답안 #888450

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
888450	2023-12-17T12:46:26 Z	kim	Global Warming (CEOI18_glo)	C++17	100 / 100	102 ms	6604 KB

#include<bits/stdc++.h>
using namespace std;
#define eb emplace_back

int dp[200005],a[200005],dpL[200005],dpR[200005];

struct fenwick{
    vector<int> bit;
    void init(int n){bit=vector<int>(n);}
    void upd(int i,int x){
        for(;i<bit.size();i+=i&-i) bit[i]=max(bit[i],x);
    }
    int qr(int i){
        int ret=0;
        for(;i>0;i-=i&-i) ret=max(ret,bit[i]);
        return ret;
    }
}fw;

int main(){
    ios::sync_with_stdio(false); cin.tie(0);
 
    int n,d; cin>>n>>d;
    int cnt=0;
    for(int i=1;i<=n;++i){
        cin>>a[i];
        int id=lower_bound(dp,dp+cnt,a[i])-dp;
        if(id==cnt) ++cnt;
        dp[id]=a[i];
        dpL[i]=id+1;
    }
    cnt=0;
    for(int i=n;i>=1;--i){
        int id=lower_bound(dp,dp+cnt,-a[i])-dp;
        if(id==cnt) ++cnt;
        dp[id]=-a[i];
        dpR[i]=id+1;
    }

    vector<int> comp;
    for(int i=1;i<=n;++i) comp.eb(a[i]-d);
    sort(comp.begin(),comp.end());
    comp.erase(unique(comp.begin(),comp.end()),comp.end());

    fw.init(comp.size()+5);
    int ans=0;
    for(int i=1;i<=n;++i){
        ans=max(ans,dpR[i]+fw.qr(lower_bound(comp.begin(),comp.end(),a[i])-comp.begin()));
        fw.upd(lower_bound(comp.begin(),comp.end(),a[i]-d)-comp.begin()+1,dpL[i]);
    }
    cout<<ans;
 
    return 0;
}

Compilation message

glo.cpp: In member function 'void fenwick::upd(int, int)':
glo.cpp:11:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |         for(;i<bit.size();i+=i&-i) bit[i]=max(bit[i],x);
      |              ~^~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	0 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	0 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	0 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2512 KB	Output is correct
11	Correct	1 ms	2392 KB	Output is correct

Subtask #2
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	0 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	0 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	0 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2512 KB	Output is correct
11	Correct	1 ms	2392 KB	Output is correct
12	Correct	0 ms	2396 KB	Output is correct
13	Correct	0 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	0 ms	2508 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	0 ms	2396 KB	Output is correct
18	Correct	1 ms	2652 KB	Output is correct

Subtask #3
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	0 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	0 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	0 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2512 KB	Output is correct
11	Correct	1 ms	2392 KB	Output is correct
12	Correct	0 ms	2396 KB	Output is correct
13	Correct	0 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	0 ms	2508 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	0 ms	2396 KB	Output is correct
18	Correct	1 ms	2652 KB	Output is correct
19	Correct	1 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	1 ms	2516 KB	Output is correct
24	Correct	1 ms	2392 KB	Output is correct
25	Correct	1 ms	2396 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	96 ms	6436 KB	Output is correct
2	Correct	99 ms	6352 KB	Output is correct
3	Correct	96 ms	6352 KB	Output is correct
4	Correct	95 ms	6432 KB	Output is correct
5	Correct	45 ms	5340 KB	Output is correct

Subtask #5
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	22 ms	3548 KB	Output is correct
2	Correct	22 ms	3552 KB	Output is correct
3	Correct	22 ms	3552 KB	Output is correct
4	Correct	12 ms	3416 KB	Output is correct
5	Correct	0 ms	2396 KB	Output is correct
6	Correct	11 ms	3420 KB	Output is correct
7	Correct	18 ms	3548 KB	Output is correct

Subtask #6
17.0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	40 ms	4564 KB	Output is correct
2	Correct	39 ms	4572 KB	Output is correct
3	Correct	85 ms	6412 KB	Output is correct
4	Correct	42 ms	5336 KB	Output is correct
5	Correct	27 ms	4316 KB	Output is correct
6	Correct	37 ms	5836 KB	Output is correct
7	Correct	42 ms	6464 KB	Output is correct
8	Correct	32 ms	4560 KB	Output is correct

Subtask #7
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	0 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	0 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	0 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2512 KB	Output is correct
11	Correct	1 ms	2392 KB	Output is correct
12	Correct	0 ms	2396 KB	Output is correct
13	Correct	0 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	0 ms	2508 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	0 ms	2396 KB	Output is correct
18	Correct	1 ms	2652 KB	Output is correct
19	Correct	1 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	1 ms	2516 KB	Output is correct
24	Correct	1 ms	2392 KB	Output is correct
25	Correct	1 ms	2396 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	96 ms	6436 KB	Output is correct
28	Correct	99 ms	6352 KB	Output is correct
29	Correct	96 ms	6352 KB	Output is correct
30	Correct	95 ms	6432 KB	Output is correct
31	Correct	45 ms	5340 KB	Output is correct
32	Correct	22 ms	3548 KB	Output is correct
33	Correct	22 ms	3552 KB	Output is correct
34	Correct	22 ms	3552 KB	Output is correct
35	Correct	12 ms	3416 KB	Output is correct
36	Correct	0 ms	2396 KB	Output is correct
37	Correct	11 ms	3420 KB	Output is correct
38	Correct	18 ms	3548 KB	Output is correct
39	Correct	40 ms	4564 KB	Output is correct
40	Correct	39 ms	4572 KB	Output is correct
41	Correct	85 ms	6412 KB	Output is correct
42	Correct	42 ms	5336 KB	Output is correct
43	Correct	27 ms	4316 KB	Output is correct
44	Correct	37 ms	5836 KB	Output is correct
45	Correct	42 ms	6464 KB	Output is correct
46	Correct	32 ms	4560 KB	Output is correct
47	Correct	46 ms	4320 KB	Output is correct
48	Correct	45 ms	4560 KB	Output is correct
49	Correct	102 ms	6428 KB	Output is correct
50	Correct	46 ms	5332 KB	Output is correct
51	Correct	42 ms	5084 KB	Output is correct
52	Correct	54 ms	6292 KB	Output is correct
53	Correct	40 ms	6084 KB	Output is correct
54	Correct	44 ms	6604 KB	Output is correct
55	Correct	82 ms	6348 KB	Output is correct

답안 #888450

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 10.0 / 10.0

Subtask #3 13.0 / 13.0

Subtask #4 10.0 / 10.0

Subtask #5 20.0 / 20.0

Subtask #6 17.0 / 17.0

Subtask #7 25.0 / 25.0

Subtask #1
5.0 / 5.0

Subtask #2
10.0 / 10.0

Subtask #3
13.0 / 13.0

Subtask #4
10.0 / 10.0

Subtask #5
20.0 / 20.0

Subtask #6
17.0 / 17.0

Subtask #7
25.0 / 25.0