oj.uz

Submission #414716

# Submission time Handle Problem Language Result Execution time Memory
414716 2021-05-31T05:41:54 Z 장태환(#7553) Event Hopping 2 (JOI21_event2) C++17
39 / 100
 271 ms 24304 KB 
#include <iostream>
#include <algorithm>
#include <vector>
#include <set>
using namespace std;
int nex[200100][20];
int L[100100];
int R[100100];
int cur(int s, int e)
{
	int ans = 0;
	int i;
	for (i = 19; i >= 0; i--)
	{
		if (nex[s][i] <= e)
		{
			s = nex[s][i];
			ans += (1 << i);
		}
	}
	return ans;
}
int main()
{
	int N, M;
	cin >> N >> M;
	vector<int>a;
	int i;
	for (i = 0; i < N; i++)
	{
		cin >> L[i] >> R[i];
		a.push_back(L[i]);
		a.push_back(R[i]);
	}
	sort(a.begin(), a.end());
	a.erase(unique(a.begin(), a.end()), a.end());
	for (i = 0; i <= a.size()+1; i++)
		nex[i][0] = a.size();
	for (i = 0; i < N; i++)
	{
		L[i] = lower_bound(a.begin(), a.end(), L[i])-a.begin();
		R[i] = lower_bound(a.begin(), a.end(), R[i])-a.begin();
		nex[L[i]][0] = R[i];
	}
	for (i = a.size(); i >= 0; i--)
	{
		nex[i][0] = min(nex[i][0], nex[i+1][0] );
		int j;
		for (j =1;j<20; j++)
		{
			nex[i][j] = nex[nex[i][j-1]][j-1];
		}
	}
	int an = 0;
	set<pair<int, int>>s;
	s.insert({ 0,0 });
	s.insert({ a.size() - 1,a.size() - 1 });
	int no = cur(0, a.size() - 1);
	if (no < M)
	{
		cout << -1;
		return 0;
	}
	for (i = 0; i < N; i++)
	{
		int l = (*(--s.lower_bound(make_pair( R[i],0 )))).second;
		int r = (*(s.lower_bound(make_pair(R[i], 0)))).first;
		if (l > L[i])
			continue;
		int nno = no - cur(l, r) + cur(l, L[i]) + 1 + cur(R[i], r);
		if (nno >= M)
		{
			no = nno;
			cout << i + 1 << '\n';
			s.insert({ L[i],R[i] });
			an++;
			if (an == M)
				return 0;
		}
	}
}

Compilation message

event2.cpp: In function 'int main()':
event2.cpp:37:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |  for (i = 0; i <= a.size()+1; i++)
      |              ~~^~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 300 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 213 ms 24304 KB Output is correct
5 Correct 209 ms 24172 KB Output is correct
6 Correct 201 ms 23828 KB Output is correct
7 Correct 193 ms 23468 KB Output is correct
8 Correct 215 ms 24248 KB Output is correct
9 Correct 215 ms 24024 KB Output is correct
10 Correct 206 ms 23860 KB Output is correct
11 Correct 192 ms 23332 KB Output is correct
12 Correct 195 ms 22436 KB Output is correct
13 Correct 191 ms 22288 KB Output is correct
14 Correct 185 ms 22224 KB Output is correct
15 Correct 180 ms 21804 KB Output is correct
16 Correct 154 ms 20180 KB Output is correct
17 Correct 155 ms 19980 KB Output is correct
18 Correct 155 ms 19892 KB Output is correct
19 Correct 167 ms 19644 KB Output is correct
20 Correct 153 ms 19464 KB Output is correct
21 Correct 143 ms 19472 KB Output is correct
22 Correct 146 ms 19596 KB Output is correct
23 Correct 142 ms 19484 KB Output is correct
24 Correct 144 ms 19640 KB Output is correct
25 Correct 147 ms 19568 KB Output is correct
26 Correct 144 ms 19536 KB Output is correct
27 Correct 146 ms 19648 KB Output is correct
28 Correct 138 ms 19540 KB Output is correct
29 Correct 171 ms 19468 KB Output is correct
30 Correct 137 ms 19560 KB Output is correct
31 Correct 139 ms 19512 KB Output is correct
32 Correct 145 ms 19596 KB Output is correct
33 Correct 145 ms 19536 KB Output is correct
34 Correct 172 ms 21176 KB Output is correct
35 Correct 161 ms 20656 KB Output is correct
36 Correct 148 ms 19988 KB Output is correct
37 Correct 184 ms 22052 KB Output is correct
38 Correct 182 ms 22016 KB Output is correct
39 Correct 182 ms 21804 KB Output is correct
40 Correct 179 ms 21684 KB Output is correct
41 Correct 180 ms 21556 KB Output is correct
42 Correct 148 ms 19508 KB Output is correct
43 Correct 195 ms 21884 KB Output is correct
44 Correct 194 ms 21940 KB Output is correct
45 Correct 192 ms 21700 KB Output is correct
46 Correct 188 ms 21556 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 304 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 296 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 296 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 304 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 296 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 296 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 6 ms 844 KB Output is correct
29 Correct 5 ms 924 KB Output is correct
30 Correct 5 ms 844 KB Output is correct
31 Correct 5 ms 920 KB Output is correct
32 Correct 5 ms 844 KB Output is correct
33 Correct 5 ms 844 KB Output is correct
34 Correct 5 ms 820 KB Output is correct
35 Correct 7 ms 972 KB Output is correct
36 Correct 7 ms 952 KB Output is correct
37 Correct 7 ms 980 KB Output is correct
38 Correct 5 ms 928 KB Output is correct
39 Correct 7 ms 960 KB Output is correct
40 Correct 7 ms 960 KB Output is correct
41 Correct 7 ms 980 KB Output is correct
42 Correct 5 ms 852 KB Output is correct
43 Correct 6 ms 920 KB Output is correct
44 Correct 6 ms 828 KB Output is correct
45 Correct 6 ms 844 KB Output is correct
46 Correct 5 ms 820 KB Output is correct
47 Correct 6 ms 824 KB Output is correct
48 Correct 6 ms 852 KB Output is correct
49 Correct 6 ms 844 KB Output is correct
50 Correct 5 ms 844 KB Output is correct
51 Correct 6 ms 844 KB Output is correct
52 Correct 5 ms 912 KB Output is correct
53 Correct 5 ms 832 KB Output is correct
54 Correct 5 ms 896 KB Output is correct
55 Correct 6 ms 716 KB Output is correct
56 Correct 6 ms 716 KB Output is correct
57 Correct 6 ms 768 KB Output is correct
58 Correct 6 ms 816 KB Output is correct
59 Correct 6 ms 716 KB Output is correct
60 Correct 6 ms 716 KB Output is correct
61 Correct 6 ms 716 KB Output is correct
62 Correct 6 ms 700 KB Output is correct
63 Correct 6 ms 724 KB Output is correct
64 Correct 4 ms 588 KB Output is correct

Subtask #4
0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 300 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 213 ms 24304 KB Output is correct
5 Correct 209 ms 24172 KB Output is correct
6 Correct 201 ms 23828 KB Output is correct
7 Correct 193 ms 23468 KB Output is correct
8 Correct 215 ms 24248 KB Output is correct
9 Correct 215 ms 24024 KB Output is correct
10 Correct 206 ms 23860 KB Output is correct
11 Correct 192 ms 23332 KB Output is correct
12 Correct 195 ms 22436 KB Output is correct
13 Correct 191 ms 22288 KB Output is correct
14 Correct 185 ms 22224 KB Output is correct
15 Correct 180 ms 21804 KB Output is correct
16 Correct 154 ms 20180 KB Output is correct
17 Correct 155 ms 19980 KB Output is correct
18 Correct 155 ms 19892 KB Output is correct
19 Correct 167 ms 19644 KB Output is correct
20 Correct 153 ms 19464 KB Output is correct
21 Correct 143 ms 19472 KB Output is correct
22 Correct 146 ms 19596 KB Output is correct
23 Correct 142 ms 19484 KB Output is correct
24 Correct 144 ms 19640 KB Output is correct
25 Correct 147 ms 19568 KB Output is correct
26 Correct 144 ms 19536 KB Output is correct
27 Correct 146 ms 19648 KB Output is correct
28 Correct 138 ms 19540 KB Output is correct
29 Correct 171 ms 19468 KB Output is correct
30 Correct 137 ms 19560 KB Output is correct
31 Correct 139 ms 19512 KB Output is correct
32 Correct 145 ms 19596 KB Output is correct
33 Correct 145 ms 19536 KB Output is correct
34 Correct 172 ms 21176 KB Output is correct
35 Correct 161 ms 20656 KB Output is correct
36 Correct 148 ms 19988 KB Output is correct
37 Correct 184 ms 22052 KB Output is correct
38 Correct 182 ms 22016 KB Output is correct
39 Correct 182 ms 21804 KB Output is correct
40 Correct 179 ms 21684 KB Output is correct
41 Correct 180 ms 21556 KB Output is correct
42 Correct 148 ms 19508 KB Output is correct
43 Correct 195 ms 21884 KB Output is correct
44 Correct 194 ms 21940 KB Output is correct
45 Correct 192 ms 21700 KB Output is correct
46 Correct 188 ms 21556 KB Output is correct
47 Correct 1 ms 204 KB Output is correct
48 Correct 1 ms 204 KB Output is correct
49 Correct 1 ms 204 KB Output is correct
50 Correct 1 ms 204 KB Output is correct
51 Correct 1 ms 204 KB Output is correct
52 Correct 1 ms 204 KB Output is correct
53 Correct 1 ms 204 KB Output is correct
54 Correct 1 ms 204 KB Output is correct
55 Correct 1 ms 204 KB Output is correct
56 Correct 1 ms 304 KB Output is correct
57 Correct 1 ms 204 KB Output is correct
58 Correct 1 ms 204 KB Output is correct
59 Correct 1 ms 204 KB Output is correct
60 Correct 1 ms 204 KB Output is correct
61 Correct 1 ms 204 KB Output is correct
62 Correct 1 ms 204 KB Output is correct
63 Correct 1 ms 204 KB Output is correct
64 Correct 1 ms 204 KB Output is correct
65 Correct 1 ms 204 KB Output is correct
66 Correct 1 ms 296 KB Output is correct
67 Correct 1 ms 204 KB Output is correct
68 Correct 1 ms 204 KB Output is correct
69 Correct 1 ms 204 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 1 ms 296 KB Output is correct
72 Correct 1 ms 204 KB Output is correct
73 Correct 1 ms 204 KB Output is correct
74 Correct 6 ms 844 KB Output is correct
75 Correct 5 ms 924 KB Output is correct
76 Correct 5 ms 844 KB Output is correct
77 Correct 5 ms 920 KB Output is correct
78 Correct 5 ms 844 KB Output is correct
79 Correct 5 ms 844 KB Output is correct
80 Correct 5 ms 820 KB Output is correct
81 Correct 7 ms 972 KB Output is correct
82 Correct 7 ms 952 KB Output is correct
83 Correct 7 ms 980 KB Output is correct
84 Correct 5 ms 928 KB Output is correct
85 Correct 7 ms 960 KB Output is correct
86 Correct 7 ms 960 KB Output is correct
87 Correct 7 ms 980 KB Output is correct
88 Correct 5 ms 852 KB Output is correct
89 Correct 6 ms 920 KB Output is correct
90 Correct 6 ms 828 KB Output is correct
91 Correct 6 ms 844 KB Output is correct
92 Correct 5 ms 820 KB Output is correct
93 Correct 6 ms 824 KB Output is correct
94 Correct 6 ms 852 KB Output is correct
95 Correct 6 ms 844 KB Output is correct
96 Correct 5 ms 844 KB Output is correct
97 Correct 6 ms 844 KB Output is correct
98 Correct 5 ms 912 KB Output is correct
99 Correct 5 ms 832 KB Output is correct
100 Correct 5 ms 896 KB Output is correct
101 Correct 6 ms 716 KB Output is correct
102 Correct 6 ms 716 KB Output is correct
103 Correct 6 ms 768 KB Output is correct
104 Correct 6 ms 816 KB Output is correct
105 Correct 6 ms 716 KB Output is correct
106 Correct 6 ms 716 KB Output is correct
107 Correct 6 ms 716 KB Output is correct
108 Correct 6 ms 700 KB Output is correct
109 Correct 6 ms 724 KB Output is correct
110 Correct 4 ms 588 KB Output is correct
111 Correct 173 ms 19456 KB Output is correct
112 Correct 170 ms 19492 KB Output is correct
113 Correct 172 ms 19528 KB Output is correct
114 Correct 171 ms 19640 KB Output is correct
115 Correct 168 ms 19632 KB Output is correct
116 Correct 162 ms 19524 KB Output is correct
117 Correct 162 ms 19640 KB Output is correct
118 Correct 271 ms 24292 KB Output is correct
119 Correct 258 ms 23860 KB Output is correct
120 Correct 227 ms 21904 KB Output is correct
121 Correct 164 ms 19556 KB Output is correct
122 Correct 241 ms 22412 KB Output is correct
123 Correct 234 ms 22204 KB Output is correct
124 Correct 221 ms 21816 KB Output is correct
125 Correct 163 ms 19508 KB Output is correct
126 Incorrect 199 ms 20176 KB Output isn't correct
127 Halted 0 ms 0 KB -