oj.uz

Submission #1022879

# Submission time Handle Problem Language Result Execution time Memory
1022879 2024-07-14T07:04:19 Z vjudge1 Radio Towers (IOI22_towers) C++17
37 / 100
 4000 ms 511860 KB 
#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> pii;

const int maxn = 1e5 + 100;

int n;
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];
	}
	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(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;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4038 ms 511860 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4440 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 2 ms 4440 KB Output is correct
9 Correct 1 ms 4440 KB Output is correct
10 Correct 1 ms 4440 KB Output is correct
11 Correct 1 ms 3672 KB Output is correct
12 Correct 1 ms 3672 KB Output is correct
13 Correct 1 ms 4440 KB Output is correct
14 Correct 1 ms 4440 KB Output is correct
15 Correct 1 ms 4440 KB Output is correct
16 Correct 2 ms 4440 KB Output is correct
17 Correct 1 ms 4532 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 2 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 4440 KB Output is correct
25 Correct 1 ms 4440 KB Output is correct
26 Correct 1 ms 4440 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 3672 KB Output is correct
31 Correct 2 ms 3796 KB Output is correct
32 Correct 1 ms 4440 KB Output is correct
33 Correct 2 ms 4440 KB Output is correct
34 Correct 1 ms 4440 KB Output is correct
35 Correct 2 ms 3672 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4440 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 2 ms 4440 KB Output is correct
9 Correct 1 ms 4440 KB Output is correct
10 Correct 1 ms 4440 KB Output is correct
11 Correct 1 ms 3672 KB Output is correct
12 Correct 1 ms 3672 KB Output is correct
13 Correct 1 ms 4440 KB Output is correct
14 Correct 1 ms 4440 KB Output is correct
15 Correct 1 ms 4440 KB Output is correct
16 Correct 2 ms 4440 KB Output is correct
17 Correct 1 ms 4532 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 2 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 4440 KB Output is correct
25 Correct 1 ms 4440 KB Output is correct
26 Correct 1 ms 4440 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 3672 KB Output is correct
31 Correct 2 ms 3796 KB Output is correct
32 Correct 1 ms 4440 KB Output is correct
33 Correct 2 ms 4440 KB Output is correct
34 Correct 1 ms 4440 KB Output is correct
35 Correct 2 ms 3672 KB Output is correct
36 Correct 9 ms 5464 KB Output is correct
37 Correct 16 ms 5832 KB Output is correct
38 Correct 11 ms 5720 KB Output is correct
39 Correct 18 ms 5828 KB Output is correct
40 Correct 14 ms 5972 KB Output is correct
41 Correct 14 ms 6560 KB Output is correct
42 Correct 17 ms 5072 KB Output is correct
43 Correct 13 ms 6608 KB Output is correct
44 Correct 17 ms 5828 KB Output is correct
45 Correct 9 ms 5720 KB Output is correct
46 Correct 15 ms 5816 KB Output is correct
47 Correct 9 ms 5812 KB Output is correct
48 Correct 9 ms 5720 KB Output is correct
49 Correct 9 ms 5720 KB Output is correct
50 Correct 9 ms 5720 KB Output is correct
51 Correct 9 ms 5720 KB Output is correct
52 Correct 9 ms 5720 KB Output is correct
53 Correct 16 ms 5700 KB Output is correct
54 Correct 10 ms 5720 KB Output is correct
55 Correct 9 ms 5708 KB Output is correct
56 Correct 9 ms 5720 KB Output is correct
57 Correct 16 ms 6532 KB Output is correct
58 Correct 20 ms 6864 KB Output is correct
59 Correct 25 ms 6864 KB Output is correct
60 Correct 17 ms 7376 KB Output is correct
61 Correct 19 ms 7120 KB Output is correct
62 Correct 17 ms 6864 KB Output is correct
63 Correct 18 ms 7120 KB Output is correct
64 Correct 17 ms 7632 KB Output is correct
65 Correct 15 ms 7224 KB Output is correct
66 Correct 17 ms 7376 KB Output is correct
67 Correct 19 ms 7416 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 517 ms 5720 KB Output is correct
2 Correct 637 ms 5720 KB Output is correct
3 Correct 642 ms 5732 KB Output is correct
4 Correct 684 ms 5720 KB Output is correct
5 Correct 616 ms 5720 KB Output is correct
6 Correct 576 ms 5720 KB Output is correct
7 Correct 657 ms 5720 KB Output is correct
8 Correct 660 ms 5720 KB Output is correct
9 Correct 650 ms 5720 KB Output is correct
10 Correct 600 ms 5720 KB Output is correct
11 Correct 675 ms 4952 KB Output is correct
12 Correct 597 ms 5716 KB Output is correct
13 Correct 607 ms 5720 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 4440 KB Output is correct
17 Correct 9 ms 5704 KB Output is correct
18 Correct 16 ms 5720 KB Output is correct
19 Correct 10 ms 5720 KB Output is correct
20 Correct 9 ms 5720 KB Output is correct
21 Correct 9 ms 5720 KB Output is correct
22 Correct 11 ms 5712 KB Output is correct
23 Correct 10 ms 4956 KB Output is correct
24 Correct 10 ms 5816 KB Output is correct
25 Correct 10 ms 5720 KB Output is correct
26 Correct 9 ms 5808 KB Output is correct
27 Correct 1 ms 4440 KB Output is correct
28 Correct 1 ms 3672 KB Output is correct
29 Correct 1 ms 4528 KB Output is correct
30 Correct 1 ms 4440 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 4536 KB Output is correct
34 Correct 1 ms 4524 KB Output is correct
35 Correct 1 ms 4440 KB Output is correct
36 Correct 1 ms 4440 KB Output is correct

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4114 ms 267228 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4440 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 2 ms 4440 KB Output is correct
9 Correct 1 ms 4440 KB Output is correct
10 Correct 1 ms 4440 KB Output is correct
11 Correct 1 ms 3672 KB Output is correct
12 Correct 1 ms 3672 KB Output is correct
13 Correct 1 ms 4440 KB Output is correct
14 Correct 1 ms 4440 KB Output is correct
15 Correct 1 ms 4440 KB Output is correct
16 Correct 2 ms 4440 KB Output is correct
17 Correct 1 ms 4532 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 2 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 4440 KB Output is correct
25 Correct 1 ms 4440 KB Output is correct
26 Correct 1 ms 4440 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 3672 KB Output is correct
31 Correct 2 ms 3796 KB Output is correct
32 Correct 1 ms 4440 KB Output is correct
33 Correct 2 ms 4440 KB Output is correct
34 Correct 1 ms 4440 KB Output is correct
35 Correct 2 ms 3672 KB Output is correct
36 Correct 9 ms 5464 KB Output is correct
37 Correct 16 ms 5832 KB Output is correct
38 Correct 11 ms 5720 KB Output is correct
39 Correct 18 ms 5828 KB Output is correct
40 Correct 14 ms 5972 KB Output is correct
41 Correct 14 ms 6560 KB Output is correct
42 Correct 17 ms 5072 KB Output is correct
43 Correct 13 ms 6608 KB Output is correct
44 Correct 17 ms 5828 KB Output is correct
45 Correct 9 ms 5720 KB Output is correct
46 Correct 15 ms 5816 KB Output is correct
47 Correct 9 ms 5812 KB Output is correct
48 Correct 9 ms 5720 KB Output is correct
49 Correct 9 ms 5720 KB Output is correct
50 Correct 9 ms 5720 KB Output is correct
51 Correct 9 ms 5720 KB Output is correct
52 Correct 9 ms 5720 KB Output is correct
53 Correct 16 ms 5700 KB Output is correct
54 Correct 10 ms 5720 KB Output is correct
55 Correct 9 ms 5708 KB Output is correct
56 Correct 9 ms 5720 KB Output is correct
57 Correct 16 ms 6532 KB Output is correct
58 Correct 20 ms 6864 KB Output is correct
59 Correct 25 ms 6864 KB Output is correct
60 Correct 17 ms 7376 KB Output is correct
61 Correct 19 ms 7120 KB Output is correct
62 Correct 17 ms 6864 KB Output is correct
63 Correct 18 ms 7120 KB Output is correct
64 Correct 17 ms 7632 KB Output is correct
65 Correct 15 ms 7224 KB Output is correct
66 Correct 17 ms 7376 KB Output is correct
67 Correct 19 ms 7416 KB Output is correct
68 Correct 517 ms 5720 KB Output is correct
69 Correct 637 ms 5720 KB Output is correct
70 Correct 642 ms 5732 KB Output is correct
71 Correct 684 ms 5720 KB Output is correct
72 Correct 616 ms 5720 KB Output is correct
73 Correct 576 ms 5720 KB Output is correct
74 Correct 657 ms 5720 KB Output is correct
75 Correct 660 ms 5720 KB Output is correct
76 Correct 650 ms 5720 KB Output is correct
77 Correct 600 ms 5720 KB Output is correct
78 Correct 675 ms 4952 KB Output is correct
79 Correct 597 ms 5716 KB Output is correct
80 Correct 607 ms 5720 KB Output is correct
81 Correct 1 ms 4440 KB Output is correct
82 Correct 1 ms 4440 KB Output is correct
83 Correct 1 ms 4440 KB Output is correct
84 Correct 9 ms 5704 KB Output is correct
85 Correct 16 ms 5720 KB Output is correct
86 Correct 10 ms 5720 KB Output is correct
87 Correct 9 ms 5720 KB Output is correct
88 Correct 9 ms 5720 KB Output is correct
89 Correct 11 ms 5712 KB Output is correct
90 Correct 10 ms 4956 KB Output is correct
91 Correct 10 ms 5816 KB Output is correct
92 Correct 10 ms 5720 KB Output is correct
93 Correct 9 ms 5808 KB Output is correct
94 Correct 1 ms 4440 KB Output is correct
95 Correct 1 ms 3672 KB Output is correct
96 Correct 1 ms 4528 KB Output is correct
97 Correct 1 ms 4440 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 4536 KB Output is correct
101 Correct 1 ms 4524 KB Output is correct
102 Correct 1 ms 4440 KB Output is correct
103 Correct 1 ms 4440 KB Output is correct
104 Execution timed out 4011 ms 66328 KB Time limit exceeded
105 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4038 ms 511860 KB Time limit exceeded
2 Halted 0 ms 0 KB -