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Submission #1003206

# Submission time Handle Problem Language Result Execution time Memory
1003206 2024-06-20T07:48:14 Z vjudge1 Fire (BOI24_fire) C++17
100 / 100
 115 ms 45100 KB 
#include <bits/stdc++.h>

using namespace std;

const int LOG = 20;

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);

	int N, M; cin >> N >> M;
	vector<vector<pair<int, int>>> binlift(LOG, vector<pair<int, int>>(N));
	vector<pair<int, int>> inv(N);
	vector<int> s(N), e(N);
	for(int i = 0; i < N; i++){
		cin >> s[i] >> e[i];
		if(s[i] > e[i]) e[i] += M;
		inv[i] = {s[i], i};
	}
	sort(inv.begin(), inv.end());
	set<pair<int, int>> ending;
	for(auto [l, i] : inv){
		while(!ending.empty() && (*ending.begin()).first < l){
			binlift[0][(*ending.begin()).second] = *ending.rbegin();
			ending.erase(ending.begin());
		}
		ending.insert({e[i], i});
	}
	while(!ending.empty()){
		binlift[0][(*ending.begin()).second] = *ending.rbegin();
		ending.erase(ending.begin());
	}
	for(int k = 1; k < LOG; k++){
		for(int i = 0; i < N; i++){
			binlift[k][i] = binlift[k-1][binlift[k-1][i].second];
		}
	}
	// for(int k = 0; k < 3; k++){
	// 	cout << "K: "<< k << endl;
	// 	for(int i = 0; i < N; i++){
	// 		cout << "i "<< i << ": " << binlift[k][i].first << " "<< binlift[k][i].second << "\n";
	// 	}
	// }
	int ans = 1e9;
	for(int i = 0; i < N; i++){
		int curr = i;
		int currAns = 0;
		for(int k = LOG - 1; k >= 0; k--){
			if(binlift[k][curr].first >= M && binlift[k][curr].first - M >= s[i]){
				ans = min(ans, currAns + (1 << k));
			}else{
				currAns += (1 << k);
				curr = binlift[k][curr].second;
			}
		}
	}
	cout << (ans == 1e9 ? -1 : ans + 1) << "\n";
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 348 KB Output is correct
6 Correct 0 ms 456 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 600 KB Output is correct
9 Correct 0 ms 420 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 460 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 600 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 348 KB Output is correct
6 Correct 0 ms 456 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 600 KB Output is correct
9 Correct 0 ms 420 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 460 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 600 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 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 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 344 KB Output is correct
38 Correct 0 ms 348 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 348 KB Output is correct
6 Correct 0 ms 456 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 600 KB Output is correct
9 Correct 0 ms 420 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 460 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 600 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 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 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 344 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 2 ms 1372 KB Output is correct
40 Correct 2 ms 1416 KB Output is correct
41 Correct 2 ms 1372 KB Output is correct
42 Correct 1 ms 1232 KB Output is correct
43 Correct 2 ms 1408 KB Output is correct
44 Correct 2 ms 1372 KB Output is correct
45 Correct 3 ms 1372 KB Output is correct
46 Correct 2 ms 1372 KB Output is correct
47 Correct 2 ms 1420 KB Output is correct
48 Correct 2 ms 1624 KB Output is correct
49 Correct 1 ms 1112 KB Output is correct
50 Correct 1 ms 1244 KB Output is correct

Subtask #4
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 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 348 KB Output is correct
6 Correct 0 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 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 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 344 KB Output is correct
15 Correct 2 ms 1372 KB Output is correct
16 Correct 2 ms 1372 KB Output is correct
17 Correct 2 ms 1372 KB Output is correct
18 Correct 2 ms 1372 KB Output is correct
19 Correct 2 ms 1372 KB Output is correct
20 Correct 85 ms 44932 KB Output is correct
21 Correct 87 ms 38740 KB Output is correct
22 Correct 93 ms 38624 KB Output is correct
23 Correct 74 ms 37688 KB Output is correct
24 Correct 83 ms 38756 KB Output is correct
25 Correct 115 ms 40248 KB Output is correct
26 Correct 80 ms 38704 KB Output is correct
27 Correct 78 ms 38708 KB Output is correct
28 Correct 71 ms 38780 KB Output is correct

Subtask #5
21.0 / 21.0

# 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 0 ms 348 KB Output is correct
5 Correct 0 ms 456 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 512 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 2 ms 1372 KB Output is correct
13 Correct 1 ms 1372 KB Output is correct
14 Correct 2 ms 1372 KB Output is correct
15 Correct 74 ms 45100 KB Output is correct
16 Correct 66 ms 37768 KB Output is correct
17 Correct 75 ms 38632 KB Output is correct
18 Correct 83 ms 39520 KB Output is correct
19 Correct 75 ms 38712 KB Output is correct
20 Correct 66 ms 37684 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 348 KB Output is correct
6 Correct 0 ms 456 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 600 KB Output is correct
9 Correct 0 ms 420 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 460 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 600 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 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 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 344 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 2 ms 1372 KB Output is correct
40 Correct 2 ms 1416 KB Output is correct
41 Correct 2 ms 1372 KB Output is correct
42 Correct 1 ms 1232 KB Output is correct
43 Correct 2 ms 1408 KB Output is correct
44 Correct 2 ms 1372 KB Output is correct
45 Correct 3 ms 1372 KB Output is correct
46 Correct 2 ms 1372 KB Output is correct
47 Correct 2 ms 1420 KB Output is correct
48 Correct 2 ms 1624 KB Output is correct
49 Correct 1 ms 1112 KB Output is correct
50 Correct 1 ms 1244 KB Output is correct
51 Correct 0 ms 344 KB Output is correct
52 Correct 0 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 0 ms 348 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 0 ms 348 KB Output is correct
62 Correct 1 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 344 KB Output is correct
65 Correct 2 ms 1372 KB Output is correct
66 Correct 2 ms 1372 KB Output is correct
67 Correct 2 ms 1372 KB Output is correct
68 Correct 2 ms 1372 KB Output is correct
69 Correct 2 ms 1372 KB Output is correct
70 Correct 85 ms 44932 KB Output is correct
71 Correct 87 ms 38740 KB Output is correct
72 Correct 93 ms 38624 KB Output is correct
73 Correct 74 ms 37688 KB Output is correct
74 Correct 83 ms 38756 KB Output is correct
75 Correct 115 ms 40248 KB Output is correct
76 Correct 80 ms 38704 KB Output is correct
77 Correct 78 ms 38708 KB Output is correct
78 Correct 71 ms 38780 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 0 ms 348 KB Output is correct
81 Correct 0 ms 348 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 0 ms 456 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 1 ms 348 KB Output is correct
86 Correct 0 ms 348 KB Output is correct
87 Correct 0 ms 348 KB Output is correct
88 Correct 0 ms 512 KB Output is correct
89 Correct 0 ms 348 KB Output is correct
90 Correct 2 ms 1372 KB Output is correct
91 Correct 1 ms 1372 KB Output is correct
92 Correct 2 ms 1372 KB Output is correct
93 Correct 74 ms 45100 KB Output is correct
94 Correct 66 ms 37768 KB Output is correct
95 Correct 75 ms 38632 KB Output is correct
96 Correct 83 ms 39520 KB Output is correct
97 Correct 75 ms 38712 KB Output is correct
98 Correct 66 ms 37684 KB Output is correct
99 Correct 81 ms 38708 KB Output is correct
100 Correct 92 ms 38776 KB Output is correct
101 Correct 82 ms 38676 KB Output is correct
102 Correct 81 ms 38736 KB Output is correct
103 Correct 80 ms 38712 KB Output is correct
104 Correct 96 ms 38776 KB Output is correct
105 Correct 60 ms 37432 KB Output is correct