Submission #163780

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
163780	2019-11-15T09:25:58 Z	Alexa2001	Global Warming (CEOI18_glo)	C++17	100 / 100	231 ms	7076 KB

#include <bits/stdc++.h>

using namespace std;

const int Nmax = 2e5 + 5;

pair<int,int> a[Nmax];
int A[Nmax];
int dp1[Nmax], dp2[Nmax];
int X, n;

class AIB 
{
    int b[Nmax];

    int query(int p)
    {
        int ans = 0;
        for(; p<=n; p+=ub(p))
            ans = max(ans, b[p]);
        return ans;
    }

    void update(int p, int val)
    {
        for(; p; p-=ub(p)) b[p] = max(b[p], val);
    }
    
    int ub(int x) { return (x&(-x)); }

public:
    void clear()
    {
        memset(b, 0, sizeof(b));
    }
    
    int query_greater(int x)
    {
        int p = lower_bound(a+1, a+n+1, make_pair(x+1, 0)) - a;
        return query(p);
    }

    void update_greater(int x, int val)
    {
        int p = lower_bound(a+1, a+n+1, make_pair(x, 0)) - a;
        update(p, val);
    }

    int query_smaller(int x)
    {
        int p = lower_bound(a+1, a+n+1, make_pair(x, 0)) - a - 1;
        return query(n + 1 - p);
    }

    void update_smaller(int x, int val)
    {
        int p = lower_bound(a+1, a+n+1, make_pair(x, 0)) - a;
        update(n+1-p, val);
    }
} aib;

void norm()
{
    int i;
    for(i=1; i<=n; ++i)
        a[i] = {A[i], i};

    sort(a+1, a+n+1);
}

void solve()
{
    int i;

    aib.clear();
    for(i=n; i; --i)
    {
        dp2[i] = aib.query_greater(A[i]) + 1;
        aib.update_greater(A[i], dp2[i]);
    }
    
    int ans = 0;
    aib.clear();
    for(i=1; i<=n; ++i)
    {
        int curr_ans = aib.query_smaller(A[i] + X) + dp2[i];
        ans = max(ans, curr_ans);

        dp1[i] = aib.query_smaller(A[i]) + 1;
        aib.update_smaller(A[i], dp1[i]);
    }
    
    cout << ans << '\n';
}

int main()
{
   // freopen("input", "r", stdin);
    cin.sync_with_stdio(false); cin.tie(0);

    cin >> n >> X;

    int i;
    for(i=1; i<=n; ++i) cin >> A[i];

    norm();
    solve();

    return 0;
}

Subtask #1
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	1144 KB	Output is correct
2	Correct	3 ms	1144 KB	Output is correct
3	Correct	3 ms	1144 KB	Output is correct
4	Correct	4 ms	1148 KB	Output is correct
5	Correct	3 ms	1148 KB	Output is correct
6	Correct	3 ms	1276 KB	Output is correct
7	Correct	3 ms	1144 KB	Output is correct
8	Correct	3 ms	1144 KB	Output is correct
9	Correct	3 ms	1144 KB	Output is correct
10	Correct	3 ms	1144 KB	Output is correct
11	Correct	3 ms	1144 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	1144 KB	Output is correct
2	Correct	3 ms	1144 KB	Output is correct
3	Correct	3 ms	1144 KB	Output is correct
4	Correct	4 ms	1148 KB	Output is correct
5	Correct	3 ms	1148 KB	Output is correct
6	Correct	3 ms	1276 KB	Output is correct
7	Correct	3 ms	1144 KB	Output is correct
8	Correct	3 ms	1144 KB	Output is correct
9	Correct	3 ms	1144 KB	Output is correct
10	Correct	3 ms	1144 KB	Output is correct
11	Correct	3 ms	1144 KB	Output is correct
12	Correct	3 ms	1144 KB	Output is correct
13	Correct	3 ms	1144 KB	Output is correct
14	Correct	3 ms	1144 KB	Output is correct
15	Correct	3 ms	1144 KB	Output is correct
16	Correct	3 ms	1144 KB	Output is correct
17	Correct	3 ms	1144 KB	Output is correct
18	Correct	3 ms	1148 KB	Output is correct

Subtask #3
13.0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	1144 KB	Output is correct
2	Correct	3 ms	1144 KB	Output is correct
3	Correct	3 ms	1144 KB	Output is correct
4	Correct	4 ms	1148 KB	Output is correct
5	Correct	3 ms	1148 KB	Output is correct
6	Correct	3 ms	1276 KB	Output is correct
7	Correct	3 ms	1144 KB	Output is correct
8	Correct	3 ms	1144 KB	Output is correct
9	Correct	3 ms	1144 KB	Output is correct
10	Correct	3 ms	1144 KB	Output is correct
11	Correct	3 ms	1144 KB	Output is correct
12	Correct	3 ms	1144 KB	Output is correct
13	Correct	3 ms	1144 KB	Output is correct
14	Correct	3 ms	1144 KB	Output is correct
15	Correct	3 ms	1144 KB	Output is correct
16	Correct	3 ms	1144 KB	Output is correct
17	Correct	3 ms	1144 KB	Output is correct
18	Correct	3 ms	1148 KB	Output is correct
19	Correct	3 ms	1144 KB	Output is correct
20	Correct	3 ms	1144 KB	Output is correct
21	Correct	3 ms	1144 KB	Output is correct
22	Correct	3 ms	1144 KB	Output is correct
23	Correct	3 ms	1148 KB	Output is correct
24	Correct	3 ms	1144 KB	Output is correct
25	Correct	3 ms	1144 KB	Output is correct
26	Correct	3 ms	1144 KB	Output is correct

Subtask #4
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	231 ms	6984 KB	Output is correct
2	Correct	229 ms	6928 KB	Output is correct
3	Correct	228 ms	6976 KB	Output is correct
4	Correct	229 ms	6892 KB	Output is correct
5	Correct	105 ms	6224 KB	Output is correct

Subtask #5
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	57 ms	2584 KB	Output is correct
2	Correct	53 ms	2680 KB	Output is correct
3	Correct	52 ms	2552 KB	Output is correct
4	Correct	27 ms	2424 KB	Output is correct
5	Correct	3 ms	1144 KB	Output is correct
6	Correct	29 ms	2424 KB	Output is correct
7	Correct	48 ms	2552 KB	Output is correct

Subtask #6
17.0 / 17.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	99 ms	4060 KB	Output is correct
2	Correct	112 ms	4060 KB	Output is correct
3	Correct	218 ms	7076 KB	Output is correct
4	Correct	102 ms	6252 KB	Output is correct
5	Correct	60 ms	3704 KB	Output is correct
6	Correct	100 ms	6148 KB	Output is correct
7	Correct	105 ms	6776 KB	Output is correct
8	Correct	80 ms	4088 KB	Output is correct

Subtask #7
25.0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	1144 KB	Output is correct
2	Correct	3 ms	1144 KB	Output is correct
3	Correct	3 ms	1144 KB	Output is correct
4	Correct	4 ms	1148 KB	Output is correct
5	Correct	3 ms	1148 KB	Output is correct
6	Correct	3 ms	1276 KB	Output is correct
7	Correct	3 ms	1144 KB	Output is correct
8	Correct	3 ms	1144 KB	Output is correct
9	Correct	3 ms	1144 KB	Output is correct
10	Correct	3 ms	1144 KB	Output is correct
11	Correct	3 ms	1144 KB	Output is correct
12	Correct	3 ms	1144 KB	Output is correct
13	Correct	3 ms	1144 KB	Output is correct
14	Correct	3 ms	1144 KB	Output is correct
15	Correct	3 ms	1144 KB	Output is correct
16	Correct	3 ms	1144 KB	Output is correct
17	Correct	3 ms	1144 KB	Output is correct
18	Correct	3 ms	1148 KB	Output is correct
19	Correct	3 ms	1144 KB	Output is correct
20	Correct	3 ms	1144 KB	Output is correct
21	Correct	3 ms	1144 KB	Output is correct
22	Correct	3 ms	1144 KB	Output is correct
23	Correct	3 ms	1148 KB	Output is correct
24	Correct	3 ms	1144 KB	Output is correct
25	Correct	3 ms	1144 KB	Output is correct
26	Correct	3 ms	1144 KB	Output is correct
27	Correct	231 ms	6984 KB	Output is correct
28	Correct	229 ms	6928 KB	Output is correct
29	Correct	228 ms	6976 KB	Output is correct
30	Correct	229 ms	6892 KB	Output is correct
31	Correct	105 ms	6224 KB	Output is correct
32	Correct	57 ms	2584 KB	Output is correct
33	Correct	53 ms	2680 KB	Output is correct
34	Correct	52 ms	2552 KB	Output is correct
35	Correct	27 ms	2424 KB	Output is correct
36	Correct	3 ms	1144 KB	Output is correct
37	Correct	29 ms	2424 KB	Output is correct
38	Correct	48 ms	2552 KB	Output is correct
39	Correct	99 ms	4060 KB	Output is correct
40	Correct	112 ms	4060 KB	Output is correct
41	Correct	218 ms	7076 KB	Output is correct
42	Correct	102 ms	6252 KB	Output is correct
43	Correct	60 ms	3704 KB	Output is correct
44	Correct	100 ms	6148 KB	Output is correct
45	Correct	105 ms	6776 KB	Output is correct
46	Correct	80 ms	4088 KB	Output is correct
47	Correct	108 ms	4064 KB	Output is correct
48	Correct	108 ms	4092 KB	Output is correct
49	Correct	227 ms	6912 KB	Output is correct
50	Correct	102 ms	6220 KB	Output is correct
51	Correct	93 ms	4896 KB	Output is correct
52	Correct	128 ms	6264 KB	Output is correct
53	Correct	106 ms	6264 KB	Output is correct
54	Correct	111 ms	7032 KB	Output is correct
55	Correct	180 ms	6964 KB	Output is correct

Submission #163780

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