oj.uz

Submission #895260

# Submission time Handle Problem Language Result Execution time Memory
895260 2023-12-29T17:13:30 Z TheSahib Global Warming (CEOI18_glo) C++17
100 / 100
 354 ms 35412 KB 
#include <bits/stdc++.h>

#define ll long long
#define oo 1e9
#define pii pair<int, int>

using namespace std;

const int MAX = 2e5 + 5, treesize = MAX * 21, CAP = 1e9 + 9;

int n, x;
int arr[MAX];
int tree[treesize], L[treesize], R[treesize];
int LIS[MAX];

int nxt = 2;

void update(int node, int l, int r, int pos, int val){
    if(l == r){
        tree[node] = max(val, tree[node]);
        return;
    }
    int mid = (l + r) / 2;
    if(pos <= mid){
        if(!L[node]) L[node] = nxt++;
        update(L[node], l, mid, pos, val);
    }
    else{
        if(!R[node]) R[node] = nxt++;
        update(R[node], mid + 1, r, pos, val);
    }
    tree[node] = max(tree[L[node]], tree[R[node]]);
}

int ask(int node, int l, int r, int ql, int qr){
    if(!node) return 0;
    if(qr < l || r < ql) return 0;
    if(ql <= l && r <= qr) return tree[node];
    int mid = (l + r) / 2;
    return max(ask(L[node], l, mid, ql, qr), ask(R[node], mid + 1, r, ql, qr));
}

void solve(){
    cin >> n >> x;
    for(int i = 1; i <= n; i++){
        cin >> arr[i];
    }
    vector<int> v;
    for(int i = 1; i <= n; i++){
        int pos = lower_bound(v.begin(), v.end(), arr[i]) - v.begin();
        LIS[i] = pos + 1;
        if(pos == v.size()){
            v.push_back(arr[i]);
        }
        else{
            v[pos] = arr[i];
        }
    }
    int ans = 0;
    for(int i = n; i >= 1; i--){
        ans = max(ans, LIS[i] + ask(1, 1, CAP, max(arr[i] - x + 1, 1), arr[i] + x - 1));
        update(1, 1, CAP, arr[i], ask(1, 1, CAP, arr[i] + 1, CAP) + 1);
    }
    cout << ans << '\n';
}

int main()
{
    int t = 1;
    while(t){
        t--;
        solve();
    }
}

Compilation message

glo.cpp: In function 'void solve()':
glo.cpp:52:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |         if(pos == v.size()){
      |            ~~~~^~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 448 KB Output is correct
11 Correct 1 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 448 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 444 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 448 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 444 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 620 KB Output is correct
20 Correct 1 ms 600 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 2 ms 604 KB Output is correct
23 Correct 1 ms 464 KB Output is correct
24 Correct 1 ms 600 KB Output is correct
25 Correct 2 ms 344 KB Output is correct
26 Correct 1 ms 348 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 267 ms 35412 KB Output is correct
2 Correct 258 ms 35396 KB Output is correct
3 Correct 292 ms 35316 KB Output is correct
4 Correct 354 ms 35408 KB Output is correct
5 Correct 148 ms 20788 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 10832 KB Output is correct
2 Correct 54 ms 10788 KB Output is correct
3 Correct 56 ms 10840 KB Output is correct
4 Correct 37 ms 6536 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 38 ms 3760 KB Output is correct
7 Correct 47 ms 8276 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 91 ms 19284 KB Output is correct
2 Correct 91 ms 19384 KB Output is correct
3 Correct 232 ms 35284 KB Output is correct
4 Correct 139 ms 20576 KB Output is correct
5 Correct 58 ms 5292 KB Output is correct
6 Correct 106 ms 8060 KB Output is correct
7 Correct 119 ms 8652 KB Output is correct
8 Correct 86 ms 14968 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 448 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 444 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 620 KB Output is correct
20 Correct 1 ms 600 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 2 ms 604 KB Output is correct
23 Correct 1 ms 464 KB Output is correct
24 Correct 1 ms 600 KB Output is correct
25 Correct 2 ms 344 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 267 ms 35412 KB Output is correct
28 Correct 258 ms 35396 KB Output is correct
29 Correct 292 ms 35316 KB Output is correct
30 Correct 354 ms 35408 KB Output is correct
31 Correct 148 ms 20788 KB Output is correct
32 Correct 50 ms 10832 KB Output is correct
33 Correct 54 ms 10788 KB Output is correct
34 Correct 56 ms 10840 KB Output is correct
35 Correct 37 ms 6536 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 38 ms 3760 KB Output is correct
38 Correct 47 ms 8276 KB Output is correct
39 Correct 91 ms 19284 KB Output is correct
40 Correct 91 ms 19384 KB Output is correct
41 Correct 232 ms 35284 KB Output is correct
42 Correct 139 ms 20576 KB Output is correct
43 Correct 58 ms 5292 KB Output is correct
44 Correct 106 ms 8060 KB Output is correct
45 Correct 119 ms 8652 KB Output is correct
46 Correct 86 ms 14968 KB Output is correct
47 Correct 114 ms 19420 KB Output is correct
48 Correct 124 ms 19472 KB Output is correct
49 Correct 309 ms 35200 KB Output is correct
50 Correct 140 ms 20428 KB Output is correct
51 Correct 113 ms 6184 KB Output is correct
52 Correct 169 ms 8256 KB Output is correct
53 Correct 115 ms 8704 KB Output is correct
54 Correct 137 ms 9160 KB Output is correct
55 Correct 196 ms 26452 KB Output is correct