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Submission #1033937

# Submission time Handle Problem Language Result Execution time Memory
1033937 2024-07-25T07:57:23 Z 정희우(#10973) Fire (BOI24_fire) C++17
100 / 100
 119 ms 44980 KB 
#include<iostream>
#include<algorithm>
#include<vector>

using namespace std;
using lint = long long;
using intp = pair<int,int>;
using vint = vector<int>;

const int MAX_N=200010;
const int BN=20;

struct Obj
{
    lint s,e;
    bool operator < (const Obj &o) const
    {
        return (s==o.s) ? e>o.e : s<o.s;
    }
};

int n;
lint m;
Obj pos[MAX_N];
vector<Obj> v;
int ac[MAX_N<<1][BN];

int main()
{
    ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
    cin >> n >> m;
    lint ge=0;
    for(int i=0;i<n;i++)
    {
        cin >> pos[i].s >> pos[i].e;
        if(pos[i].s>pos[i].e)
        {
            ge=max(ge,pos[i].e);
            pos[i].e+=m;
        }
    }
    sort(pos,pos+n);
    for(int i=0;i<n;i++)
        if(ge<pos[i].e && (v.empty() || v.back().e<pos[i].e))v.push_back(pos[i]);
    n=v.size();
    for(int i=0;i<n;i++)
        v.push_back({v[i].s+m,v[i].e+m});
    fill(ac[n*2-1],ac[n*2-1]+BN,n*2-1);
    for(int i=n*2-2;i>=0;i--)
    {
        int p=lower_bound(v.begin(),v.end(),(Obj){v[i].e,0})-v.begin()-1;
        if(p==i)
        {
            cout << -1;
            return 0;
        }
        ac[i][0]=p;
        for(int j=1;j<BN;j++)
            ac[i][j]=ac[ac[i][j-1]][j-1];
    }
    int ans=n;
    for(int i=0;i<n;i++)
    {
        int p=i,c=1;
        for(int j=BN-1;j>=0;j--)
            if(ac[p][j]<n+i)
            {
                p=ac[p][j];
                c+=1<<j;
            }
        ans=min(ans,c);
    }
    cout << ans;
    return 0;
}

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 472 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 344 KB Output is correct
9 Correct 0 ms 476 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 428 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 0 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 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 472 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 344 KB Output is correct
9 Correct 0 ms 476 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 428 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 0 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 1 ms 508 KB Output is correct
27 Correct 1 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 0 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 1 ms 348 KB Output is correct
34 Correct 1 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 468 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 472 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 344 KB Output is correct
9 Correct 0 ms 476 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 428 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 0 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 1 ms 508 KB Output is correct
27 Correct 1 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 0 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 1 ms 348 KB Output is correct
34 Correct 1 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 468 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 2 ms 604 KB Output is correct
40 Correct 2 ms 1504 KB Output is correct
41 Correct 3 ms 1504 KB Output is correct
42 Correct 2 ms 1504 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 2 ms 1504 KB Output is correct
45 Correct 3 ms 1504 KB Output is correct
46 Correct 4 ms 1504 KB Output is correct
47 Correct 1 ms 604 KB Output is correct
48 Correct 2 ms 652 KB Output is correct
49 Correct 2 ms 1112 KB Output is correct
50 Correct 2 ms 1504 KB Output is correct

Subtask #4
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 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 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 2 ms 1640 KB Output is correct
16 Correct 2 ms 1504 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 2 ms 1504 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 19 ms 4184 KB Output is correct
21 Correct 59 ms 12132 KB Output is correct
22 Correct 48 ms 10704 KB Output is correct
23 Correct 96 ms 43952 KB Output is correct
24 Correct 107 ms 36532 KB Output is correct
25 Correct 44 ms 6740 KB Output is correct
26 Correct 73 ms 26044 KB Output is correct
27 Correct 100 ms 44980 KB Output is correct
28 Correct 44 ms 10100 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 1 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 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 472 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 2 ms 1504 KB Output is correct
13 Correct 3 ms 1504 KB Output is correct
14 Correct 4 ms 1500 KB Output is correct
15 Correct 34 ms 4188 KB Output is correct
16 Correct 96 ms 43956 KB Output is correct
17 Correct 97 ms 44956 KB Output is correct
18 Correct 95 ms 44920 KB Output is correct
19 Correct 119 ms 44876 KB Output is correct
20 Correct 99 ms 43968 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 472 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 344 KB Output is correct
9 Correct 0 ms 476 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 428 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 0 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 1 ms 508 KB Output is correct
27 Correct 1 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 0 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 1 ms 348 KB Output is correct
34 Correct 1 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 468 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 2 ms 604 KB Output is correct
40 Correct 2 ms 1504 KB Output is correct
41 Correct 3 ms 1504 KB Output is correct
42 Correct 2 ms 1504 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 2 ms 1504 KB Output is correct
45 Correct 3 ms 1504 KB Output is correct
46 Correct 4 ms 1504 KB Output is correct
47 Correct 1 ms 604 KB Output is correct
48 Correct 2 ms 652 KB Output is correct
49 Correct 2 ms 1112 KB Output is correct
50 Correct 2 ms 1504 KB Output is correct
51 Correct 1 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 1 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 1 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 2 ms 1640 KB Output is correct
66 Correct 2 ms 1504 KB Output is correct
67 Correct 1 ms 604 KB Output is correct
68 Correct 2 ms 1504 KB Output is correct
69 Correct 1 ms 604 KB Output is correct
70 Correct 19 ms 4184 KB Output is correct
71 Correct 59 ms 12132 KB Output is correct
72 Correct 48 ms 10704 KB Output is correct
73 Correct 96 ms 43952 KB Output is correct
74 Correct 107 ms 36532 KB Output is correct
75 Correct 44 ms 6740 KB Output is correct
76 Correct 73 ms 26044 KB Output is correct
77 Correct 100 ms 44980 KB Output is correct
78 Correct 44 ms 10100 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 1 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 1 ms 348 KB Output is correct
86 Correct 0 ms 348 KB Output is correct
87 Correct 0 ms 472 KB Output is correct
88 Correct 1 ms 348 KB Output is correct
89 Correct 1 ms 348 KB Output is correct
90 Correct 2 ms 1504 KB Output is correct
91 Correct 3 ms 1504 KB Output is correct
92 Correct 4 ms 1500 KB Output is correct
93 Correct 34 ms 4188 KB Output is correct
94 Correct 96 ms 43956 KB Output is correct
95 Correct 97 ms 44956 KB Output is correct
96 Correct 95 ms 44920 KB Output is correct
97 Correct 119 ms 44876 KB Output is correct
98 Correct 99 ms 43968 KB Output is correct
99 Correct 49 ms 9600 KB Output is correct
100 Correct 49 ms 10884 KB Output is correct
101 Correct 98 ms 44428 KB Output is correct
102 Correct 87 ms 37812 KB Output is correct
103 Correct 101 ms 44916 KB Output is correct
104 Correct 50 ms 12588 KB Output is correct
105 Correct 53 ms 24940 KB Output is correct