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Submission #1067016

# Submission time Handle Problem Language Result Execution time Memory
1067016 2024-08-20T09:40:29 Z 0npata Fire (BOI24_fire) C++17
100 / 100
 237 ms 91928 KB 
#include<bits/stdc++.h>
using namespace std;

#define int long long
#define vec vector

const int MXN = 200'005;
const int LOG = 20;
const int INF = 1e9;

int32_t main() {
	int N, M;
	cin >> N >> M;

	vec<pair<int, int>> rs(N);
	for(int i = 0; i<N; i++) {
		cin >> rs[i].first >> rs[i].second;
		if(rs[i].second < rs[i].first) rs[i].second += M;
	}

	sort(rs.begin(), rs.end());

	set<pair<int, int>> rightmost;
	vec<vec<pair<int, int>>> binjmps(N, vec<pair<int, int>>(LOG));


	for(int i = 0; i<N; i++) {
		rs.push_back({rs[i].first+M, rs[i].second+M});
	}

	int j = 0;
	for(int i = 0; i<N; i++) {
		while(rs[j].first <= rs[i].second) {
			rightmost.insert({rs[j].second, j});
		//	cerr << "J: " << j;
			 j++;
		}
		pair<int, int> r = *rightmost.rbegin();
		assert(r.first >= rs[i].second);
		binjmps[i][0] = {r.first-rs[i].second, r.second%N};
		//cerr << binjmps[i][0].first << ", " << binjmps[i][0].second << ';';
		rightmost.erase({rs[i].second, i});
	}

	//cerr << '\n';

	int mxlog = LOG;
	for(int i = 1; i<LOG && i<mxlog; i++) {
		for(int j = 0; j<N; j++) {
			int k = binjmps[j][i-1].second;
			binjmps[j][i].first = binjmps[j][i-1].first+binjmps[k][i-1].first;
			binjmps[j][i].second = binjmps[k][i-1].second;
			if(binjmps[j][i].first > M) {
				mxlog = i+1;
			}
		}
	}

	int ans = INF;

	for(int i = 0; i<N; i++) {
		int d = rs[i].second-rs[i].first;
		int cur = i;
		int res = 0;
		for(int j = mxlog-1; j>=0; j--) {
			int nd = binjmps[cur][j].first + d;
			if(nd < M) {
				d = nd;
				cur = binjmps[cur][j].second;
				res += (1<<j);
			}
		}
		res += 1;
		d += binjmps[cur][0].first;
		if(d >= M) {
			ans = min(ans, res+1);
		}
	}

	if(ans == INF) cout << -1 << '\n';
	else {
		cout << ans << '\n';
	}
}

Subtask #1
14.0 / 14.0

# 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 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 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 404 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 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 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 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 404 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 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 1 ms 348 KB Output is correct
30 Correct 0 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 1 ms 344 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 508 KB Output is correct
37 Correct 0 ms 348 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 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 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 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 404 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 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 1 ms 348 KB Output is correct
30 Correct 0 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 1 ms 344 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 508 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 5 ms 2396 KB Output is correct
40 Correct 4 ms 2396 KB Output is correct
41 Correct 4 ms 2396 KB Output is correct
42 Correct 4 ms 2396 KB Output is correct
43 Correct 5 ms 2396 KB Output is correct
44 Correct 4 ms 2396 KB Output is correct
45 Correct 4 ms 2304 KB Output is correct
46 Correct 4 ms 2396 KB Output is correct
47 Correct 5 ms 2396 KB Output is correct
48 Correct 4 ms 2396 KB Output is correct
49 Correct 3 ms 2396 KB Output is correct
50 Correct 4 ms 2396 KB Output is correct

Subtask #4
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 344 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 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 4 ms 2396 KB Output is correct
16 Correct 3 ms 2304 KB Output is correct
17 Correct 5 ms 2396 KB Output is correct
18 Correct 4 ms 2396 KB Output is correct
19 Correct 4 ms 2396 KB Output is correct
20 Correct 141 ms 89628 KB Output is correct
21 Correct 207 ms 81924 KB Output is correct
22 Correct 189 ms 82768 KB Output is correct
23 Correct 195 ms 79956 KB Output is correct
24 Correct 202 ms 82364 KB Output is correct
25 Correct 237 ms 91928 KB Output is correct
26 Correct 212 ms 82656 KB Output is correct
27 Correct 226 ms 81616 KB Output is correct
28 Correct 205 ms 81492 KB Output is correct

Subtask #5
21.0 / 21.0

# 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 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 4 ms 2396 KB Output is correct
13 Correct 4 ms 2396 KB Output is correct
14 Correct 3 ms 2304 KB Output is correct
15 Correct 157 ms 89536 KB Output is correct
16 Correct 211 ms 82000 KB Output is correct
17 Correct 194 ms 80856 KB Output is correct
18 Correct 181 ms 82204 KB Output is correct
19 Correct 202 ms 82256 KB Output is correct
20 Correct 194 ms 81488 KB Output is correct

Subtask #6
26.0 / 26.0

# 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 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 0 ms 348 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 404 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 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 1 ms 348 KB Output is correct
30 Correct 0 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 1 ms 344 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 508 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 5 ms 2396 KB Output is correct
40 Correct 4 ms 2396 KB Output is correct
41 Correct 4 ms 2396 KB Output is correct
42 Correct 4 ms 2396 KB Output is correct
43 Correct 5 ms 2396 KB Output is correct
44 Correct 4 ms 2396 KB Output is correct
45 Correct 4 ms 2304 KB Output is correct
46 Correct 4 ms 2396 KB Output is correct
47 Correct 5 ms 2396 KB Output is correct
48 Correct 4 ms 2396 KB Output is correct
49 Correct 3 ms 2396 KB Output is correct
50 Correct 4 ms 2396 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 344 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 1 ms 344 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 1 ms 348 KB Output is correct
62 Correct 0 ms 344 KB Output is correct
63 Correct 1 ms 344 KB Output is correct
64 Correct 0 ms 344 KB Output is correct
65 Correct 4 ms 2396 KB Output is correct
66 Correct 3 ms 2304 KB Output is correct
67 Correct 5 ms 2396 KB Output is correct
68 Correct 4 ms 2396 KB Output is correct
69 Correct 4 ms 2396 KB Output is correct
70 Correct 141 ms 89628 KB Output is correct
71 Correct 207 ms 81924 KB Output is correct
72 Correct 189 ms 82768 KB Output is correct
73 Correct 195 ms 79956 KB Output is correct
74 Correct 202 ms 82364 KB Output is correct
75 Correct 237 ms 91928 KB Output is correct
76 Correct 212 ms 82656 KB Output is correct
77 Correct 226 ms 81616 KB Output is correct
78 Correct 205 ms 81492 KB Output is correct
79 Correct 0 ms 344 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 348 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 0 ms 348 KB Output is correct
86 Correct 1 ms 348 KB Output is correct
87 Correct 1 ms 348 KB Output is correct
88 Correct 1 ms 348 KB Output is correct
89 Correct 1 ms 348 KB Output is correct
90 Correct 4 ms 2396 KB Output is correct
91 Correct 4 ms 2396 KB Output is correct
92 Correct 3 ms 2304 KB Output is correct
93 Correct 157 ms 89536 KB Output is correct
94 Correct 211 ms 82000 KB Output is correct
95 Correct 194 ms 80856 KB Output is correct
96 Correct 181 ms 82204 KB Output is correct
97 Correct 202 ms 82256 KB Output is correct
98 Correct 194 ms 81488 KB Output is correct
99 Correct 208 ms 82520 KB Output is correct
100 Correct 210 ms 81492 KB Output is correct
101 Correct 226 ms 81628 KB Output is correct
102 Correct 197 ms 81744 KB Output is correct
103 Correct 200 ms 81232 KB Output is correct
104 Correct 195 ms 82648 KB Output is correct
105 Correct 169 ms 80224 KB Output is correct