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Submission #1084642

# Submission time Handle Problem Language Result Execution time Memory
1084642 2024-09-06T15:25:04 Z vjudge1 Fire (BOI24_fire) C++17
100 / 100
 770 ms 67880 KB 
#include<bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC target("avx2")
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define plx pair<ll,int>
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(),x.end()
#define vi vector<int>
#define vl vector<ll>
#define vvi vector<vi>
using namespace std;
const int mxn=4e5+5;
struct mxtree{
    int t[2*mxn]{0};
    void upd(int i,int amt,int sz){
        i+=sz;t[i]=max(t[i],amt);
        for(i>>=1;i;i>>=1)t[i]=max(t[2*i],t[2*i+1]);
    }
    int qr(int l,int r,int sz,int res=0){
        for(l+=sz,r+=sz;l<r;l>>=1,r>>=1){
            if(l&1)res=max(res,t[l++]);
            if(r&1)res=max(res,t[--r]);
        }return res;
    }
}sg[20];int s[mxn],e[mxn];
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    int n,m;cin>>n>>m;vector<int>v;
    for(int i=0;i<n;i++)cin>>s[i]>>e[i],v.pb(s[i]),v.pb(e[i]);
    sort(all(v));v.erase(unique(all(v)),v.end());int x=v.size();
    for(int i=0;i<n;i++)s[i]=lower_bound(all(v),s[i])-v.begin(),e[i]=lower_bound(all(v),e[i])-v.begin();
    for(int i=0;i<n;i++)if(s[i]<=e[i])sg[0].upd(s[i],e[i],x);
    for(int i=0;i<x;i++)sg[0].upd(i,sg[0].qr(0,i,x),x);
    for(int i=1;i<20;i++){
        for(int j=0;j<x;j++)sg[i].upd(j,sg[i-1].qr(j,sg[i-1].t[j+x]+1,x),x);
    }int ans=2e9;
    for(int i=0;i<n;i++){
        if(s[i]<=e[i])continue;
        int rs=0;int u=e[i];
        for(int j=19;j>=0;j--){
            if(sg[j].t[u+x]<s[i])rs+=(1<<j),u=sg[j].t[u+x];
        }
        if(sg[0].t[u+x]<s[i])continue;
        ans=min(ans,rs+2);
    }cout<<(ans==2e9?-1:ans);
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2648 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 1 ms 2652 KB Output is correct
8 Correct 1 ms 2648 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 0 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct
17 Correct 1 ms 2652 KB Output is correct
18 Correct 1 ms 2652 KB Output is correct
19 Correct 1 ms 2648 KB Output is correct
20 Correct 1 ms 2652 KB Output is correct
21 Correct 1 ms 2652 KB Output is correct
22 Correct 1 ms 2652 KB Output is correct
23 Correct 1 ms 2652 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2648 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 1 ms 2652 KB Output is correct
8 Correct 1 ms 2648 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 0 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct
17 Correct 1 ms 2652 KB Output is correct
18 Correct 1 ms 2652 KB Output is correct
19 Correct 1 ms 2648 KB Output is correct
20 Correct 1 ms 2652 KB Output is correct
21 Correct 1 ms 2652 KB Output is correct
22 Correct 1 ms 2652 KB Output is correct
23 Correct 1 ms 2652 KB Output is correct
24 Correct 1 ms 2648 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 1 ms 2652 KB Output is correct
28 Correct 1 ms 2652 KB Output is correct
29 Correct 1 ms 2652 KB Output is correct
30 Correct 1 ms 2652 KB Output is correct
31 Correct 1 ms 2652 KB Output is correct
32 Correct 1 ms 2652 KB Output is correct
33 Correct 1 ms 2648 KB Output is correct
34 Correct 1 ms 2652 KB Output is correct
35 Correct 1 ms 2652 KB Output is correct
36 Correct 2 ms 2652 KB Output is correct
37 Correct 1 ms 2652 KB Output is correct
38 Correct 1 ms 2652 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2648 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 1 ms 2652 KB Output is correct
8 Correct 1 ms 2648 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 0 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct
17 Correct 1 ms 2652 KB Output is correct
18 Correct 1 ms 2652 KB Output is correct
19 Correct 1 ms 2648 KB Output is correct
20 Correct 1 ms 2652 KB Output is correct
21 Correct 1 ms 2652 KB Output is correct
22 Correct 1 ms 2652 KB Output is correct
23 Correct 1 ms 2652 KB Output is correct
24 Correct 1 ms 2648 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 1 ms 2652 KB Output is correct
28 Correct 1 ms 2652 KB Output is correct
29 Correct 1 ms 2652 KB Output is correct
30 Correct 1 ms 2652 KB Output is correct
31 Correct 1 ms 2652 KB Output is correct
32 Correct 1 ms 2652 KB Output is correct
33 Correct 1 ms 2648 KB Output is correct
34 Correct 1 ms 2652 KB Output is correct
35 Correct 1 ms 2652 KB Output is correct
36 Correct 2 ms 2652 KB Output is correct
37 Correct 1 ms 2652 KB Output is correct
38 Correct 1 ms 2652 KB Output is correct
39 Correct 16 ms 4184 KB Output is correct
40 Correct 14 ms 4316 KB Output is correct
41 Correct 16 ms 4276 KB Output is correct
42 Correct 7 ms 3420 KB Output is correct
43 Correct 7 ms 3420 KB Output is correct
44 Correct 7 ms 3420 KB Output is correct
45 Correct 7 ms 3496 KB Output is correct
46 Correct 7 ms 3420 KB Output is correct
47 Correct 15 ms 4188 KB Output is correct
48 Correct 15 ms 4188 KB Output is correct
49 Correct 13 ms 4188 KB Output is correct
50 Correct 8 ms 3380 KB Output is correct

Subtask #4
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2652 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 1 ms 2652 KB Output is correct
8 Correct 1 ms 2652 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2648 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 15 ms 4236 KB Output is correct
16 Correct 8 ms 3420 KB Output is correct
17 Correct 7 ms 3264 KB Output is correct
18 Correct 7 ms 3420 KB Output is correct
19 Correct 15 ms 4336 KB Output is correct
20 Correct 32 ms 4824 KB Output is correct
21 Correct 739 ms 67020 KB Output is correct
22 Correct 736 ms 67644 KB Output is correct
23 Correct 340 ms 36664 KB Output is correct
24 Correct 696 ms 67784 KB Output is correct
25 Correct 358 ms 30404 KB Output is correct
26 Correct 381 ms 36552 KB Output is correct
27 Correct 332 ms 36552 KB Output is correct
28 Correct 695 ms 66340 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2648 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 1 ms 2652 KB Output is correct
8 Correct 1 ms 2652 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 19 ms 4348 KB Output is correct
13 Correct 7 ms 3420 KB Output is correct
14 Correct 7 ms 3344 KB Output is correct
15 Correct 27 ms 6356 KB Output is correct
16 Correct 319 ms 35780 KB Output is correct
17 Correct 764 ms 67664 KB Output is correct
18 Correct 770 ms 67784 KB Output is correct
19 Correct 670 ms 67780 KB Output is correct
20 Correct 354 ms 36544 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2648 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 1 ms 2652 KB Output is correct
8 Correct 1 ms 2648 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 0 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct
17 Correct 1 ms 2652 KB Output is correct
18 Correct 1 ms 2652 KB Output is correct
19 Correct 1 ms 2648 KB Output is correct
20 Correct 1 ms 2652 KB Output is correct
21 Correct 1 ms 2652 KB Output is correct
22 Correct 1 ms 2652 KB Output is correct
23 Correct 1 ms 2652 KB Output is correct
24 Correct 1 ms 2648 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 1 ms 2652 KB Output is correct
28 Correct 1 ms 2652 KB Output is correct
29 Correct 1 ms 2652 KB Output is correct
30 Correct 1 ms 2652 KB Output is correct
31 Correct 1 ms 2652 KB Output is correct
32 Correct 1 ms 2652 KB Output is correct
33 Correct 1 ms 2648 KB Output is correct
34 Correct 1 ms 2652 KB Output is correct
35 Correct 1 ms 2652 KB Output is correct
36 Correct 2 ms 2652 KB Output is correct
37 Correct 1 ms 2652 KB Output is correct
38 Correct 1 ms 2652 KB Output is correct
39 Correct 16 ms 4184 KB Output is correct
40 Correct 14 ms 4316 KB Output is correct
41 Correct 16 ms 4276 KB Output is correct
42 Correct 7 ms 3420 KB Output is correct
43 Correct 7 ms 3420 KB Output is correct
44 Correct 7 ms 3420 KB Output is correct
45 Correct 7 ms 3496 KB Output is correct
46 Correct 7 ms 3420 KB Output is correct
47 Correct 15 ms 4188 KB Output is correct
48 Correct 15 ms 4188 KB Output is correct
49 Correct 13 ms 4188 KB Output is correct
50 Correct 8 ms 3380 KB Output is correct
51 Correct 1 ms 2652 KB Output is correct
52 Correct 1 ms 2652 KB Output is correct
53 Correct 1 ms 2652 KB Output is correct
54 Correct 1 ms 2652 KB Output is correct
55 Correct 1 ms 2652 KB Output is correct
56 Correct 1 ms 2652 KB Output is correct
57 Correct 1 ms 2652 KB Output is correct
58 Correct 1 ms 2652 KB Output is correct
59 Correct 1 ms 2652 KB Output is correct
60 Correct 1 ms 2648 KB Output is correct
61 Correct 1 ms 2652 KB Output is correct
62 Correct 1 ms 2652 KB Output is correct
63 Correct 1 ms 2652 KB Output is correct
64 Correct 1 ms 2652 KB Output is correct
65 Correct 15 ms 4236 KB Output is correct
66 Correct 8 ms 3420 KB Output is correct
67 Correct 7 ms 3264 KB Output is correct
68 Correct 7 ms 3420 KB Output is correct
69 Correct 15 ms 4336 KB Output is correct
70 Correct 32 ms 4824 KB Output is correct
71 Correct 739 ms 67020 KB Output is correct
72 Correct 736 ms 67644 KB Output is correct
73 Correct 340 ms 36664 KB Output is correct
74 Correct 696 ms 67784 KB Output is correct
75 Correct 358 ms 30404 KB Output is correct
76 Correct 381 ms 36552 KB Output is correct
77 Correct 332 ms 36552 KB Output is correct
78 Correct 695 ms 66340 KB Output is correct
79 Correct 1 ms 2648 KB Output is correct
80 Correct 1 ms 2652 KB Output is correct
81 Correct 1 ms 2652 KB Output is correct
82 Correct 1 ms 2652 KB Output is correct
83 Correct 1 ms 2652 KB Output is correct
84 Correct 1 ms 2652 KB Output is correct
85 Correct 1 ms 2652 KB Output is correct
86 Correct 1 ms 2652 KB Output is correct
87 Correct 1 ms 2652 KB Output is correct
88 Correct 1 ms 2652 KB Output is correct
89 Correct 1 ms 2652 KB Output is correct
90 Correct 19 ms 4348 KB Output is correct
91 Correct 7 ms 3420 KB Output is correct
92 Correct 7 ms 3344 KB Output is correct
93 Correct 27 ms 6356 KB Output is correct
94 Correct 319 ms 35780 KB Output is correct
95 Correct 764 ms 67664 KB Output is correct
96 Correct 770 ms 67784 KB Output is correct
97 Correct 670 ms 67780 KB Output is correct
98 Correct 354 ms 36544 KB Output is correct
99 Correct 719 ms 67796 KB Output is correct
100 Correct 742 ms 67784 KB Output is correct
101 Correct 649 ms 67784 KB Output is correct
102 Correct 678 ms 67780 KB Output is correct
103 Correct 323 ms 36648 KB Output is correct
104 Correct 661 ms 64712 KB Output is correct
105 Correct 576 ms 67880 KB Output is correct