#include "mountains.h"
#include <vector>
const int NMAX = 2000;
int N;
int X[NMAX + 5], Y[NMAX + 5];
int dp[NMAX + 5][NMAX + 5];
struct Point {
int x, y;
};
struct Hull {
std::vector < Point > st;
void Clear() {
st.clear();
}
bool ccw(Point a, Point b, Point c) {
return ((1LL * a.x * (b.y - c.y) + 1LL * b.x * (c.y - a.y) + 1LL * c.x * (a.y - b.y)) <= 0);
}
void Push(Point p) {
while(st.size() > 1 && ccw(st[(int)st.size() - 1], st[(int)st.size() - 2], p)) {
st.pop_back();
}
st.push_back(p);
}
int Top() {
return st.back().x;
}
int Second() {
return st[(int)st.size() - 2].x;
}
};
int maximum_deevs(std::vector<int> y) {
N = (int)y.size();
for(int i = 0; i < N; i++) {
X[i + 1] = i + 1;
Y[i + 1] = y[i];
}
int res = 0;
for(int i = N; i >= 1; i--) {
Hull hull;
//hull.Clear();
for(int j = i; j <= N; j++) {
hull.Push({X[j], Y[j]});
int top = hull.Top();
dp[i][j] = 1;
dp[i][j] = std::max(dp[i][j], dp[i][top - 1] + dp[top + 1][j]);
if((int)hull.st.size() > 1) {
int second = hull.Second();
dp[i][j] = std::max(dp[i][j], dp[i][second - 1] + dp[second + 1][j]);
}
res = std::max(res, dp[i][j]);
}
}
return res;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
364 KB |
Output is correct |
| 2 |
Correct |
0 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
0 ms |
364 KB |
Output is correct |
| 5 |
Correct |
0 ms |
364 KB |
Output is correct |
| 6 |
Correct |
0 ms |
364 KB |
Output is correct |
| 7 |
Correct |
0 ms |
364 KB |
Output is correct |
| 8 |
Correct |
0 ms |
364 KB |
Output is correct |
| 9 |
Correct |
0 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
0 ms |
364 KB |
Output is correct |
| 12 |
Correct |
0 ms |
364 KB |
Output is correct |
| 13 |
Correct |
0 ms |
364 KB |
Output is correct |
| 14 |
Correct |
0 ms |
364 KB |
Output is correct |
| 15 |
Correct |
0 ms |
364 KB |
Output is correct |
| 16 |
Correct |
0 ms |
364 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
364 KB |
Output is correct |
| 2 |
Correct |
0 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
0 ms |
364 KB |
Output is correct |
| 5 |
Correct |
0 ms |
364 KB |
Output is correct |
| 6 |
Correct |
0 ms |
364 KB |
Output is correct |
| 7 |
Correct |
0 ms |
364 KB |
Output is correct |
| 8 |
Correct |
0 ms |
364 KB |
Output is correct |
| 9 |
Correct |
0 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
0 ms |
364 KB |
Output is correct |
| 12 |
Correct |
0 ms |
364 KB |
Output is correct |
| 13 |
Correct |
0 ms |
364 KB |
Output is correct |
| 14 |
Correct |
0 ms |
364 KB |
Output is correct |
| 15 |
Correct |
0 ms |
364 KB |
Output is correct |
| 16 |
Correct |
0 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
492 KB |
Output is correct |
| 18 |
Correct |
1 ms |
492 KB |
Output is correct |
| 19 |
Correct |
0 ms |
492 KB |
Output is correct |
| 20 |
Correct |
0 ms |
492 KB |
Output is correct |
| 21 |
Correct |
0 ms |
492 KB |
Output is correct |
| 22 |
Correct |
1 ms |
492 KB |
Output is correct |
| 23 |
Correct |
0 ms |
492 KB |
Output is correct |
| 24 |
Correct |
1 ms |
492 KB |
Output is correct |
| 25 |
Correct |
1 ms |
492 KB |
Output is correct |
| 26 |
Correct |
1 ms |
492 KB |
Output is correct |
| 27 |
Correct |
1 ms |
492 KB |
Output is correct |
| 28 |
Correct |
1 ms |
492 KB |
Output is correct |
| 29 |
Correct |
1 ms |
492 KB |
Output is correct |
| 30 |
Correct |
1 ms |
492 KB |
Output is correct |
| 31 |
Correct |
1 ms |
492 KB |
Output is correct |
| 32 |
Correct |
1 ms |
492 KB |
Output is correct |
| 33 |
Correct |
1 ms |
492 KB |
Output is correct |
| 34 |
Correct |
1 ms |
492 KB |
Output is correct |
| 35 |
Correct |
1 ms |
492 KB |
Output is correct |
| 36 |
Correct |
1 ms |
492 KB |
Output is correct |
| 37 |
Correct |
1 ms |
492 KB |
Output is correct |
| 38 |
Correct |
1 ms |
492 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
364 KB |
Output is correct |
| 2 |
Correct |
0 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
0 ms |
364 KB |
Output is correct |
| 5 |
Correct |
0 ms |
364 KB |
Output is correct |
| 6 |
Correct |
0 ms |
364 KB |
Output is correct |
| 7 |
Correct |
0 ms |
364 KB |
Output is correct |
| 8 |
Correct |
0 ms |
364 KB |
Output is correct |
| 9 |
Correct |
0 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
0 ms |
364 KB |
Output is correct |
| 12 |
Correct |
0 ms |
364 KB |
Output is correct |
| 13 |
Correct |
0 ms |
364 KB |
Output is correct |
| 14 |
Correct |
0 ms |
364 KB |
Output is correct |
| 15 |
Correct |
0 ms |
364 KB |
Output is correct |
| 16 |
Correct |
0 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
492 KB |
Output is correct |
| 18 |
Correct |
1 ms |
492 KB |
Output is correct |
| 19 |
Correct |
0 ms |
492 KB |
Output is correct |
| 20 |
Correct |
0 ms |
492 KB |
Output is correct |
| 21 |
Correct |
0 ms |
492 KB |
Output is correct |
| 22 |
Correct |
1 ms |
492 KB |
Output is correct |
| 23 |
Correct |
0 ms |
492 KB |
Output is correct |
| 24 |
Correct |
1 ms |
492 KB |
Output is correct |
| 25 |
Correct |
1 ms |
492 KB |
Output is correct |
| 26 |
Correct |
1 ms |
492 KB |
Output is correct |
| 27 |
Correct |
1 ms |
492 KB |
Output is correct |
| 28 |
Correct |
1 ms |
492 KB |
Output is correct |
| 29 |
Correct |
1 ms |
492 KB |
Output is correct |
| 30 |
Correct |
1 ms |
492 KB |
Output is correct |
| 31 |
Correct |
1 ms |
492 KB |
Output is correct |
| 32 |
Correct |
1 ms |
492 KB |
Output is correct |
| 33 |
Correct |
1 ms |
492 KB |
Output is correct |
| 34 |
Correct |
1 ms |
492 KB |
Output is correct |
| 35 |
Correct |
1 ms |
492 KB |
Output is correct |
| 36 |
Correct |
1 ms |
492 KB |
Output is correct |
| 37 |
Correct |
1 ms |
492 KB |
Output is correct |
| 38 |
Correct |
1 ms |
492 KB |
Output is correct |
| 39 |
Correct |
1 ms |
1260 KB |
Output is correct |
| 40 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 41 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 42 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 43 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 44 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 45 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 46 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 47 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 48 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 49 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 50 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 51 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 52 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 53 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 54 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 55 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 56 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 57 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 58 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 59 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 60 |
Correct |
2 ms |
1772 KB |
Output is correct |
| 61 |
Correct |
2 ms |
1772 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
364 KB |
Output is correct |
| 2 |
Correct |
0 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
0 ms |
364 KB |
Output is correct |
| 5 |
Correct |
0 ms |
364 KB |
Output is correct |
| 6 |
Correct |
0 ms |
364 KB |
Output is correct |
| 7 |
Correct |
0 ms |
364 KB |
Output is correct |
| 8 |
Correct |
0 ms |
364 KB |
Output is correct |
| 9 |
Correct |
0 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
0 ms |
364 KB |
Output is correct |
| 12 |
Correct |
0 ms |
364 KB |
Output is correct |
| 13 |
Correct |
0 ms |
364 KB |
Output is correct |
| 14 |
Correct |
0 ms |
364 KB |
Output is correct |
| 15 |
Correct |
0 ms |
364 KB |
Output is correct |
| 16 |
Correct |
0 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
492 KB |
Output is correct |
| 18 |
Correct |
1 ms |
492 KB |
Output is correct |
| 19 |
Correct |
0 ms |
492 KB |
Output is correct |
| 20 |
Correct |
0 ms |
492 KB |
Output is correct |
| 21 |
Correct |
0 ms |
492 KB |
Output is correct |
| 22 |
Correct |
1 ms |
492 KB |
Output is correct |
| 23 |
Correct |
0 ms |
492 KB |
Output is correct |
| 24 |
Correct |
1 ms |
492 KB |
Output is correct |
| 25 |
Correct |
1 ms |
492 KB |
Output is correct |
| 26 |
Correct |
1 ms |
492 KB |
Output is correct |
| 27 |
Correct |
1 ms |
492 KB |
Output is correct |
| 28 |
Correct |
1 ms |
492 KB |
Output is correct |
| 29 |
Correct |
1 ms |
492 KB |
Output is correct |
| 30 |
Correct |
1 ms |
492 KB |
Output is correct |
| 31 |
Correct |
1 ms |
492 KB |
Output is correct |
| 32 |
Correct |
1 ms |
492 KB |
Output is correct |
| 33 |
Correct |
1 ms |
492 KB |
Output is correct |
| 34 |
Correct |
1 ms |
492 KB |
Output is correct |
| 35 |
Correct |
1 ms |
492 KB |
Output is correct |
| 36 |
Correct |
1 ms |
492 KB |
Output is correct |
| 37 |
Correct |
1 ms |
492 KB |
Output is correct |
| 38 |
Correct |
1 ms |
492 KB |
Output is correct |
| 39 |
Correct |
1 ms |
1260 KB |
Output is correct |
| 40 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 41 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 42 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 43 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 44 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 45 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 46 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 47 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 48 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 49 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 50 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 51 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 52 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 53 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 54 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 55 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 56 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 57 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 58 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 59 |
Correct |
2 ms |
1644 KB |
Output is correct |
| 60 |
Correct |
2 ms |
1772 KB |
Output is correct |
| 61 |
Correct |
2 ms |
1772 KB |
Output is correct |
| 62 |
Correct |
13 ms |
6252 KB |
Output is correct |
| 63 |
Correct |
49 ms |
14188 KB |
Output is correct |
| 64 |
Correct |
50 ms |
14188 KB |
Output is correct |
| 65 |
Correct |
51 ms |
14188 KB |
Output is correct |
| 66 |
Correct |
49 ms |
14188 KB |
Output is correct |
| 67 |
Correct |
49 ms |
14188 KB |
Output is correct |
| 68 |
Correct |
49 ms |
14188 KB |
Output is correct |
| 69 |
Correct |
49 ms |
14188 KB |
Output is correct |
| 70 |
Correct |
43 ms |
14188 KB |
Output is correct |
| 71 |
Correct |
42 ms |
14188 KB |
Output is correct |
| 72 |
Correct |
43 ms |
14188 KB |
Output is correct |
| 73 |
Correct |
42 ms |
14188 KB |
Output is correct |
| 74 |
Correct |
42 ms |
14188 KB |
Output is correct |
| 75 |
Correct |
42 ms |
14188 KB |
Output is correct |
| 76 |
Correct |
47 ms |
14188 KB |
Output is correct |
| 77 |
Correct |
37 ms |
14188 KB |
Output is correct |
| 78 |
Correct |
37 ms |
14188 KB |
Output is correct |
| 79 |
Correct |
40 ms |
14188 KB |
Output is correct |
| 80 |
Correct |
37 ms |
14188 KB |
Output is correct |
| 81 |
Correct |
37 ms |
14188 KB |
Output is correct |
| 82 |
Correct |
41 ms |
14336 KB |
Output is correct |
| 83 |
Correct |
49 ms |
14188 KB |
Output is correct |
| 84 |
Correct |
49 ms |
14188 KB |
Output is correct |
| 85 |
Correct |
47 ms |
14188 KB |
Output is correct |
| 86 |
Correct |
47 ms |
14188 KB |
Output is correct |
