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Submission #248625

# Submission time Handle Problem Language Result Execution time Memory
248625 2020-07-12T22:28:22 Z Sorting Global Warming (CEOI18_glo) C++14
100 / 100
 154 ms 7928 KB 
#include <bits/stdc++.h>

using namespace std;

const int k_N = 4e5 + 3;
const int k_Inf = 1e9 + 3;

struct Fenwick{
    int a[2 * k_N];

    void update(int i, int d){
        for(++i; i < k_N; i += i & -i)
            a[i] = max(d, a[i]);
    }

    int query(int i){
        int ans = 0;
        for(++i; i >= 1; i -= i & -i)
            ans = max(a[i], ans);
        return ans;
    }
};

int n, x;
int t[k_N], st[2 * k_N];

Fenwick f[2];

int main(){
    ios::sync_with_stdio(false);
    cin.tie(NULL);

    cin >> n >> x;
    for(int i = 0; i < n; ++i)
        cin >> t[i];

    for(int i = 0; i < n; ++i){
        st[2 * i] = t[i];
        st[2 * i + 1] = t[i] + x;
    }
    sort(st, st + 2 * n);

    for(int i = 0; i < n; ++i){
        int p1 = lower_bound(st, st + 2 * n, t[i]) - st;
        int p2 = lower_bound(st, st + 2 * n, t[i] + x) - st;

        int a = f[0].query(p1 - 1);
        int b = f[0].query(p2 - 1);
        int c = f[1].query(p2 - 1);

        f[0].update(p1, a + 1);
        f[1].update(p2, max(b, c) + 1);
    }

    cout << f[1].query(2 * n) << "\n";
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 0 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 0 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 0 ms 384 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 0 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 0 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 0 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 512 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 149 ms 5880 KB Output is correct
2 Correct 154 ms 7928 KB Output is correct
3 Correct 153 ms 7800 KB Output is correct
4 Correct 151 ms 7800 KB Output is correct
5 Correct 69 ms 5596 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 1792 KB Output is correct
2 Correct 40 ms 1792 KB Output is correct
3 Correct 32 ms 1792 KB Output is correct
4 Correct 18 ms 1536 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 18 ms 1792 KB Output is correct
7 Correct 27 ms 1792 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 2424 KB Output is correct
2 Correct 70 ms 2432 KB Output is correct
3 Correct 151 ms 4344 KB Output is correct
4 Correct 74 ms 4856 KB Output is correct
5 Correct 43 ms 2936 KB Output is correct
6 Correct 71 ms 5240 KB Output is correct
7 Correct 78 ms 6008 KB Output is correct
8 Correct 61 ms 3324 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 0 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 0 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 0 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 512 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 149 ms 5880 KB Output is correct
28 Correct 154 ms 7928 KB Output is correct
29 Correct 153 ms 7800 KB Output is correct
30 Correct 151 ms 7800 KB Output is correct
31 Correct 69 ms 5596 KB Output is correct
32 Correct 33 ms 1792 KB Output is correct
33 Correct 40 ms 1792 KB Output is correct
34 Correct 32 ms 1792 KB Output is correct
35 Correct 18 ms 1536 KB Output is correct
36 Correct 0 ms 384 KB Output is correct
37 Correct 18 ms 1792 KB Output is correct
38 Correct 27 ms 1792 KB Output is correct
39 Correct 71 ms 2424 KB Output is correct
40 Correct 70 ms 2432 KB Output is correct
41 Correct 151 ms 4344 KB Output is correct
42 Correct 74 ms 4856 KB Output is correct
43 Correct 43 ms 2936 KB Output is correct
44 Correct 71 ms 5240 KB Output is correct
45 Correct 78 ms 6008 KB Output is correct
46 Correct 61 ms 3324 KB Output is correct
47 Correct 66 ms 4088 KB Output is correct
48 Correct 71 ms 4092 KB Output is correct
49 Correct 149 ms 7800 KB Output is correct
50 Correct 77 ms 5524 KB Output is correct
51 Correct 62 ms 4856 KB Output is correct
52 Correct 84 ms 7032 KB Output is correct
53 Correct 86 ms 5496 KB Output is correct
54 Correct 86 ms 6264 KB Output is correct
55 Correct 120 ms 7800 KB Output is correct