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Submission #1051492

# Submission time Handle Problem Language Result Execution time Memory
1051492 2024-08-10T07:32:09 Z MuhammadSaram Fire (BOI24_fire) C++17
100 / 100
 385 ms 45264 KB 
#include <bits/stdc++.h>

using namespace std;

int main()
{
	int n,m;
	cin>>n>>m;
	vector<pair<int,int>> op;
	set<int> se={0,m};
	int s[n],e[n];
	for (int i=0;i<n;i++)
	{
		cin>>s[i]>>e[i];
		se.insert(s[i]);
		se.insert(e[i]);
	}
	map<int,int> cmp;
	for (int i:se)
		cmp[i]=cmp.size();
	m=cmp.size();
	int mx[m+1]={};
	for (int i=0;i<n;i++)
	{
		s[i]=cmp[s[i]],e[i]=cmp[e[i]];
		if (s[i]>e[i])
			mx[s[i]]=m,op.push_back({s[i],e[i]});
		mx[s[i]]=max(mx[s[i]],e[i]);
	}
	if (op.empty())
	{
		cout<<-1<<endl;
		return 0;
	}
	for (int i=1;i<=m;i++)
		mx[i]=max(mx[i],mx[i-1]);
	int ans=-1;
	for (auto i:op)
	{
		int cnt=1,prt=i.second;
		while (prt<i.first)
		{
			if (mx[prt]<=prt)
				break;
			prt=mx[prt],cnt++;
		}
		if (prt>=i.first)
		{
			if (ans==-1)
				ans=cnt;
			ans=min(ans,cnt);
		}
	}
	cout<<ans<<endl;
	
	return 0;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 348 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 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 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 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 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 0 ms 348 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 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 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 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 1 ms 344 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 1 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 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 0 ms 348 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 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 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 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 1 ms 344 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 5 ms 1372 KB Output is correct
40 Correct 5 ms 1548 KB Output is correct
41 Correct 5 ms 1372 KB Output is correct
42 Correct 3 ms 856 KB Output is correct
43 Correct 4 ms 860 KB Output is correct
44 Correct 4 ms 860 KB Output is correct
45 Correct 4 ms 860 KB Output is correct
46 Correct 4 ms 856 KB Output is correct
47 Correct 5 ms 1372 KB Output is correct
48 Correct 5 ms 1372 KB Output is correct
49 Correct 3 ms 1372 KB Output is correct
50 Correct 3 ms 928 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 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 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 6 ms 1364 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 5 ms 860 KB Output is correct
18 Correct 4 ms 956 KB Output is correct
19 Correct 6 ms 1392 KB Output is correct
20 Correct 34 ms 3132 KB Output is correct
21 Correct 360 ms 44880 KB Output is correct
22 Correct 363 ms 44800 KB Output is correct
23 Correct 208 ms 24380 KB Output is correct
24 Correct 331 ms 44888 KB Output is correct
25 Correct 214 ms 21288 KB Output is correct
26 Correct 228 ms 25168 KB Output is correct
27 Correct 278 ms 25172 KB Output is correct
28 Correct 323 ms 44112 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 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1372 KB Output is correct
13 Correct 3 ms 860 KB Output is correct
14 Correct 3 ms 952 KB Output is correct
15 Correct 32 ms 3116 KB Output is correct
16 Correct 209 ms 24356 KB Output is correct
17 Correct 374 ms 44984 KB Output is correct
18 Correct 385 ms 45264 KB Output is correct
19 Correct 312 ms 44884 KB Output is correct
20 Correct 223 ms 24316 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 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 0 ms 348 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 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 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 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 1 ms 344 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 5 ms 1372 KB Output is correct
40 Correct 5 ms 1548 KB Output is correct
41 Correct 5 ms 1372 KB Output is correct
42 Correct 3 ms 856 KB Output is correct
43 Correct 4 ms 860 KB Output is correct
44 Correct 4 ms 860 KB Output is correct
45 Correct 4 ms 860 KB Output is correct
46 Correct 4 ms 856 KB Output is correct
47 Correct 5 ms 1372 KB Output is correct
48 Correct 5 ms 1372 KB Output is correct
49 Correct 3 ms 1372 KB Output is correct
50 Correct 3 ms 928 KB Output is correct
51 Correct 0 ms 348 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 0 ms 348 KB Output is correct
61 Correct 0 ms 348 KB Output is correct
62 Correct 0 ms 344 KB Output is correct
63 Correct 1 ms 348 KB Output is correct
64 Correct 0 ms 344 KB Output is correct
65 Correct 6 ms 1364 KB Output is correct
66 Correct 3 ms 860 KB Output is correct
67 Correct 5 ms 860 KB Output is correct
68 Correct 4 ms 956 KB Output is correct
69 Correct 6 ms 1392 KB Output is correct
70 Correct 34 ms 3132 KB Output is correct
71 Correct 360 ms 44880 KB Output is correct
72 Correct 363 ms 44800 KB Output is correct
73 Correct 208 ms 24380 KB Output is correct
74 Correct 331 ms 44888 KB Output is correct
75 Correct 214 ms 21288 KB Output is correct
76 Correct 228 ms 25168 KB Output is correct
77 Correct 278 ms 25172 KB Output is correct
78 Correct 323 ms 44112 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 0 ms 348 KB Output is correct
87 Correct 0 ms 348 KB Output is correct
88 Correct 0 ms 348 KB Output is correct
89 Correct 0 ms 348 KB Output is correct
90 Correct 5 ms 1372 KB Output is correct
91 Correct 3 ms 860 KB Output is correct
92 Correct 3 ms 952 KB Output is correct
93 Correct 32 ms 3116 KB Output is correct
94 Correct 209 ms 24356 KB Output is correct
95 Correct 374 ms 44984 KB Output is correct
96 Correct 385 ms 45264 KB Output is correct
97 Correct 312 ms 44884 KB Output is correct
98 Correct 223 ms 24316 KB Output is correct
99 Correct 331 ms 44752 KB Output is correct
100 Correct 380 ms 44880 KB Output is correct
101 Correct 334 ms 44924 KB Output is correct
102 Correct 361 ms 44884 KB Output is correct
103 Correct 237 ms 25176 KB Output is correct
104 Correct 312 ms 42916 KB Output is correct
105 Correct 193 ms 43604 KB Output is correct