#include"mountains.h"
#include<bits/stdc++.h>
using namespace std;
const int N = 2010;
int y[N];
int f[N][N];
bool Judge(int a,int b,int c) { // a see c ?
// ((y[a] - y[b]) / (a - b)) > ((y[a] - y[c]) / (a - c));
return 1ll * (y[a] - y[b]) * (a - c) > 1ll * (y[a] - y[c]) * (a - b);
}
int solve(int l,int r) {
if (f[l][r]) return f[l][r];
if (l > r) return 0;
if (l == r) return 1;
int pos = -1, mx = -1;
for (int i=l; i<=r; ++i) if (y[i] > mx) pos = i, mx = y[i];
int ans1 = solve(l, pos - 1) + solve(pos + 1, r);
int ans2 = 0;
for (int i=pos-1,j; i>=l; i=j) {
for (j=i-1; j>=l; --j) {
if (Judge(j, i, pos)) {
if (j == l) ans2 += solve(l, i - 1);
continue;
}
if (j + 1 <= i - 1) ans2 += solve(j + 1, i - 1);
break;
}
}
for (int i=pos+1,j; i<=r; i=j) {
for (j=i+1; j<=r; ++j) {
if (Judge(pos, i, j)) {
if (j == r) ans2 += solve(i + 1, r);
continue;
}
if (i + 1 <= j - 1) ans2 += solve(i + 1, j - 1);
break;
}
}
return f[l][r] = max(ans1, ans2 + 1);
}
int maximum_deevs(vector<int> A) {
int n = A.size();
for (int i=1; i<=n; ++i) y[i] = A[i - 1];
return solve(1, n);
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
372 KB |
Output is correct |
3 |
Correct |
2 ms |
452 KB |
Output is correct |
4 |
Correct |
2 ms |
592 KB |
Output is correct |
5 |
Correct |
2 ms |
592 KB |
Output is correct |
6 |
Correct |
2 ms |
592 KB |
Output is correct |
7 |
Correct |
2 ms |
592 KB |
Output is correct |
8 |
Correct |
2 ms |
592 KB |
Output is correct |
9 |
Correct |
2 ms |
592 KB |
Output is correct |
10 |
Correct |
2 ms |
624 KB |
Output is correct |
11 |
Correct |
2 ms |
648 KB |
Output is correct |
12 |
Correct |
2 ms |
652 KB |
Output is correct |
13 |
Correct |
2 ms |
728 KB |
Output is correct |
14 |
Correct |
2 ms |
728 KB |
Output is correct |
15 |
Correct |
2 ms |
728 KB |
Output is correct |
16 |
Correct |
2 ms |
728 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
372 KB |
Output is correct |
3 |
Correct |
2 ms |
452 KB |
Output is correct |
4 |
Correct |
2 ms |
592 KB |
Output is correct |
5 |
Correct |
2 ms |
592 KB |
Output is correct |
6 |
Correct |
2 ms |
592 KB |
Output is correct |
7 |
Correct |
2 ms |
592 KB |
Output is correct |
8 |
Correct |
2 ms |
592 KB |
Output is correct |
9 |
Correct |
2 ms |
592 KB |
Output is correct |
10 |
Correct |
2 ms |
624 KB |
Output is correct |
11 |
Correct |
2 ms |
648 KB |
Output is correct |
12 |
Correct |
2 ms |
652 KB |
Output is correct |
13 |
Correct |
2 ms |
728 KB |
Output is correct |
14 |
Correct |
2 ms |
728 KB |
Output is correct |
15 |
Correct |
2 ms |
728 KB |
Output is correct |
16 |
Correct |
2 ms |
728 KB |
Output is correct |
17 |
Correct |
2 ms |
728 KB |
Output is correct |
18 |
Correct |
2 ms |
728 KB |
Output is correct |
19 |
Correct |
2 ms |
728 KB |
Output is correct |
20 |
Correct |
2 ms |
728 KB |
Output is correct |
21 |
Correct |
2 ms |
728 KB |
Output is correct |
22 |
Correct |
2 ms |
728 KB |
Output is correct |
23 |
Correct |
2 ms |
728 KB |
Output is correct |
24 |
Correct |
2 ms |
728 KB |
Output is correct |
25 |
Correct |
2 ms |
728 KB |
Output is correct |
26 |
Correct |
2 ms |
728 KB |
Output is correct |
27 |
Correct |
2 ms |
728 KB |
Output is correct |
28 |
Correct |
2 ms |
728 KB |
Output is correct |
29 |
Correct |
2 ms |
728 KB |
Output is correct |
30 |
Correct |
3 ms |
728 KB |
Output is correct |
31 |
Correct |
2 ms |
736 KB |
Output is correct |
32 |
Correct |
2 ms |
736 KB |
Output is correct |
33 |
Correct |
2 ms |
740 KB |
Output is correct |
34 |
Correct |
2 ms |
744 KB |
Output is correct |
35 |
Correct |
2 ms |
748 KB |
Output is correct |
36 |
Correct |
2 ms |
752 KB |
Output is correct |
37 |
Correct |
2 ms |
884 KB |
Output is correct |
38 |
Correct |
2 ms |
888 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
372 KB |
Output is correct |
3 |
Correct |
2 ms |
452 KB |
Output is correct |
4 |
Correct |
2 ms |
592 KB |
Output is correct |
5 |
Correct |
2 ms |
592 KB |
Output is correct |
6 |
Correct |
2 ms |
592 KB |
Output is correct |
7 |
Correct |
2 ms |
592 KB |
Output is correct |
8 |
Correct |
2 ms |
592 KB |
Output is correct |
9 |
Correct |
2 ms |
592 KB |
Output is correct |
10 |
Correct |
2 ms |
624 KB |
Output is correct |
11 |
Correct |
2 ms |
648 KB |
Output is correct |
12 |
Correct |
2 ms |
652 KB |
Output is correct |
13 |
Correct |
2 ms |
728 KB |
Output is correct |
14 |
Correct |
2 ms |
728 KB |
Output is correct |
15 |
Correct |
2 ms |
728 KB |
Output is correct |
16 |
Correct |
2 ms |
728 KB |
Output is correct |
17 |
Correct |
2 ms |
728 KB |
Output is correct |
18 |
Correct |
2 ms |
728 KB |
Output is correct |
19 |
Correct |
2 ms |
728 KB |
Output is correct |
20 |
Correct |
2 ms |
728 KB |
Output is correct |
21 |
Correct |
2 ms |
728 KB |
Output is correct |
22 |
Correct |
2 ms |
728 KB |
Output is correct |
23 |
Correct |
2 ms |
728 KB |
Output is correct |
24 |
Correct |
2 ms |
728 KB |
Output is correct |
25 |
Correct |
2 ms |
728 KB |
Output is correct |
26 |
Correct |
2 ms |
728 KB |
Output is correct |
27 |
Correct |
2 ms |
728 KB |
Output is correct |
28 |
Correct |
2 ms |
728 KB |
Output is correct |
29 |
Correct |
2 ms |
728 KB |
Output is correct |
30 |
Correct |
3 ms |
728 KB |
Output is correct |
31 |
Correct |
2 ms |
736 KB |
Output is correct |
32 |
Correct |
2 ms |
736 KB |
Output is correct |
33 |
Correct |
2 ms |
740 KB |
Output is correct |
34 |
Correct |
2 ms |
744 KB |
Output is correct |
35 |
Correct |
2 ms |
748 KB |
Output is correct |
36 |
Correct |
2 ms |
752 KB |
Output is correct |
37 |
Correct |
2 ms |
884 KB |
Output is correct |
38 |
Correct |
2 ms |
888 KB |
Output is correct |
39 |
Correct |
2 ms |
1020 KB |
Output is correct |
40 |
Correct |
3 ms |
1152 KB |
Output is correct |
41 |
Correct |
3 ms |
1156 KB |
Output is correct |
42 |
Correct |
3 ms |
1160 KB |
Output is correct |
43 |
Correct |
3 ms |
1164 KB |
Output is correct |
44 |
Correct |
2 ms |
1168 KB |
Output is correct |
45 |
Correct |
3 ms |
1172 KB |
Output is correct |
46 |
Correct |
3 ms |
1304 KB |
Output is correct |
47 |
Correct |
3 ms |
1308 KB |
Output is correct |
48 |
Correct |
3 ms |
1308 KB |
Output is correct |
49 |
Correct |
3 ms |
1316 KB |
Output is correct |
50 |
Correct |
3 ms |
1320 KB |
Output is correct |
51 |
Correct |
2 ms |
1320 KB |
Output is correct |
52 |
Correct |
4 ms |
1456 KB |
Output is correct |
53 |
Correct |
4 ms |
1460 KB |
Output is correct |
54 |
Correct |
4 ms |
1464 KB |
Output is correct |
55 |
Correct |
4 ms |
1468 KB |
Output is correct |
56 |
Correct |
5 ms |
1480 KB |
Output is correct |
57 |
Correct |
2 ms |
1480 KB |
Output is correct |
58 |
Correct |
3 ms |
1480 KB |
Output is correct |
59 |
Correct |
3 ms |
1480 KB |
Output is correct |
60 |
Correct |
3 ms |
1480 KB |
Output is correct |
61 |
Correct |
3 ms |
2004 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
372 KB |
Output is correct |
3 |
Correct |
2 ms |
452 KB |
Output is correct |
4 |
Correct |
2 ms |
592 KB |
Output is correct |
5 |
Correct |
2 ms |
592 KB |
Output is correct |
6 |
Correct |
2 ms |
592 KB |
Output is correct |
7 |
Correct |
2 ms |
592 KB |
Output is correct |
8 |
Correct |
2 ms |
592 KB |
Output is correct |
9 |
Correct |
2 ms |
592 KB |
Output is correct |
10 |
Correct |
2 ms |
624 KB |
Output is correct |
11 |
Correct |
2 ms |
648 KB |
Output is correct |
12 |
Correct |
2 ms |
652 KB |
Output is correct |
13 |
Correct |
2 ms |
728 KB |
Output is correct |
14 |
Correct |
2 ms |
728 KB |
Output is correct |
15 |
Correct |
2 ms |
728 KB |
Output is correct |
16 |
Correct |
2 ms |
728 KB |
Output is correct |
17 |
Correct |
2 ms |
728 KB |
Output is correct |
18 |
Correct |
2 ms |
728 KB |
Output is correct |
19 |
Correct |
2 ms |
728 KB |
Output is correct |
20 |
Correct |
2 ms |
728 KB |
Output is correct |
21 |
Correct |
2 ms |
728 KB |
Output is correct |
22 |
Correct |
2 ms |
728 KB |
Output is correct |
23 |
Correct |
2 ms |
728 KB |
Output is correct |
24 |
Correct |
2 ms |
728 KB |
Output is correct |
25 |
Correct |
2 ms |
728 KB |
Output is correct |
26 |
Correct |
2 ms |
728 KB |
Output is correct |
27 |
Correct |
2 ms |
728 KB |
Output is correct |
28 |
Correct |
2 ms |
728 KB |
Output is correct |
29 |
Correct |
2 ms |
728 KB |
Output is correct |
30 |
Correct |
3 ms |
728 KB |
Output is correct |
31 |
Correct |
2 ms |
736 KB |
Output is correct |
32 |
Correct |
2 ms |
736 KB |
Output is correct |
33 |
Correct |
2 ms |
740 KB |
Output is correct |
34 |
Correct |
2 ms |
744 KB |
Output is correct |
35 |
Correct |
2 ms |
748 KB |
Output is correct |
36 |
Correct |
2 ms |
752 KB |
Output is correct |
37 |
Correct |
2 ms |
884 KB |
Output is correct |
38 |
Correct |
2 ms |
888 KB |
Output is correct |
39 |
Correct |
2 ms |
1020 KB |
Output is correct |
40 |
Correct |
3 ms |
1152 KB |
Output is correct |
41 |
Correct |
3 ms |
1156 KB |
Output is correct |
42 |
Correct |
3 ms |
1160 KB |
Output is correct |
43 |
Correct |
3 ms |
1164 KB |
Output is correct |
44 |
Correct |
2 ms |
1168 KB |
Output is correct |
45 |
Correct |
3 ms |
1172 KB |
Output is correct |
46 |
Correct |
3 ms |
1304 KB |
Output is correct |
47 |
Correct |
3 ms |
1308 KB |
Output is correct |
48 |
Correct |
3 ms |
1308 KB |
Output is correct |
49 |
Correct |
3 ms |
1316 KB |
Output is correct |
50 |
Correct |
3 ms |
1320 KB |
Output is correct |
51 |
Correct |
2 ms |
1320 KB |
Output is correct |
52 |
Correct |
4 ms |
1456 KB |
Output is correct |
53 |
Correct |
4 ms |
1460 KB |
Output is correct |
54 |
Correct |
4 ms |
1464 KB |
Output is correct |
55 |
Correct |
4 ms |
1468 KB |
Output is correct |
56 |
Correct |
5 ms |
1480 KB |
Output is correct |
57 |
Correct |
2 ms |
1480 KB |
Output is correct |
58 |
Correct |
3 ms |
1480 KB |
Output is correct |
59 |
Correct |
3 ms |
1480 KB |
Output is correct |
60 |
Correct |
3 ms |
1480 KB |
Output is correct |
61 |
Correct |
3 ms |
2004 KB |
Output is correct |
62 |
Correct |
4 ms |
2136 KB |
Output is correct |
63 |
Correct |
6 ms |
3684 KB |
Output is correct |
64 |
Correct |
17 ms |
3720 KB |
Output is correct |
65 |
Correct |
6 ms |
3740 KB |
Output is correct |
66 |
Correct |
6 ms |
3740 KB |
Output is correct |
67 |
Correct |
6 ms |
3812 KB |
Output is correct |
68 |
Correct |
6 ms |
3812 KB |
Output is correct |
69 |
Correct |
6 ms |
3812 KB |
Output is correct |
70 |
Correct |
11 ms |
5056 KB |
Output is correct |
71 |
Correct |
10 ms |
5072 KB |
Output is correct |
72 |
Correct |
13 ms |
5072 KB |
Output is correct |
73 |
Correct |
11 ms |
5088 KB |
Output is correct |
74 |
Correct |
11 ms |
5104 KB |
Output is correct |
75 |
Correct |
11 ms |
5104 KB |
Output is correct |
76 |
Correct |
5 ms |
5104 KB |
Output is correct |
77 |
Correct |
21 ms |
8856 KB |
Output is correct |
78 |
Correct |
21 ms |
8856 KB |
Output is correct |
79 |
Correct |
21 ms |
8872 KB |
Output is correct |
80 |
Correct |
21 ms |
8872 KB |
Output is correct |
81 |
Correct |
21 ms |
8872 KB |
Output is correct |
82 |
Correct |
11 ms |
8872 KB |
Output is correct |
83 |
Correct |
15 ms |
8872 KB |
Output is correct |
84 |
Correct |
13 ms |
8872 KB |
Output is correct |
85 |
Correct |
10 ms |
8872 KB |
Output is correct |
86 |
Correct |
18 ms |
9464 KB |
Output is correct |