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Submission #955124

# Submission time Handle Problem Language Result Execution time Memory
955124 2024-03-29T12:24:52 Z Ludissey Global Warming (CEOI18_glo) C++14
100 / 100
 45 ms 8152 KB 
#include <bits/stdc++.h>
#define int long long
#define sz(a) (int)a.size()
using namespace std;

signed main() {
    ios_base::sync_with_stdio(false); cin.tie(nullptr);
	int n,x; cin >> n >> x;
    vector<int> t(n);

    for (int i = 0; i < n; i++) cin >> t[i];
    vector<int> pref(n,0);
    vector<int> suff(n,0);
    vector<int> lis;
    lis.push_back(t[0]);
    pref[0]=1;
    for (int i = 1; i < n; i++)
    {
        if(t[i]+x>lis.back()) pref[i]=sz(lis)+1;
        else{
            int p=(lower_bound(lis.begin(), lis.end(), t[i]+x))-lis.begin();
            pref[i]=p+1;
        }
        if(t[i]>lis.back()) {
            lis.push_back(t[i]);
        }else{
            int p=(lower_bound(lis.begin(), lis.end(), t[i]))-lis.begin(); 
            lis[p]=t[i];
        }

    }
    lis.clear();
    lis.push_back(-t[n-1]);
    suff[n-1]=1;
    for (int i = n-2; i >= 0; i--)
    {
        if(-t[i]>lis.back()) {
            lis.push_back(-t[i]);
            suff[i]=sz(lis);
        }else{
            int p=(lower_bound(lis.begin(), lis.end(), -t[i]))-lis.begin(); 
            lis[p]=-t[i];
            suff[i]=p+1;

        }

    }
    int mx=max(pref[n-1],suff[0]);
    for (int i = 1; i < n; i++) mx=max(mx,pref[i]+suff[i]-1);
    cout << mx << "\n";
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 456 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 512 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 456 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 456 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 456 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 456 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 5108 KB Output is correct
2 Correct 44 ms 7032 KB Output is correct
3 Correct 45 ms 6996 KB Output is correct
4 Correct 45 ms 6992 KB Output is correct
5 Correct 18 ms 7380 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 1632 KB Output is correct
2 Correct 11 ms 1884 KB Output is correct
3 Correct 11 ms 2140 KB Output is correct
4 Correct 5 ms 2144 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 4 ms 2252 KB Output is correct
7 Correct 9 ms 2152 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 2900 KB Output is correct
2 Correct 18 ms 3664 KB Output is correct
3 Correct 38 ms 6992 KB Output is correct
4 Correct 17 ms 7388 KB Output is correct
5 Correct 8 ms 3808 KB Output is correct
6 Correct 15 ms 7132 KB Output is correct
7 Correct 18 ms 7900 KB Output is correct
8 Correct 15 ms 3800 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 456 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 456 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 44 ms 5108 KB Output is correct
28 Correct 44 ms 7032 KB Output is correct
29 Correct 45 ms 6996 KB Output is correct
30 Correct 45 ms 6992 KB Output is correct
31 Correct 18 ms 7380 KB Output is correct
32 Correct 10 ms 1632 KB Output is correct
33 Correct 11 ms 1884 KB Output is correct
34 Correct 11 ms 2140 KB Output is correct
35 Correct 5 ms 2144 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 4 ms 2252 KB Output is correct
38 Correct 9 ms 2152 KB Output is correct
39 Correct 18 ms 2900 KB Output is correct
40 Correct 18 ms 3664 KB Output is correct
41 Correct 38 ms 6992 KB Output is correct
42 Correct 17 ms 7388 KB Output is correct
43 Correct 8 ms 3808 KB Output is correct
44 Correct 15 ms 7132 KB Output is correct
45 Correct 18 ms 7900 KB Output is correct
46 Correct 15 ms 3800 KB Output is correct
47 Correct 22 ms 3796 KB Output is correct
48 Correct 22 ms 4056 KB Output is correct
49 Correct 45 ms 7004 KB Output is correct
50 Correct 22 ms 7388 KB Output is correct
51 Correct 15 ms 5848 KB Output is correct
52 Correct 17 ms 7388 KB Output is correct
53 Correct 16 ms 7520 KB Output is correct
54 Correct 18 ms 8152 KB Output is correct
55 Correct 35 ms 7004 KB Output is correct