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Submission #769184

# Submission time Handle Problem Language Result Execution time Memory
769184 2023-06-29T09:30:08 Z raysh07 Global Warming (CEOI18_glo) C++17
100 / 100
 727 ms 68696 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define INF (int)1e18
#define f first
#define s second
 
mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count());
 
int n, x;
const int N = 2e5 + 69;
int seg[8 * N][2], a[N], dp[N][2], b[N];
map <int, int> mp;
set <int> st;
 
void upd(int l, int r, int pos, int qp, int v, int i){
    seg[pos][i] = max(seg[pos][i], v);
    if (l == r){
        return;
    }
    
    int mid = (l + r)/2;
    if (qp <= mid) upd(l, mid, pos*2, qp, v, i);
    else upd(mid + 1, r, pos*2 + 1, qp, v, i);
}
 
int query(int l, int r, int pos, int ql, int qr, int i){
    if (l >= ql && r <= qr) return seg[pos][i];
    else if (l > qr || r < ql) return 0;
    
    int mid = (l + r)/2;
    return max(query(l, mid, pos*2, ql, qr, i), query(mid + 1, r, pos*2 + 1, ql, qr, i));
}
 
void Solve() 
{
    cin >> n >> x;
    for (int i = 1; i <= n; i++){
        cin >> a[i];
        st.insert(a[i]);
        st.insert(a[i] + x);
    }
    
    int ptr = 0;
    for (auto x : st){
        mp[x] = ++ptr;
    }
    
    for (int i = 1; i <= n; i++){
        b[i] = a[i];
        a[i] = mp[a[i]];
    }
    
    int ans = 0;
    
    for (int i = 1; i <= n; i++){
        dp[i][0] = query(1, 2 * n, 1, 1, a[i] - 1, 0) + 1;
        dp[i][1] = query(1, 2 * n, 1, 1, a[i] - 1, 1) + 1;
        dp[i][1] = max(dp[i][1], query(1, 2 * n, 1, 1, mp[b[i] + x] - 1, 0) + 1);
        
        upd(1, 2 * n, 1, a[i], dp[i][0], 0);
        upd(1, 2 * n, 1, a[i], dp[i][1], 1);
        
        ans = max(ans, dp[i][0]);
        ans = max(ans, dp[i][1]);
    }
    
    cout << ans << "\n";
}
 
int32_t main() 
{
    auto begin = std::chrono::high_resolution_clock::now();
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int t = 1;
   // cin >> t;
    for(int i = 1; i <= t; i++) 
    {
        //cout << "Case #" << i << ": ";
        Solve();
    }
    auto end = std::chrono::high_resolution_clock::now();
    auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end - begin);
    cerr << "Time measured: " << elapsed.count() * 1e-9 << " seconds.\n"; 
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 1 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 2 ms 604 KB Output is correct
20 Correct 2 ms 596 KB Output is correct
21 Correct 2 ms 596 KB Output is correct
22 Correct 2 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 2 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 461 ms 38568 KB Output is correct
2 Correct 465 ms 38656 KB Output is correct
3 Correct 486 ms 38568 KB Output is correct
4 Correct 443 ms 38668 KB Output is correct
5 Correct 208 ms 22752 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 97 ms 17432 KB Output is correct
2 Correct 126 ms 17356 KB Output is correct
3 Correct 110 ms 17368 KB Output is correct
4 Correct 44 ms 9736 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 48 ms 9676 KB Output is correct
7 Correct 94 ms 14924 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 236 ms 30448 KB Output is correct
2 Correct 219 ms 30380 KB Output is correct
3 Correct 611 ms 60580 KB Output is correct
4 Correct 225 ms 33696 KB Output is correct
5 Correct 154 ms 30072 KB Output is correct
6 Correct 297 ms 57280 KB Output is correct
7 Correct 300 ms 58036 KB Output is correct
8 Correct 197 ms 30568 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 2 ms 604 KB Output is correct
20 Correct 2 ms 596 KB Output is correct
21 Correct 2 ms 596 KB Output is correct
22 Correct 2 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 2 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 461 ms 38568 KB Output is correct
28 Correct 465 ms 38656 KB Output is correct
29 Correct 486 ms 38568 KB Output is correct
30 Correct 443 ms 38668 KB Output is correct
31 Correct 208 ms 22752 KB Output is correct
32 Correct 97 ms 17432 KB Output is correct
33 Correct 126 ms 17356 KB Output is correct
34 Correct 110 ms 17368 KB Output is correct
35 Correct 44 ms 9736 KB Output is correct
36 Correct 0 ms 340 KB Output is correct
37 Correct 48 ms 9676 KB Output is correct
38 Correct 94 ms 14924 KB Output is correct
39 Correct 236 ms 30448 KB Output is correct
40 Correct 219 ms 30380 KB Output is correct
41 Correct 611 ms 60580 KB Output is correct
42 Correct 225 ms 33696 KB Output is correct
43 Correct 154 ms 30072 KB Output is correct
44 Correct 297 ms 57280 KB Output is correct
45 Correct 300 ms 58036 KB Output is correct
46 Correct 197 ms 30568 KB Output is correct
47 Correct 266 ms 34552 KB Output is correct
48 Correct 266 ms 34512 KB Output is correct
49 Correct 727 ms 68696 KB Output is correct
50 Correct 214 ms 37808 KB Output is correct
51 Correct 167 ms 27780 KB Output is correct
52 Correct 235 ms 38092 KB Output is correct
53 Correct 302 ms 59936 KB Output is correct
54 Correct 309 ms 60564 KB Output is correct
55 Correct 396 ms 58864 KB Output is correct