#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> pii;
const int maxn = 1e5 + 100;
int n, k;
int a[maxn];
int t[maxn];
int dp[maxn];
vector<pii> g[maxn];
int l[maxn];
int r[maxn];
int pref[maxn];
void upd(int i, int x){
for(; i <= n; i |= (i + 1)) t[i] = max(t[i], x);
}
int get(int i){
int res = 0;
for(; i > 0; i = (i & (i + 1)) - 1) res = max(res, t[i]);
return res;
}
void init(int N, std::vector<int> H){
n = N;
for(int i = 1; i <= n; i++){
a[i] = H[i-1];
}
k = 1;
while(k < n && a[k+1] > a[k]) k++;
for(int i = k + 1; i <= n; i++){
if(a[i-1] < a[i]) k = 0;
}
for(int i = 1; i <= n; i++){
pref[i] = pref[i-1];
if(a[i] < min(a[i+1], a[i-1])) pref[i]++;
}
}
int max_towers(int L, int R, int D){
if(L == R) return 1;
L++; R++;
if(k){
if(L < k && k < R) return 2;
return 1;
}
if(D == 1){
int ans = pref[R-1] - pref[L];
if(a[L] < a[L+1]) ans++;
if(a[R] < a[R-1]) ans++;
return ans;
}
for(int i = 1; i <= n; i++){
t[i] = 0;
g[i].clear();
}
vector<int> v;
for(int i = L; i <= R; i++){
while(v.size() && a[v.back()] <= a[i]) v.pop_back();
v.push_back(i);
l[i] = L - 1;
for(int tl = 0, tr = v.size() - 1; tl <= tr;){
int mid = (tl + tr) >> 1;
if(a[v[mid]] - D < a[i]) tr = mid - 1;
else tl = mid + 1, l[i] = v[mid];
}
}
v.clear();
for(int i = R; i >= L; i--){
while(v.size() && a[v.back()] <= a[i]) v.pop_back();
v.push_back(i);
r[i] = R + 1;
for(int tl = 0, tr = v.size() - 1; tl <= tr;){
int mid = (tl + tr) >> 1;
if(a[v[mid]] - D < a[i]) tr = mid - 1;
else tl = mid + 1, r[i] = v[mid];
}
}
int ans = 0;
for(int i = L; i <= R; i++){
for(auto [p, x]: g[i]){
upd(p, x);
}
dp[i] = get(l[i]) + 1;
g[r[i]].push_back({i, dp[i]});
ans = max(ans, dp[i]);
}
return ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
295 ms |
5208 KB |
2nd lines differ - on the 1st token, expected: '1', found: '2' |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
4440 KB |
Output is correct |
| 2 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 3 |
Correct |
1 ms |
4528 KB |
Output is correct |
| 4 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 7 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 10 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 12 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 13 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 14 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 15 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 16 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 17 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 18 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 19 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 20 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 21 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 22 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 23 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 24 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 25 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 26 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 27 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 28 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 29 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 30 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 31 |
Correct |
2 ms |
3672 KB |
Output is correct |
| 32 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 33 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 34 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 35 |
Correct |
1 ms |
3672 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
4440 KB |
Output is correct |
| 2 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 3 |
Correct |
1 ms |
4528 KB |
Output is correct |
| 4 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 7 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 10 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 12 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 13 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 14 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 15 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 16 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 17 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 18 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 19 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 20 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 21 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 22 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 23 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 24 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 25 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 26 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 27 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 28 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 29 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 30 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 31 |
Correct |
2 ms |
3672 KB |
Output is correct |
| 32 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 33 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 34 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 35 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 36 |
Correct |
9 ms |
5464 KB |
Output is correct |
| 37 |
Correct |
14 ms |
5584 KB |
Output is correct |
| 38 |
Correct |
12 ms |
5720 KB |
Output is correct |
| 39 |
Correct |
18 ms |
5940 KB |
Output is correct |
| 40 |
Correct |
10 ms |
5720 KB |
Output is correct |
| 41 |
Correct |
15 ms |
6608 KB |
Output is correct |
| 42 |
Correct |
9 ms |
5720 KB |
Output is correct |
| 43 |
Correct |
16 ms |
5780 KB |
Output is correct |
| 44 |
Correct |
9 ms |
5720 KB |
Output is correct |
| 45 |
Correct |
10 ms |
5720 KB |
Output is correct |
| 46 |
Correct |
10 ms |
5720 KB |
Output is correct |
| 47 |
Correct |
10 ms |
5708 KB |
Output is correct |
| 48 |
Correct |
9 ms |
5720 KB |
Output is correct |
| 49 |
Correct |
15 ms |
5720 KB |
Output is correct |
| 50 |
Correct |
13 ms |
5708 KB |
Output is correct |
| 51 |
Correct |
9 ms |
5720 KB |
Output is correct |
| 52 |
Correct |
10 ms |
4952 KB |
Output is correct |
| 53 |
Correct |
10 ms |
5708 KB |
Output is correct |
| 54 |
Correct |
9 ms |
5712 KB |
Output is correct |
| 55 |
Correct |
13 ms |
5720 KB |
Output is correct |
| 56 |
Correct |
13 ms |
4952 KB |
Output is correct |
| 57 |
Correct |
18 ms |
6472 KB |
Output is correct |
| 58 |
Correct |
18 ms |
6864 KB |
Output is correct |
| 59 |
Correct |
19 ms |
6864 KB |
Output is correct |
| 60 |
Correct |
17 ms |
7376 KB |
Output is correct |
| 61 |
Correct |
17 ms |
7220 KB |
Output is correct |
| 62 |
Correct |
17 ms |
6864 KB |
Output is correct |
| 63 |
Correct |
18 ms |
7204 KB |
Output is correct |
| 64 |
Correct |
9 ms |
5720 KB |
Output is correct |
| 65 |
Correct |
10 ms |
5720 KB |
Output is correct |
| 66 |
Correct |
17 ms |
7376 KB |
Output is correct |
| 67 |
Correct |
14 ms |
7376 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
518 ms |
5720 KB |
Output is correct |
| 2 |
Correct |
656 ms |
4952 KB |
Output is correct |
| 3 |
Correct |
695 ms |
5720 KB |
Output is correct |
| 4 |
Correct |
687 ms |
5720 KB |
Output is correct |
| 5 |
Correct |
668 ms |
5720 KB |
Output is correct |
| 6 |
Correct |
670 ms |
5720 KB |
Output is correct |
| 7 |
Correct |
687 ms |
5720 KB |
Output is correct |
| 8 |
Correct |
646 ms |
5720 KB |
Output is correct |
| 9 |
Correct |
686 ms |
5720 KB |
Output is correct |
| 10 |
Correct |
641 ms |
5720 KB |
Output is correct |
| 11 |
Correct |
657 ms |
5972 KB |
Output is correct |
| 12 |
Correct |
725 ms |
4952 KB |
Output is correct |
| 13 |
Correct |
642 ms |
5720 KB |
Output is correct |
| 14 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 15 |
Correct |
1 ms |
4528 KB |
Output is correct |
| 16 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 17 |
Correct |
16 ms |
5720 KB |
Output is correct |
| 18 |
Correct |
9 ms |
5720 KB |
Output is correct |
| 19 |
Correct |
10 ms |
5820 KB |
Output is correct |
| 20 |
Correct |
9 ms |
4952 KB |
Output is correct |
| 21 |
Correct |
9 ms |
5820 KB |
Output is correct |
| 22 |
Correct |
10 ms |
4952 KB |
Output is correct |
| 23 |
Correct |
9 ms |
4960 KB |
Output is correct |
| 24 |
Correct |
10 ms |
5720 KB |
Output is correct |
| 25 |
Correct |
9 ms |
4952 KB |
Output is correct |
| 26 |
Correct |
10 ms |
5720 KB |
Output is correct |
| 27 |
Correct |
2 ms |
3724 KB |
Output is correct |
| 28 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 29 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 30 |
Correct |
1 ms |
4452 KB |
Output is correct |
| 31 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 32 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 33 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 34 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 35 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 36 |
Correct |
1 ms |
4440 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
4116 ms |
268016 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
4440 KB |
Output is correct |
| 2 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 3 |
Correct |
1 ms |
4528 KB |
Output is correct |
| 4 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 7 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 10 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 12 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 13 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 14 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 15 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 16 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 17 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 18 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 19 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 20 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 21 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 22 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 23 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 24 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 25 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 26 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 27 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 28 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 29 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 30 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 31 |
Correct |
2 ms |
3672 KB |
Output is correct |
| 32 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 33 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 34 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 35 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 36 |
Correct |
9 ms |
5464 KB |
Output is correct |
| 37 |
Correct |
14 ms |
5584 KB |
Output is correct |
| 38 |
Correct |
12 ms |
5720 KB |
Output is correct |
| 39 |
Correct |
18 ms |
5940 KB |
Output is correct |
| 40 |
Correct |
10 ms |
5720 KB |
Output is correct |
| 41 |
Correct |
15 ms |
6608 KB |
Output is correct |
| 42 |
Correct |
9 ms |
5720 KB |
Output is correct |
| 43 |
Correct |
16 ms |
5780 KB |
Output is correct |
| 44 |
Correct |
9 ms |
5720 KB |
Output is correct |
| 45 |
Correct |
10 ms |
5720 KB |
Output is correct |
| 46 |
Correct |
10 ms |
5720 KB |
Output is correct |
| 47 |
Correct |
10 ms |
5708 KB |
Output is correct |
| 48 |
Correct |
9 ms |
5720 KB |
Output is correct |
| 49 |
Correct |
15 ms |
5720 KB |
Output is correct |
| 50 |
Correct |
13 ms |
5708 KB |
Output is correct |
| 51 |
Correct |
9 ms |
5720 KB |
Output is correct |
| 52 |
Correct |
10 ms |
4952 KB |
Output is correct |
| 53 |
Correct |
10 ms |
5708 KB |
Output is correct |
| 54 |
Correct |
9 ms |
5712 KB |
Output is correct |
| 55 |
Correct |
13 ms |
5720 KB |
Output is correct |
| 56 |
Correct |
13 ms |
4952 KB |
Output is correct |
| 57 |
Correct |
18 ms |
6472 KB |
Output is correct |
| 58 |
Correct |
18 ms |
6864 KB |
Output is correct |
| 59 |
Correct |
19 ms |
6864 KB |
Output is correct |
| 60 |
Correct |
17 ms |
7376 KB |
Output is correct |
| 61 |
Correct |
17 ms |
7220 KB |
Output is correct |
| 62 |
Correct |
17 ms |
6864 KB |
Output is correct |
| 63 |
Correct |
18 ms |
7204 KB |
Output is correct |
| 64 |
Correct |
9 ms |
5720 KB |
Output is correct |
| 65 |
Correct |
10 ms |
5720 KB |
Output is correct |
| 66 |
Correct |
17 ms |
7376 KB |
Output is correct |
| 67 |
Correct |
14 ms |
7376 KB |
Output is correct |
| 68 |
Correct |
518 ms |
5720 KB |
Output is correct |
| 69 |
Correct |
656 ms |
4952 KB |
Output is correct |
| 70 |
Correct |
695 ms |
5720 KB |
Output is correct |
| 71 |
Correct |
687 ms |
5720 KB |
Output is correct |
| 72 |
Correct |
668 ms |
5720 KB |
Output is correct |
| 73 |
Correct |
670 ms |
5720 KB |
Output is correct |
| 74 |
Correct |
687 ms |
5720 KB |
Output is correct |
| 75 |
Correct |
646 ms |
5720 KB |
Output is correct |
| 76 |
Correct |
686 ms |
5720 KB |
Output is correct |
| 77 |
Correct |
641 ms |
5720 KB |
Output is correct |
| 78 |
Correct |
657 ms |
5972 KB |
Output is correct |
| 79 |
Correct |
725 ms |
4952 KB |
Output is correct |
| 80 |
Correct |
642 ms |
5720 KB |
Output is correct |
| 81 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 82 |
Correct |
1 ms |
4528 KB |
Output is correct |
| 83 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 84 |
Correct |
16 ms |
5720 KB |
Output is correct |
| 85 |
Correct |
9 ms |
5720 KB |
Output is correct |
| 86 |
Correct |
10 ms |
5820 KB |
Output is correct |
| 87 |
Correct |
9 ms |
4952 KB |
Output is correct |
| 88 |
Correct |
9 ms |
5820 KB |
Output is correct |
| 89 |
Correct |
10 ms |
4952 KB |
Output is correct |
| 90 |
Correct |
9 ms |
4960 KB |
Output is correct |
| 91 |
Correct |
10 ms |
5720 KB |
Output is correct |
| 92 |
Correct |
9 ms |
4952 KB |
Output is correct |
| 93 |
Correct |
10 ms |
5720 KB |
Output is correct |
| 94 |
Correct |
2 ms |
3724 KB |
Output is correct |
| 95 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 96 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 97 |
Correct |
1 ms |
4452 KB |
Output is correct |
| 98 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 99 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 100 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 101 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 102 |
Correct |
1 ms |
3672 KB |
Output is correct |
| 103 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 104 |
Execution timed out |
4105 ms |
67092 KB |
Time limit exceeded |
| 105 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
295 ms |
5208 KB |
2nd lines differ - on the 1st token, expected: '1', found: '2' |
| 2 |
Halted |
0 ms |
0 KB |
- |
