oj.uz

Submission #966825

# Submission time Handle Problem Language Result Execution time Memory
966825 2024-04-20T12:36:04 Z Trisanu_Das Event Hopping 2 (JOI21_event2) C++17
39 / 100
 630 ms 524288 KB 
#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> ii;

int dptable[100000];
vector<ii> events;

int dp(int i) {
	if (i == events.size()) return 0;
	if (dptable[i] != -1) return dptable[i];
	return dptable[i] = max(dp(i + 1), dp(lower_bound(events.begin(), events.end(), ii(events[i].second, 0)) - events.begin()) + 1);
}
int main() {
	int N, K; cin >> N >> K;
	int L[N], R[N];
	for (int i = 0; i < N; ++i) cin >> L[i] >> R[i];
	if (N <= 3000) {
		vector<int> ans;
		bool can_use[N];
		fill_n(can_use, N, true);
		for (int i = 0; i < N; ++i) {
			if (!can_use[i]) continue;
			events.clear();
			events.push_back(ii(L[i], R[i]));
			for (int j = i + 1; j < N; ++j) 
              if (can_use[j] && (R[i] <= L[j] || R[j] <= L[i]))
                events.push_back(ii(L[j], R[j]));
			sort(events.begin(), events.end());
			fill_n(dptable, events.size(), -1);
			if (dp(0) + ans.size() >= K) {
				ans.push_back(i + 1);
				for (int j = i + 1; j < N; ++j)
					if (L[j] < R[i] && L[i] < R[j]) 
                      can_use[j] = false;
			}
		}
		if (ans.size() >= K)
			for (int i = 0; i < K; ++i) 
              printf("%d\n", ans[i]);
		else printf("-1");
	} else {
		for (int i = 0; i < N; ++i) events.push_back(ii(L[i], R[i]));
		fill_n(dptable, events.size(), -1);
		if (dp(0) >= K) {
			int cur = 0, ptr = 0;
			while (cur < K) {
				while (cur + dp(lower_bound(events.begin(), events.end(), ii(events[ptr].second, 0)) - events.begin()) + 1 < K) ++ptr;
				printf("%d\n", ptr + 1);
				ptr = lower_bound(events.begin(), events.end(), ii(events[ptr].second, 0)) - events.begin(), ++cur;
			}
		} else printf("-1");
	}
}

Compilation message

event2.cpp: In function 'int dp(int)':
event2.cpp:9:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |  if (i == events.size()) return 0;
      |      ~~^~~~~~~~~~~~~~~~
event2.cpp: In function 'int main()':
event2.cpp:30:27: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   30 |    if (dp(0) + ans.size() >= K) {
      |        ~~~~~~~~~~~~~~~~~~~^~~~
event2.cpp:37:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   37 |   if (ans.size() >= K)
      |       ~~~~~~~~~~~^~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 83 ms 10596 KB Output is correct
5 Correct 81 ms 10664 KB Output is correct
6 Correct 81 ms 10652 KB Output is correct
7 Correct 78 ms 10692 KB Output is correct
8 Correct 81 ms 10784 KB Output is correct
9 Correct 80 ms 10692 KB Output is correct
10 Correct 90 ms 10948 KB Output is correct
11 Correct 79 ms 10504 KB Output is correct
12 Correct 74 ms 8136 KB Output is correct
13 Correct 73 ms 8240 KB Output is correct
14 Correct 73 ms 8132 KB Output is correct
15 Correct 72 ms 8124 KB Output is correct
16 Correct 65 ms 5060 KB Output is correct
17 Correct 64 ms 5064 KB Output is correct
18 Correct 65 ms 5064 KB Output is correct
19 Correct 63 ms 4300 KB Output is correct
20 Correct 69 ms 4492 KB Output is correct
21 Correct 62 ms 4296 KB Output is correct
22 Correct 64 ms 4296 KB Output is correct
23 Correct 72 ms 4296 KB Output is correct
24 Correct 63 ms 4372 KB Output is correct
25 Correct 65 ms 4808 KB Output is correct
26 Correct 70 ms 4640 KB Output is correct
27 Correct 65 ms 4804 KB Output is correct
28 Correct 66 ms 10144 KB Output is correct
29 Correct 73 ms 7952 KB Output is correct
30 Correct 63 ms 5020 KB Output is correct
31 Correct 62 ms 4296 KB Output is correct
32 Correct 78 ms 4296 KB Output is correct
33 Correct 70 ms 4760 KB Output is correct
34 Correct 71 ms 8028 KB Output is correct
35 Correct 71 ms 8136 KB Output is correct
36 Correct 67 ms 7880 KB Output is correct
37 Correct 74 ms 7624 KB Output is correct
38 Correct 73 ms 7624 KB Output is correct
39 Correct 77 ms 8008 KB Output is correct
40 Correct 72 ms 7712 KB Output is correct
41 Correct 75 ms 7624 KB Output is correct
42 Correct 62 ms 4552 KB Output is correct
43 Correct 70 ms 5008 KB Output is correct
44 Correct 72 ms 4808 KB Output is correct
45 Correct 87 ms 5028 KB Output is correct
46 Correct 69 ms 4804 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 440 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 600 KB Output is correct
19 Correct 0 ms 448 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 4 ms 348 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 440 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 600 KB Output is correct
19 Correct 0 ms 448 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 4 ms 348 KB Output is correct
28 Correct 13 ms 344 KB Output is correct
29 Correct 10 ms 520 KB Output is correct
30 Correct 5 ms 348 KB Output is correct
31 Correct 3 ms 344 KB Output is correct
32 Correct 2 ms 348 KB Output is correct
33 Correct 163 ms 596 KB Output is correct
34 Correct 159 ms 348 KB Output is correct
35 Correct 452 ms 856 KB Output is correct
36 Correct 475 ms 752 KB Output is correct
37 Correct 368 ms 844 KB Output is correct
38 Correct 473 ms 852 KB Output is correct
39 Correct 380 ms 724 KB Output is correct
40 Correct 376 ms 604 KB Output is correct
41 Correct 368 ms 720 KB Output is correct
42 Correct 474 ms 724 KB Output is correct
43 Correct 164 ms 852 KB Output is correct
44 Correct 133 ms 604 KB Output is correct
45 Correct 111 ms 604 KB Output is correct
46 Correct 487 ms 624 KB Output is correct
47 Correct 69 ms 572 KB Output is correct
48 Correct 27 ms 600 KB Output is correct
49 Correct 16 ms 604 KB Output is correct
50 Correct 478 ms 604 KB Output is correct
51 Correct 62 ms 604 KB Output is correct
52 Correct 26 ms 348 KB Output is correct
53 Correct 4 ms 344 KB Output is correct
54 Correct 384 ms 596 KB Output is correct
55 Correct 292 ms 768 KB Output is correct
56 Correct 281 ms 768 KB Output is correct
57 Correct 294 ms 756 KB Output is correct
58 Correct 287 ms 772 KB Output is correct
59 Correct 287 ms 764 KB Output is correct
60 Correct 282 ms 600 KB Output is correct
61 Correct 290 ms 760 KB Output is correct
62 Correct 282 ms 760 KB Output is correct
63 Correct 281 ms 604 KB Output is correct
64 Correct 305 ms 764 KB Output is correct

Subtask #4
0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 83 ms 10596 KB Output is correct
5 Correct 81 ms 10664 KB Output is correct
6 Correct 81 ms 10652 KB Output is correct
7 Correct 78 ms 10692 KB Output is correct
8 Correct 81 ms 10784 KB Output is correct
9 Correct 80 ms 10692 KB Output is correct
10 Correct 90 ms 10948 KB Output is correct
11 Correct 79 ms 10504 KB Output is correct
12 Correct 74 ms 8136 KB Output is correct
13 Correct 73 ms 8240 KB Output is correct
14 Correct 73 ms 8132 KB Output is correct
15 Correct 72 ms 8124 KB Output is correct
16 Correct 65 ms 5060 KB Output is correct
17 Correct 64 ms 5064 KB Output is correct
18 Correct 65 ms 5064 KB Output is correct
19 Correct 63 ms 4300 KB Output is correct
20 Correct 69 ms 4492 KB Output is correct
21 Correct 62 ms 4296 KB Output is correct
22 Correct 64 ms 4296 KB Output is correct
23 Correct 72 ms 4296 KB Output is correct
24 Correct 63 ms 4372 KB Output is correct
25 Correct 65 ms 4808 KB Output is correct
26 Correct 70 ms 4640 KB Output is correct
27 Correct 65 ms 4804 KB Output is correct
28 Correct 66 ms 10144 KB Output is correct
29 Correct 73 ms 7952 KB Output is correct
30 Correct 63 ms 5020 KB Output is correct
31 Correct 62 ms 4296 KB Output is correct
32 Correct 78 ms 4296 KB Output is correct
33 Correct 70 ms 4760 KB Output is correct
34 Correct 71 ms 8028 KB Output is correct
35 Correct 71 ms 8136 KB Output is correct
36 Correct 67 ms 7880 KB Output is correct
37 Correct 74 ms 7624 KB Output is correct
38 Correct 73 ms 7624 KB Output is correct
39 Correct 77 ms 8008 KB Output is correct
40 Correct 72 ms 7712 KB Output is correct
41 Correct 75 ms 7624 KB Output is correct
42 Correct 62 ms 4552 KB Output is correct
43 Correct 70 ms 5008 KB Output is correct
44 Correct 72 ms 4808 KB Output is correct
45 Correct 87 ms 5028 KB Output is correct
46 Correct 69 ms 4804 KB Output is correct
47 Correct 0 ms 344 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 344 KB Output is correct
52 Correct 1 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 1 ms 348 KB Output is correct
56 Correct 0 ms 440 KB Output is correct
57 Correct 1 ms 344 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 1 ms 348 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 600 KB Output is correct
65 Correct 0 ms 448 KB Output is correct
66 Correct 0 ms 348 KB Output is correct
67 Correct 0 ms 348 KB Output is correct
68 Correct 1 ms 348 KB Output is correct
69 Correct 1 ms 344 KB Output is correct
70 Correct 1 ms 348 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 4 ms 348 KB Output is correct
74 Correct 13 ms 344 KB Output is correct
75 Correct 10 ms 520 KB Output is correct
76 Correct 5 ms 348 KB Output is correct
77 Correct 3 ms 344 KB Output is correct
78 Correct 2 ms 348 KB Output is correct
79 Correct 163 ms 596 KB Output is correct
80 Correct 159 ms 348 KB Output is correct
81 Correct 452 ms 856 KB Output is correct
82 Correct 475 ms 752 KB Output is correct
83 Correct 368 ms 844 KB Output is correct
84 Correct 473 ms 852 KB Output is correct
85 Correct 380 ms 724 KB Output is correct
86 Correct 376 ms 604 KB Output is correct
87 Correct 368 ms 720 KB Output is correct
88 Correct 474 ms 724 KB Output is correct
89 Correct 164 ms 852 KB Output is correct
90 Correct 133 ms 604 KB Output is correct
91 Correct 111 ms 604 KB Output is correct
92 Correct 487 ms 624 KB Output is correct
93 Correct 69 ms 572 KB Output is correct
94 Correct 27 ms 600 KB Output is correct
95 Correct 16 ms 604 KB Output is correct
96 Correct 478 ms 604 KB Output is correct
97 Correct 62 ms 604 KB Output is correct
98 Correct 26 ms 348 KB Output is correct
99 Correct 4 ms 344 KB Output is correct
100 Correct 384 ms 596 KB Output is correct
101 Correct 292 ms 768 KB Output is correct
102 Correct 281 ms 768 KB Output is correct
103 Correct 294 ms 756 KB Output is correct
104 Correct 287 ms 772 KB Output is correct
105 Correct 287 ms 764 KB Output is correct
106 Correct 282 ms 600 KB Output is correct
107 Correct 290 ms 760 KB Output is correct
108 Correct 282 ms 760 KB Output is correct
109 Correct 281 ms 604 KB Output is correct
110 Correct 305 ms 764 KB Output is correct
111 Runtime error 630 ms 524288 KB Execution killed with signal 9
112 Halted 0 ms 0 KB -