd.end());
for (int i: p.second) {
st.update(i, upd.back()), upd.pop_back();
}
for (int i = 0; i < p.second.size(); i++) {
used /= 2;
}
vec.emplace_back(st.query(0, (int)v.size() - 1));
//vec.back().cnt *= pow(2, (int)v.size() - vec.back().mx);
}
return vec;
}
vector<Node> lds (vector<int>& v) {
SegmentTree st(v.size());
map<int,vector<int>> oc;
for (int i = 0; i < v.size(); i++) {
oc[-v[i]].push_back(i);
}
vector<Node> vec;
vec.push_back(Node(0, 1));
for (auto& p: oc) {
vector<Node> upd;
for (int i: p.second) {
Node node = st.query(i + 1, (int)v.size() - 1);
if (node.mx == -1) {
node = Node(1, 1);
} else {
node.mx += 1;
}
upd.push_back(node);
}
reverse(upd.begin(), upd.end());
for (int i: p.second) {
st.update(i, upd.back()), upd.pop_back();
}
vec.emplace_back(st.query(0, (int)v.size() - 1));
//vec.back().cnt *= pow(2, (int)v.size() - vec.back().mx);
}
reverse(vec.begin(), vec.end());
return vec;
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n;
cin >> n;
vector<int> v(n);
for (int i = 0; i < n; i++) {
cin >> v[i];
}
auto a1 = lds(v);
auto a2 = lis(v);
int mx = 0, cnt = 0;
for (int i = 0; i < a1.size(); i++) {
if (a1[i].mx + a2[i].mx > mx) {
mx = a1[i].mx + a2[i].mx;
cnt = a1[i].cnt * a2[i].cnt;
} else if (a1[i].mx + a2[i].mx == mx) {
cnt += a1[i].cnt * a2[i].cnt;
}
}
cout << mx << " " << cnt;
}
Compilation message
zoltan.cpp: In function 'std::vector<Node> lis(std::vector<int>&)':
zoltan.cpp:60:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
60 | for (int i = 0; i < v.size(); i++) {
| ~~^~~~~~~~~~
zoltan.cpp:81:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
81 | for (int i = 0; i < p.second.size(); i++) {
| ~~^~~~~~~~~~~~~~~~~
zoltan.cpp: In function 'std::vector<Node> lds(std::vector<int>&)':
zoltan.cpp:92:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
92 | for (int i = 0; i < v.size(); i++) {
| ~~^~~~~~~~~~
zoltan.cpp: In function 'int main()':
zoltan.cpp:130:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Node>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
130 | for (int i = 0; i < a1.size(); i++) {
| ~~^~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 2 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 3 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 4 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 5 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
| 6 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 7 |
Incorrect |
2 ms |
468 KB |
Output isn't correct |
| 8 |
Incorrect |
2 ms |
468 KB |
Output isn't correct |
| 9 |
Incorrect |
2 ms |
468 KB |
Output isn't correct |
| 10 |
Incorrect |
2 ms |
452 KB |
Output isn't correct |
| 11 |
Incorrect |
327 ms |
28004 KB |
Output isn't correct |
| 12 |
Incorrect |
264 ms |
25136 KB |
Output isn't correct |
| 13 |
Incorrect |
244 ms |
21016 KB |
Output isn't correct |
| 14 |
Incorrect |
411 ms |
25628 KB |
Output isn't correct |
| 15 |
Incorrect |
530 ms |
30260 KB |
Output isn't correct |
| 16 |
Runtime error |
634 ms |
34060 KB |
Memory limit exceeded |
| 17 |
Incorrect |
374 ms |
29508 KB |
Output isn't correct |
| 18 |
Incorrect |
385 ms |
29384 KB |
Output isn't correct |
| 19 |
Incorrect |
376 ms |
29488 KB |
Output isn't correct |
| 20 |
Incorrect |
377 ms |
29400 KB |
Output isn't correct |
