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Submission #1084637

# Submission time Handle Problem Language Result Execution time Memory
1084637 2024-09-06T15:20:23 Z vjudge1 Fire (BOI24_fire) C++17
100 / 100
 927 ms 70180 KB 
#include<bits/stdc++.h>
#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 main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    int n,m;cin>>n>>m;vector<int>v;
    int s[n],e[n];
    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 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 1 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 0 ms 604 KB Output is correct
9 Correct 1 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 1 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 608 KB Output is correct
18 Correct 0 ms 604 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 0 ms 604 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 1 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 0 ms 604 KB Output is correct
3 Correct 1 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 0 ms 604 KB Output is correct
9 Correct 1 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 1 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 608 KB Output is correct
18 Correct 0 ms 604 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 0 ms 604 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 2 ms 604 KB Output is correct
26 Correct 1 ms 652 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 608 KB Output is correct
30 Correct 1 ms 604 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 1 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 0 ms 604 KB Output is correct
3 Correct 1 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 0 ms 604 KB Output is correct
9 Correct 1 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 1 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 608 KB Output is correct
18 Correct 0 ms 604 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 0 ms 604 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 2 ms 604 KB Output is correct
26 Correct 1 ms 652 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 608 KB Output is correct
30 Correct 1 ms 604 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 1 ms 604 KB Output is correct
38 Correct 1 ms 604 KB Output is correct
39 Correct 18 ms 2384 KB Output is correct
40 Correct 15 ms 2396 KB Output is correct
41 Correct 17 ms 2392 KB Output is correct
42 Correct 7 ms 1496 KB Output is correct
43 Correct 8 ms 1372 KB Output is correct
44 Correct 8 ms 1624 KB Output is correct
45 Correct 8 ms 1628 KB Output is correct
46 Correct 8 ms 1628 KB Output is correct
47 Correct 17 ms 2328 KB Output is correct
48 Correct 17 ms 2328 KB Output is correct
49 Correct 14 ms 2140 KB Output is correct
50 Correct 9 ms 1444 KB Output is correct

Subtask #4
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 1 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 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 19 ms 2268 KB Output is correct
16 Correct 7 ms 1436 KB Output is correct
17 Correct 8 ms 1368 KB Output is correct
18 Correct 8 ms 1628 KB Output is correct
19 Correct 17 ms 2396 KB Output is correct
20 Correct 30 ms 4932 KB Output is correct
21 Correct 871 ms 70088 KB Output is correct
22 Correct 879 ms 70088 KB Output is correct
23 Correct 380 ms 40648 KB Output is correct
24 Correct 807 ms 70180 KB Output is correct
25 Correct 396 ms 36648 KB Output is correct
26 Correct 437 ms 41672 KB Output is correct
27 Correct 383 ms 41672 KB Output is correct
28 Correct 833 ms 68548 KB Output is correct

Subtask #5
21.0 / 21.0

# 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 0 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 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 17 ms 2396 KB Output is correct
13 Correct 7 ms 1368 KB Output is correct
14 Correct 8 ms 1368 KB Output is correct
15 Correct 28 ms 4824 KB Output is correct
16 Correct 376 ms 40692 KB Output is correct
17 Correct 879 ms 70088 KB Output is correct
18 Correct 927 ms 70056 KB Output is correct
19 Correct 804 ms 70008 KB Output is correct
20 Correct 402 ms 40648 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 0 ms 604 KB Output is correct
3 Correct 1 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 0 ms 604 KB Output is correct
9 Correct 1 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 1 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 608 KB Output is correct
18 Correct 0 ms 604 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 0 ms 604 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 2 ms 604 KB Output is correct
26 Correct 1 ms 652 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 608 KB Output is correct
30 Correct 1 ms 604 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 1 ms 604 KB Output is correct
38 Correct 1 ms 604 KB Output is correct
39 Correct 18 ms 2384 KB Output is correct
40 Correct 15 ms 2396 KB Output is correct
41 Correct 17 ms 2392 KB Output is correct
42 Correct 7 ms 1496 KB Output is correct
43 Correct 8 ms 1372 KB Output is correct
44 Correct 8 ms 1624 KB Output is correct
45 Correct 8 ms 1628 KB Output is correct
46 Correct 8 ms 1628 KB Output is correct
47 Correct 17 ms 2328 KB Output is correct
48 Correct 17 ms 2328 KB Output is correct
49 Correct 14 ms 2140 KB Output is correct
50 Correct 9 ms 1444 KB Output is correct
51 Correct 1 ms 604 KB Output is correct
52 Correct 1 ms 604 KB Output is correct
53 Correct 1 ms 604 KB Output is correct
54 Correct 0 ms 604 KB Output is correct
55 Correct 1 ms 604 KB Output is correct
56 Correct 1 ms 604 KB Output is correct
57 Correct 1 ms 460 KB Output is correct
58 Correct 0 ms 604 KB Output is correct
59 Correct 1 ms 604 KB Output is correct
60 Correct 1 ms 604 KB Output is correct
61 Correct 1 ms 604 KB Output is correct
62 Correct 1 ms 604 KB Output is correct
63 Correct 1 ms 604 KB Output is correct
64 Correct 1 ms 600 KB Output is correct
65 Correct 19 ms 2268 KB Output is correct
66 Correct 7 ms 1436 KB Output is correct
67 Correct 8 ms 1368 KB Output is correct
68 Correct 8 ms 1628 KB Output is correct
69 Correct 17 ms 2396 KB Output is correct
70 Correct 30 ms 4932 KB Output is correct
71 Correct 871 ms 70088 KB Output is correct
72 Correct 879 ms 70088 KB Output is correct
73 Correct 380 ms 40648 KB Output is correct
74 Correct 807 ms 70180 KB Output is correct
75 Correct 396 ms 36648 KB Output is correct
76 Correct 437 ms 41672 KB Output is correct
77 Correct 383 ms 41672 KB Output is correct
78 Correct 833 ms 68548 KB Output is correct
79 Correct 0 ms 600 KB Output is correct
80 Correct 1 ms 604 KB Output is correct
81 Correct 1 ms 604 KB Output is correct
82 Correct 0 ms 604 KB Output is correct
83 Correct 1 ms 604 KB Output is correct
84 Correct 1 ms 604 KB Output is correct
85 Correct 1 ms 604 KB Output is correct
86 Correct 1 ms 604 KB Output is correct
87 Correct 1 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 17 ms 2396 KB Output is correct
91 Correct 7 ms 1368 KB Output is correct
92 Correct 8 ms 1368 KB Output is correct
93 Correct 28 ms 4824 KB Output is correct
94 Correct 376 ms 40692 KB Output is correct
95 Correct 879 ms 70088 KB Output is correct
96 Correct 927 ms 70056 KB Output is correct
97 Correct 804 ms 70008 KB Output is correct
98 Correct 402 ms 40648 KB Output is correct
99 Correct 856 ms 70088 KB Output is correct
100 Correct 868 ms 70044 KB Output is correct
101 Correct 777 ms 69988 KB Output is correct
102 Correct 814 ms 70064 KB Output is correct
103 Correct 384 ms 43204 KB Output is correct
104 Correct 810 ms 67012 KB Output is correct
105 Correct 702 ms 68808 KB Output is correct