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Submission #1022036

# Submission time Handle Problem Language Result Execution time Memory
1022036 2024-07-13T09:18:06 Z huutuan Fire (BOI24_fire) C++14
100 / 100
 298 ms 139204 KB 
#include<bits/stdc++.h>

using namespace std;

#define int long long

const int N=1e6+10, LG=20;
int n, m;
pair<int, int> a[N];
int jump[LG][N];

int32_t main(){
   ios_base::sync_with_stdio(false);
   cin.tie(nullptr);
   cin >> n >> m;
   vector<int> v;
   for (int i=1; i<=n; ++i){
      cin >> a[i].first >> a[i].second;
      v.push_back(a[i].first);
      v.push_back(a[i].second);
      v.push_back(a[i].first+m);
      v.push_back(a[i].second+m);
      if (a[i].first>a[i].second) a[i].second+=m;
   }
   sort(v.begin(), v.end()); v.resize(unique(v.begin(), v.end())-v.begin());
   int _m=m;
   m=v.size();
   for (int i=0; i<m; ++i) jump[0][i]=i;
   for (int i=1; i<=n; ++i){
      int l=lower_bound(v.begin(), v.end(), a[i].first)-v.begin();
      jump[0][l]=max<int>(jump[0][l], lower_bound(v.begin(), v.end(), a[i].second)-v.begin());
   }
   for (int i=1; i<m; ++i) jump[0][i]=max(jump[0][i], jump[0][i-1]);
   for (int i=1; i<LG; ++i) for (int j=0; j<m; ++j) jump[i][j]=jump[i-1][jump[i-1][j]];
   int ans=1e9;
   for (int i=1; i<=n; ++i){
      int l=lower_bound(v.begin(), v.end(), a[i].first)-v.begin();
      int r=lower_bound(v.begin(), v.end(), a[i].first+_m)-v.begin();
      int cur=0;
      for (int j=LG-1; j>=0; --j) if (jump[j][l]<r){
         cur+=1<<j;
         l=jump[j][l];
      }
      ans=min(ans, cur+1);
   }
   cout << (ans>n?-1:ans) << '\n';
   return 0;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 464 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 1 ms 464 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 0 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 0 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 460 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 0 ms 604 KB Output is correct
21 Correct 0 ms 604 KB Output is correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 0 ms 604 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 464 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 1 ms 464 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 0 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 0 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 460 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 0 ms 604 KB Output is correct
21 Correct 0 ms 604 KB Output is correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 0 ms 604 KB Output is correct
24 Correct 1 ms 600 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 0 ms 604 KB Output is correct
27 Correct 1 ms 604 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 1 ms 604 KB Output is correct
30 Correct 1 ms 600 KB Output is correct
31 Correct 1 ms 604 KB Output is correct
32 Correct 1 ms 604 KB Output is correct
33 Correct 1 ms 604 KB Output is correct
34 Correct 1 ms 604 KB Output is correct
35 Correct 1 ms 604 KB Output is correct
36 Correct 1 ms 604 KB Output is correct
37 Correct 0 ms 604 KB Output is correct
38 Correct 1 ms 604 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 464 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 1 ms 464 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 0 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 0 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 460 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 0 ms 604 KB Output is correct
21 Correct 0 ms 604 KB Output is correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 0 ms 604 KB Output is correct
24 Correct 1 ms 600 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 0 ms 604 KB Output is correct
27 Correct 1 ms 604 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 1 ms 604 KB Output is correct
30 Correct 1 ms 600 KB Output is correct
31 Correct 1 ms 604 KB Output is correct
32 Correct 1 ms 604 KB Output is correct
33 Correct 1 ms 604 KB Output is correct
34 Correct 1 ms 604 KB Output is correct
35 Correct 1 ms 604 KB Output is correct
36 Correct 1 ms 604 KB Output is correct
37 Correct 0 ms 604 KB Output is correct
38 Correct 1 ms 604 KB Output is correct
39 Correct 7 ms 4568 KB Output is correct
40 Correct 5 ms 4064 KB Output is correct
41 Correct 5 ms 4192 KB Output is correct
42 Correct 4 ms 2528 KB Output is correct
43 Correct 4 ms 2272 KB Output is correct
44 Correct 6 ms 2528 KB Output is correct
45 Correct 4 ms 2528 KB Output is correct
46 Correct 4 ms 2528 KB Output is correct
47 Correct 5 ms 4064 KB Output is correct
48 Correct 6 ms 4064 KB Output is correct
49 Correct 4 ms 3960 KB Output is correct
50 Correct 4 ms 2528 KB Output is correct

Subtask #4
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 856 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 600 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 676 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 5 ms 4064 KB Output is correct
16 Correct 4 ms 2528 KB Output is correct
17 Correct 4 ms 2220 KB Output is correct
18 Correct 4 ms 2780 KB Output is correct
19 Correct 5 ms 4060 KB Output is correct
20 Correct 44 ms 11444 KB Output is correct
21 Correct 274 ms 139204 KB Output is correct
22 Correct 277 ms 139184 KB Output is correct
23 Correct 224 ms 75676 KB Output is correct
24 Correct 279 ms 139140 KB Output is correct
25 Correct 200 ms 63412 KB Output is correct
26 Correct 229 ms 76460 KB Output is correct
27 Correct 232 ms 76464 KB Output is correct
28 Correct 266 ms 135864 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 5 ms 4064 KB Output is correct
13 Correct 5 ms 2528 KB Output is correct
14 Correct 4 ms 2528 KB Output is correct
15 Correct 45 ms 11472 KB Output is correct
16 Correct 213 ms 75540 KB Output is correct
17 Correct 273 ms 139144 KB Output is correct
18 Correct 288 ms 139188 KB Output is correct
19 Correct 298 ms 139184 KB Output is correct
20 Correct 243 ms 75576 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 464 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 1 ms 464 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 0 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 0 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 460 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 0 ms 604 KB Output is correct
21 Correct 0 ms 604 KB Output is correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 0 ms 604 KB Output is correct
24 Correct 1 ms 600 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 0 ms 604 KB Output is correct
27 Correct 1 ms 604 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 1 ms 604 KB Output is correct
30 Correct 1 ms 600 KB Output is correct
31 Correct 1 ms 604 KB Output is correct
32 Correct 1 ms 604 KB Output is correct
33 Correct 1 ms 604 KB Output is correct
34 Correct 1 ms 604 KB Output is correct
35 Correct 1 ms 604 KB Output is correct
36 Correct 1 ms 604 KB Output is correct
37 Correct 0 ms 604 KB Output is correct
38 Correct 1 ms 604 KB Output is correct
39 Correct 7 ms 4568 KB Output is correct
40 Correct 5 ms 4064 KB Output is correct
41 Correct 5 ms 4192 KB Output is correct
42 Correct 4 ms 2528 KB Output is correct
43 Correct 4 ms 2272 KB Output is correct
44 Correct 6 ms 2528 KB Output is correct
45 Correct 4 ms 2528 KB Output is correct
46 Correct 4 ms 2528 KB Output is correct
47 Correct 5 ms 4064 KB Output is correct
48 Correct 6 ms 4064 KB Output is correct
49 Correct 4 ms 3960 KB Output is correct
50 Correct 4 ms 2528 KB Output is correct
51 Correct 0 ms 600 KB Output is correct
52 Correct 1 ms 604 KB Output is correct
53 Correct 1 ms 604 KB Output is correct
54 Correct 1 ms 604 KB Output is correct
55 Correct 1 ms 856 KB Output is correct
56 Correct 1 ms 604 KB Output is correct
57 Correct 1 ms 600 KB Output is correct
58 Correct 0 ms 604 KB Output is correct
59 Correct 0 ms 604 KB Output is correct
60 Correct 1 ms 604 KB Output is correct
61 Correct 1 ms 676 KB Output is correct
62 Correct 0 ms 604 KB Output is correct
63 Correct 0 ms 604 KB Output is correct
64 Correct 1 ms 604 KB Output is correct
65 Correct 5 ms 4064 KB Output is correct
66 Correct 4 ms 2528 KB Output is correct
67 Correct 4 ms 2220 KB Output is correct
68 Correct 4 ms 2780 KB Output is correct
69 Correct 5 ms 4060 KB Output is correct
70 Correct 44 ms 11444 KB Output is correct
71 Correct 274 ms 139204 KB Output is correct
72 Correct 277 ms 139184 KB Output is correct
73 Correct 224 ms 75676 KB Output is correct
74 Correct 279 ms 139140 KB Output is correct
75 Correct 200 ms 63412 KB Output is correct
76 Correct 229 ms 76460 KB Output is correct
77 Correct 232 ms 76464 KB Output is correct
78 Correct 266 ms 135864 KB Output is correct
79 Correct 0 ms 604 KB Output is correct
80 Correct 0 ms 604 KB Output is correct
81 Correct 0 ms 604 KB Output is correct
82 Correct 0 ms 604 KB Output is correct
83 Correct 0 ms 604 KB Output is correct
84 Correct 0 ms 604 KB Output is correct
85 Correct 0 ms 604 KB Output is correct
86 Correct 1 ms 604 KB Output is correct
87 Correct 0 ms 604 KB Output is correct
88 Correct 1 ms 604 KB Output is correct
89 Correct 1 ms 604 KB Output is correct
90 Correct 5 ms 4064 KB Output is correct
91 Correct 5 ms 2528 KB Output is correct
92 Correct 4 ms 2528 KB Output is correct
93 Correct 45 ms 11472 KB Output is correct
94 Correct 213 ms 75540 KB Output is correct
95 Correct 273 ms 139144 KB Output is correct
96 Correct 288 ms 139188 KB Output is correct
97 Correct 298 ms 139184 KB Output is correct
98 Correct 243 ms 75576 KB Output is correct
99 Correct 288 ms 139184 KB Output is correct
100 Correct 298 ms 139132 KB Output is correct
101 Correct 270 ms 139184 KB Output is correct
102 Correct 294 ms 139172 KB Output is correct
103 Correct 227 ms 76600 KB Output is correct
104 Correct 272 ms 132840 KB Output is correct
105 Correct 163 ms 137916 KB Output is correct