oj.uz

Submission #1056595

# Submission time Handle Problem Language Result Execution time Memory
1056595 2024-08-13T10:12:21 Z parsadox2 Radio Towers (IOI22_towers) C++17
41 / 100
 4000 ms 24264 KB 
#include <bits/stdc++.h>
#include "towers.h"
 
using namespace std;
 
const int N = 1e5 + 10 , inf = 1e9 , Lg = 17;
 
int n , a[N] , rmxq[N][Lg] , rmnq[N][Lg] , lg2[N];
int b[N] , psum[N];
 
int mn_pos(int aa , int bb)
{
	if(a[aa] < a[bb])
		return aa;
	return bb;
}
 
int mx_pos(int aa , int bb)
{
	if(a[aa] > a[bb])
		return aa;
	return bb;
}
 
void Build()
{
	lg2[1] = 0;
	for(int i = 2 ; i < N ; i++)
		lg2[i] = lg2[i / 2] + 1;
	for(int i = 0 ; i < n ; i++)
		rmnq[i][0] = rmxq[i][0] = i;
	for(int j = 1 ; j < Lg ; j++)
	{
		int len = (1 << j);
		for(int i = 0 ; i + len <= n ; i++)
		{
			rmnq[i][j] = mn_pos(rmnq[i][j - 1] , rmnq[i + len / 2][j - 1]);
			rmxq[i][j] = mx_pos(rmxq[i][j - 1] , rmxq[i + len / 2][j - 1]);
		}
	}
	for(int i = 1 ; i + 1 < n ; i++)  if(a[i] > a[i - 1] && a[i] > a[i + 1])
		b[i] = 1;
	for(int i = 1 ; i < n ; i++)
		psum[i] = psum[i - 1] + b[i];
}
 
int Get_mx(int l , int r)
{
	r++;
	int sz = (r - l);  sz = lg2[sz];
	return mx_pos(rmxq[l][sz] , rmxq[r - (1 << sz)][sz]);
}
 
int Get_mn(int l , int r)
{
	r++;
	int sz = (r - l);  sz = lg2[sz];
	return mn_pos(rmnq[l][sz] , rmnq[r - (1 << sz)][sz]);
}
 
void init(int nn , vector <int> vec)
{
	n = nn;
	for(int i = 0 ; i < n ; i++)
		a[i] = vec[i];
	Build();
}
 
int Solve(int l , int r , int d)
{
	if(l > r)
		return 0;
	int pos_mx = Get_mx(l , r);
	int res = Solve(l , pos_mx - 1 , d) + Solve(pos_mx + 1 , r , d);
	if(pos_mx != l && pos_mx != r)
	{
		int lc = Get_mn(l , pos_mx - 1) , rc = Get_mn(pos_mx + 1 , r);
		if(a[pos_mx] - d >= a[lc] && a[pos_mx] - d >= a[rc])
			res++;
	}
	return res;
}
 
 
int max_towers(int l , int r , int d)
{
	if(d == 1)
	{
		if(l + 1 >= r)
			return 1;
		return 1 + psum[r - 1] - psum[l];
	}
	if(psum[r - 1] - psum[l] == 0)
		return 1;
	if(psum[r - 1] - psum[l] == 1)
	{
		int id = Get_mx(l , r);
		int lc = Get_mn(l , id - 1) , rc = Get_mn(id + 1 , r);
		if(a[id] - d >= a[lc] && a[id] - d >= a[rc])
			return 2;
		return 1;
	}
	return 1 + Solve(l , r , d);
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 235 ms 15448 KB Output is correct
2 Correct 488 ms 15960 KB Output is correct
3 Correct 516 ms 15960 KB Output is correct
4 Correct 507 ms 15960 KB Output is correct
5 Correct 519 ms 15960 KB Output is correct
6 Correct 523 ms 15960 KB Output is correct
7 Correct 471 ms 15960 KB Output is correct
8 Correct 1 ms 6488 KB Output is correct
9 Correct 1 ms 6600 KB Output is correct
10 Correct 1 ms 6488 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6608 KB Output is correct
3 Correct 1 ms 6488 KB Output is correct
4 Correct 1 ms 6488 KB Output is correct
5 Correct 1 ms 6488 KB Output is correct
6 Correct 1 ms 6648 KB Output is correct
7 Correct 1 ms 6488 KB Output is correct
8 Correct 1 ms 6488 KB Output is correct
9 Correct 1 ms 6608 KB Output is correct
10 Correct 1 ms 6488 KB Output is correct
11 Correct 1 ms 6488 KB Output is correct
12 Correct 1 ms 6488 KB Output is correct
13 Correct 1 ms 6488 KB Output is correct
14 Correct 1 ms 6488 KB Output is correct
15 Correct 1 ms 6488 KB Output is correct
16 Correct 1 ms 6488 KB Output is correct
17 Correct 1 ms 6488 KB Output is correct
18 Correct 1 ms 6488 KB Output is correct
19 Correct 1 ms 6488 KB Output is correct
20 Correct 1 ms 6488 KB Output is correct
21 Correct 1 ms 6488 KB Output is correct
22 Correct 1 ms 6488 KB Output is correct
23 Correct 1 ms 6488 KB Output is correct
24 Correct 1 ms 6592 KB Output is correct
25 Correct 1 ms 6488 KB Output is correct
26 Correct 1 ms 6488 KB Output is correct
27 Correct 1 ms 6488 KB Output is correct
28 Correct 1 ms 6488 KB Output is correct
29 Correct 1 ms 6488 KB Output is correct
30 Correct 1 ms 6488 KB Output is correct
31 Correct 1 ms 6488 KB Output is correct
32 Correct 1 ms 6488 KB Output is correct
33 Correct 1 ms 6488 KB Output is correct
34 Correct 1 ms 6744 KB Output is correct
35 Correct 1 ms 6744 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6608 KB Output is correct
3 Correct 1 ms 6488 KB Output is correct
4 Correct 1 ms 6488 KB Output is correct
5 Correct 1 ms 6488 KB Output is correct
6 Correct 1 ms 6648 KB Output is correct
7 Correct 1 ms 6488 KB Output is correct
8 Correct 1 ms 6488 KB Output is correct
9 Correct 1 ms 6608 KB Output is correct
10 Correct 1 ms 6488 KB Output is correct
11 Correct 1 ms 6488 KB Output is correct
12 Correct 1 ms 6488 KB Output is correct
13 Correct 1 ms 6488 KB Output is correct
14 Correct 1 ms 6488 KB Output is correct
15 Correct 1 ms 6488 KB Output is correct
16 Correct 1 ms 6488 KB Output is correct
17 Correct 1 ms 6488 KB Output is correct
18 Correct 1 ms 6488 KB Output is correct
19 Correct 1 ms 6488 KB Output is correct
20 Correct 1 ms 6488 KB Output is correct
21 Correct 1 ms 6488 KB Output is correct
22 Correct 1 ms 6488 KB Output is correct
23 Correct 1 ms 6488 KB Output is correct
24 Correct 1 ms 6592 KB Output is correct
25 Correct 1 ms 6488 KB Output is correct
26 Correct 1 ms 6488 KB Output is correct
27 Correct 1 ms 6488 KB Output is correct
28 Correct 1 ms 6488 KB Output is correct
29 Correct 1 ms 6488 KB Output is correct
30 Correct 1 ms 6488 KB Output is correct
31 Correct 1 ms 6488 KB Output is correct
32 Correct 1 ms 6488 KB Output is correct
33 Correct 1 ms 6488 KB Output is correct
34 Correct 1 ms 6744 KB Output is correct
35 Correct 1 ms 6744 KB Output is correct
36 Correct 9 ms 15448 KB Output is correct
37 Correct 18 ms 15924 KB Output is correct
38 Correct 13 ms 15960 KB Output is correct
39 Correct 13 ms 16056 KB Output is correct
40 Correct 13 ms 15960 KB Output is correct
41 Correct 14 ms 15948 KB Output is correct
42 Correct 12 ms 15960 KB Output is correct
43 Correct 13 ms 16048 KB Output is correct
44 Correct 14 ms 15960 KB Output is correct
45 Correct 12 ms 15952 KB Output is correct
46 Correct 13 ms 15960 KB Output is correct
47 Correct 14 ms 15960 KB Output is correct
48 Correct 12 ms 15916 KB Output is correct
49 Correct 12 ms 15944 KB Output is correct
50 Correct 12 ms 15960 KB Output is correct
51 Correct 12 ms 15948 KB Output is correct
52 Correct 19 ms 15960 KB Output is correct
53 Correct 14 ms 16056 KB Output is correct
54 Correct 20 ms 15960 KB Output is correct
55 Correct 12 ms 15960 KB Output is correct
56 Correct 18 ms 16040 KB Output is correct
57 Correct 14 ms 15960 KB Output is correct
58 Correct 14 ms 16056 KB Output is correct
59 Correct 21 ms 15960 KB Output is correct
60 Correct 14 ms 15960 KB Output is correct
61 Correct 14 ms 15960 KB Output is correct
62 Correct 20 ms 15960 KB Output is correct
63 Correct 20 ms 16052 KB Output is correct
64 Correct 13 ms 15924 KB Output is correct
65 Correct 12 ms 15960 KB Output is correct
66 Correct 20 ms 21292 KB Output is correct
67 Correct 17 ms 24264 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 384 ms 15960 KB Output is correct
2 Correct 468 ms 15960 KB Output is correct
3 Correct 493 ms 15948 KB Output is correct
4 Correct 563 ms 15960 KB Output is correct
5 Correct 503 ms 15960 KB Output is correct
6 Correct 554 ms 15948 KB Output is correct
7 Correct 474 ms 15960 KB Output is correct
8 Correct 549 ms 15960 KB Output is correct
9 Correct 460 ms 15960 KB Output is correct
10 Correct 519 ms 15960 KB Output is correct
11 Correct 547 ms 15960 KB Output is correct
12 Correct 520 ms 15960 KB Output is correct
13 Correct 533 ms 15960 KB Output is correct
14 Correct 1 ms 6488 KB Output is correct
15 Correct 1 ms 6488 KB Output is correct
16 Correct 1 ms 6488 KB Output is correct
17 Correct 13 ms 16056 KB Output is correct
18 Correct 12 ms 15924 KB Output is correct
19 Correct 15 ms 16056 KB Output is correct
20 Correct 15 ms 15924 KB Output is correct
21 Correct 12 ms 16056 KB Output is correct
22 Correct 14 ms 15960 KB Output is correct
23 Correct 13 ms 15960 KB Output is correct
24 Correct 13 ms 15948 KB Output is correct
25 Correct 13 ms 15952 KB Output is correct
26 Correct 12 ms 15960 KB Output is correct
27 Correct 1 ms 6488 KB Output is correct
28 Correct 1 ms 6488 KB Output is correct
29 Correct 1 ms 6488 KB Output is correct
30 Correct 1 ms 6488 KB Output is correct
31 Correct 1 ms 6488 KB Output is correct
32 Correct 1 ms 6488 KB Output is correct
33 Correct 1 ms 6488 KB Output is correct
34 Correct 1 ms 6488 KB Output is correct
35 Correct 1 ms 6488 KB Output is correct
36 Correct 1 ms 6488 KB Output is correct

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4059 ms 10840 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 6488 KB Output is correct
2 Correct 1 ms 6608 KB Output is correct
3 Correct 1 ms 6488 KB Output is correct
4 Correct 1 ms 6488 KB Output is correct
5 Correct 1 ms 6488 KB Output is correct
6 Correct 1 ms 6648 KB Output is correct
7 Correct 1 ms 6488 KB Output is correct
8 Correct 1 ms 6488 KB Output is correct
9 Correct 1 ms 6608 KB Output is correct
10 Correct 1 ms 6488 KB Output is correct
11 Correct 1 ms 6488 KB Output is correct
12 Correct 1 ms 6488 KB Output is correct
13 Correct 1 ms 6488 KB Output is correct
14 Correct 1 ms 6488 KB Output is correct
15 Correct 1 ms 6488 KB Output is correct
16 Correct 1 ms 6488 KB Output is correct
17 Correct 1 ms 6488 KB Output is correct
18 Correct 1 ms 6488 KB Output is correct
19 Correct 1 ms 6488 KB Output is correct
20 Correct 1 ms 6488 KB Output is correct
21 Correct 1 ms 6488 KB Output is correct
22 Correct 1 ms 6488 KB Output is correct
23 Correct 1 ms 6488 KB Output is correct
24 Correct 1 ms 6592 KB Output is correct
25 Correct 1 ms 6488 KB Output is correct
26 Correct 1 ms 6488 KB Output is correct
27 Correct 1 ms 6488 KB Output is correct
28 Correct 1 ms 6488 KB Output is correct
29 Correct 1 ms 6488 KB Output is correct
30 Correct 1 ms 6488 KB Output is correct
31 Correct 1 ms 6488 KB Output is correct
32 Correct 1 ms 6488 KB Output is correct
33 Correct 1 ms 6488 KB Output is correct
34 Correct 1 ms 6744 KB Output is correct
35 Correct 1 ms 6744 KB Output is correct
36 Correct 9 ms 15448 KB Output is correct
37 Correct 18 ms 15924 KB Output is correct
38 Correct 13 ms 15960 KB Output is correct
39 Correct 13 ms 16056 KB Output is correct
40 Correct 13 ms 15960 KB Output is correct
41 Correct 14 ms 15948 KB Output is correct
42 Correct 12 ms 15960 KB Output is correct
43 Correct 13 ms 16048 KB Output is correct
44 Correct 14 ms 15960 KB Output is correct
45 Correct 12 ms 15952 KB Output is correct
46 Correct 13 ms 15960 KB Output is correct
47 Correct 14 ms 15960 KB Output is correct
48 Correct 12 ms 15916 KB Output is correct
49 Correct 12 ms 15944 KB Output is correct
50 Correct 12 ms 15960 KB Output is correct
51 Correct 12 ms 15948 KB Output is correct
52 Correct 19 ms 15960 KB Output is correct
53 Correct 14 ms 16056 KB Output is correct
54 Correct 20 ms 15960 KB Output is correct
55 Correct 12 ms 15960 KB Output is correct
56 Correct 18 ms 16040 KB Output is correct
57 Correct 14 ms 15960 KB Output is correct
58 Correct 14 ms 16056 KB Output is correct
59 Correct 21 ms 15960 KB Output is correct
60 Correct 14 ms 15960 KB Output is correct
61 Correct 14 ms 15960 KB Output is correct
62 Correct 20 ms 15960 KB Output is correct
63 Correct 20 ms 16052 KB Output is correct
64 Correct 13 ms 15924 KB Output is correct
65 Correct 12 ms 15960 KB Output is correct
66 Correct 20 ms 21292 KB Output is correct
67 Correct 17 ms 24264 KB Output is correct
68 Correct 384 ms 15960 KB Output is correct
69 Correct 468 ms 15960 KB Output is correct
70 Correct 493 ms 15948 KB Output is correct
71 Correct 563 ms 15960 KB Output is correct
72 Correct 503 ms 15960 KB Output is correct
73 Correct 554 ms 15948 KB Output is correct
74 Correct 474 ms 15960 KB Output is correct
75 Correct 549 ms 15960 KB Output is correct
76 Correct 460 ms 15960 KB Output is correct
77 Correct 519 ms 15960 KB Output is correct
78 Correct 547 ms 15960 KB Output is correct
79 Correct 520 ms 15960 KB Output is correct
80 Correct 533 ms 15960 KB Output is correct
81 Correct 1 ms 6488 KB Output is correct
82 Correct 1 ms 6488 KB Output is correct
83 Correct 1 ms 6488 KB Output is correct
84 Correct 13 ms 16056 KB Output is correct
85 Correct 12 ms 15924 KB Output is correct
86 Correct 15 ms 16056 KB Output is correct
87 Correct 15 ms 15924 KB Output is correct
88 Correct 12 ms 16056 KB Output is correct
89 Correct 14 ms 15960 KB Output is correct
90 Correct 13 ms 15960 KB Output is correct
91 Correct 13 ms 15948 KB Output is correct
92 Correct 13 ms 15952 KB Output is correct
93 Correct 12 ms 15960 KB Output is correct
94 Correct 1 ms 6488 KB Output is correct
95 Correct 1 ms 6488 KB Output is correct
96 Correct 1 ms 6488 KB Output is correct
97 Correct 1 ms 6488 KB Output is correct
98 Correct 1 ms 6488 KB Output is correct
99 Correct 1 ms 6488 KB Output is correct
100 Correct 1 ms 6488 KB Output is correct
101 Correct 1 ms 6488 KB Output is correct
102 Correct 1 ms 6488 KB Output is correct
103 Correct 1 ms 6488 KB Output is correct
104 Execution timed out 4032 ms 15960 KB Time limit exceeded
105 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 235 ms 15448 KB Output is correct
2 Correct 488 ms 15960 KB Output is correct
3 Correct 516 ms 15960 KB Output is correct
4 Correct 507 ms 15960 KB Output is correct
5 Correct 519 ms 15960 KB Output is correct
6 Correct 523 ms 15960 KB Output is correct
7 Correct 471 ms 15960 KB Output is correct
8 Correct 1 ms 6488 KB Output is correct
9 Correct 1 ms 6600 KB Output is correct
10 Correct 1 ms 6488 KB Output is correct
11 Correct 1 ms 6488 KB Output is correct
12 Correct 1 ms 6608 KB Output is correct
13 Correct 1 ms 6488 KB Output is correct
14 Correct 1 ms 6488 KB Output is correct
15 Correct 1 ms 6488 KB Output is correct
16 Correct 1 ms 6648 KB Output is correct
17 Correct 1 ms 6488 KB Output is correct
18 Correct 1 ms 6488 KB Output is correct
19 Correct 1 ms 6608 KB Output is correct
20 Correct 1 ms 6488 KB Output is correct
21 Correct 1 ms 6488 KB Output is correct
22 Correct 1 ms 6488 KB Output is correct
23 Correct 1 ms 6488 KB Output is correct
24 Correct 1 ms 6488 KB Output is correct
25 Correct 1 ms 6488 KB Output is correct
26 Correct 1 ms 6488 KB Output is correct
27 Correct 1 ms 6488 KB Output is correct
28 Correct 1 ms 6488 KB Output is correct
29 Correct 1 ms 6488 KB Output is correct
30 Correct 1 ms 6488 KB Output is correct
31 Correct 1 ms 6488 KB Output is correct
32 Correct 1 ms 6488 KB Output is correct
33 Correct 1 ms 6488 KB Output is correct
34 Correct 1 ms 6592 KB Output is correct
35 Correct 1 ms 6488 KB Output is correct
36 Correct 1 ms 6488 KB Output is correct
37 Correct 1 ms 6488 KB Output is correct
38 Correct 1 ms 6488 KB Output is correct
39 Correct 1 ms 6488 KB Output is correct
40 Correct 1 ms 6488 KB Output is correct
41 Correct 1 ms 6488 KB Output is correct
42 Correct 1 ms 6488 KB Output is correct
43 Correct 1 ms 6488 KB Output is correct
44 Correct 1 ms 6744 KB Output is correct
45 Correct 1 ms 6744 KB Output is correct
46 Correct 9 ms 15448 KB Output is correct
47 Correct 18 ms 15924 KB Output is correct
48 Correct 13 ms 15960 KB Output is correct
49 Correct 13 ms 16056 KB Output is correct
50 Correct 13 ms 15960 KB Output is correct
51 Correct 14 ms 15948 KB Output is correct
52 Correct 12 ms 15960 KB Output is correct
53 Correct 13 ms 16048 KB Output is correct
54 Correct 14 ms 15960 KB Output is correct
55 Correct 12 ms 15952 KB Output is correct
56 Correct 13 ms 15960 KB Output is correct
57 Correct 14 ms 15960 KB Output is correct
58 Correct 12 ms 15916 KB Output is correct
59 Correct 12 ms 15944 KB Output is correct
60 Correct 12 ms 15960 KB Output is correct
61 Correct 12 ms 15948 KB Output is correct
62 Correct 19 ms 15960 KB Output is correct
63 Correct 14 ms 16056 KB Output is correct
64 Correct 20 ms 15960 KB Output is correct
65 Correct 12 ms 15960 KB Output is correct
66 Correct 18 ms 16040 KB Output is correct
67 Correct 14 ms 15960 KB Output is correct
68 Correct 14 ms 16056 KB Output is correct
69 Correct 21 ms 15960 KB Output is correct
70 Correct 14 ms 15960 KB Output is correct
71 Correct 14 ms 15960 KB Output is correct
72 Correct 20 ms 15960 KB Output is correct
73 Correct 20 ms 16052 KB Output is correct
74 Correct 13 ms 15924 KB Output is correct
75 Correct 12 ms 15960 KB Output is correct
76 Correct 20 ms 21292 KB Output is correct
77 Correct 17 ms 24264 KB Output is correct
78 Correct 384 ms 15960 KB Output is correct
79 Correct 468 ms 15960 KB Output is correct
80 Correct 493 ms 15948 KB Output is correct
81 Correct 563 ms 15960 KB Output is correct
82 Correct 503 ms 15960 KB Output is correct
83 Correct 554 ms 15948 KB Output is correct
84 Correct 474 ms 15960 KB Output is correct
85 Correct 549 ms 15960 KB Output is correct
86 Correct 460 ms 15960 KB Output is correct
87 Correct 519 ms 15960 KB Output is correct
88 Correct 547 ms 15960 KB Output is correct
89 Correct 520 ms 15960 KB Output is correct
90 Correct 533 ms 15960 KB Output is correct
91 Correct 1 ms 6488 KB Output is correct
92 Correct 1 ms 6488 KB Output is correct
93 Correct 1 ms 6488 KB Output is correct
94 Correct 13 ms 16056 KB Output is correct
95 Correct 12 ms 15924 KB Output is correct
96 Correct 15 ms 16056 KB Output is correct
97 Correct 15 ms 15924 KB Output is correct
98 Correct 12 ms 16056 KB Output is correct
99 Correct 14 ms 15960 KB Output is correct
100 Correct 13 ms 15960 KB Output is correct
101 Correct 13 ms 15948 KB Output is correct
102 Correct 13 ms 15952 KB Output is correct
103 Correct 12 ms 15960 KB Output is correct
104 Correct 1 ms 6488 KB Output is correct
105 Correct 1 ms 6488 KB Output is correct
106 Correct 1 ms 6488 KB Output is correct
107 Correct 1 ms 6488 KB Output is correct
108 Correct 1 ms 6488 KB Output is correct
109 Correct 1 ms 6488 KB Output is correct
110 Correct 1 ms 6488 KB Output is correct
111 Correct 1 ms 6488 KB Output is correct
112 Correct 1 ms 6488 KB Output is correct
113 Correct 1 ms 6488 KB Output is correct
114 Execution timed out 4059 ms 10840 KB Time limit exceeded
115 Halted 0 ms 0 KB -