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Submission #1105825

# Submission time Handle Problem Language Result Execution time Memory
1105825 2024-10-28T03:14:22 Z QuocSensei Global Warming (CEOI18_glo) C++14
100 / 100
 169 ms 11960 KB 
#include <bits/stdc++.h>

#define ll long long
#define el cout << '\n'

using namespace std;

const int maxn = 4e5;

int n, bitUp[maxn + 10], bitDown[maxn + 10], lis[maxn + 10], ans = 0;
vector<ll> v;
ll x, a[maxn + 10];

void updateUp(int x, int v)
{
    for (;x <= maxn; x += x&-x) bitUp[x] = max(bitUp[x], v);
}
int getUp(int x)
{
    int ans = 0;
    for (;x ; x&=x-1) ans = max(ans, bitUp[x]);
    return ans;
}
void updateDown(int x, int v)
{
    for (;x; x&=x-1) bitDown[x] = max(bitDown[x], v);
}
int getDown(int x)
{
    int ans = 0;
    for (;x <= maxn; x += x&-x) ans = max(ans, bitDown[x]);
    return ans;
}
ll f(ll x)
{
    return lower_bound(v.begin(), v.end(), x) - v.begin() + 1;
}

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    if (fopen("GLO.INP", "r"))
    {
        freopen("GLO.INP", "r", stdin);
        freopen("GLO.OUT", "w", stdout);
    }
    cin >> n >> x;
    for (int i = 1; i <= n; i++)
    {
        cin >> a[i];
        v.push_back(a[i]);
        v.push_back(a[i] + x);
    }
    sort(v.begin(), v.end());
    v.resize(unique(v.begin(), v.end()) - v.begin());
    for (int i = n; i >= 1; i--)
    {
        int p = getDown(f(a[i]) + 1) + 1;
        lis[i] = p;
        updateDown(f(a[i]), p);
    }
    for (int i = 1; i <= n; i++)
    {
        int p = getUp(f(a[i] + x) - 1) + 1;
        int u = getUp(f(a[i]) - 1) + 1;
        ans = max(ans, p + lis[i] - 1);
        updateUp(f(a[i]), u);
    }
    cout << ans;
}

Compilation message

glo.cpp: In function 'int main()':
glo.cpp:44:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |         freopen("GLO.INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
glo.cpp:45:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |         freopen("GLO.OUT", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2384 KB Output is correct
2 Correct 1 ms 2384 KB Output is correct
3 Correct 1 ms 2384 KB Output is correct
4 Correct 1 ms 2384 KB Output is correct
5 Correct 1 ms 2384 KB Output is correct
6 Correct 1 ms 2556 KB Output is correct
7 Correct 1 ms 2384 KB Output is correct
8 Correct 1 ms 2384 KB Output is correct
9 Correct 1 ms 2384 KB Output is correct
10 Correct 1 ms 2384 KB Output is correct
11 Correct 1 ms 2384 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2384 KB Output is correct
2 Correct 1 ms 2384 KB Output is correct
3 Correct 1 ms 2384 KB Output is correct
4 Correct 1 ms 2384 KB Output is correct
5 Correct 1 ms 2384 KB Output is correct
6 Correct 1 ms 2556 KB Output is correct
7 Correct 1 ms 2384 KB Output is correct
8 Correct 1 ms 2384 KB Output is correct
9 Correct 1 ms 2384 KB Output is correct
10 Correct 1 ms 2384 KB Output is correct
11 Correct 1 ms 2384 KB Output is correct
12 Correct 1 ms 2384 KB Output is correct
13 Correct 1 ms 2384 KB Output is correct
14 Correct 1 ms 2384 KB Output is correct
15 Correct 1 ms 2384 KB Output is correct
16 Correct 1 ms 2384 KB Output is correct
17 Correct 1 ms 2384 KB Output is correct
18 Correct 1 ms 2384 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2384 KB Output is correct
2 Correct 1 ms 2384 KB Output is correct
3 Correct 1 ms 2384 KB Output is correct
4 Correct 1 ms 2384 KB Output is correct
5 Correct 1 ms 2384 KB Output is correct
6 Correct 1 ms 2556 KB Output is correct
7 Correct 1 ms 2384 KB Output is correct
8 Correct 1 ms 2384 KB Output is correct
9 Correct 1 ms 2384 KB Output is correct
10 Correct 1 ms 2384 KB Output is correct
11 Correct 1 ms 2384 KB Output is correct
12 Correct 1 ms 2384 KB Output is correct
13 Correct 1 ms 2384 KB Output is correct
14 Correct 1 ms 2384 KB Output is correct
15 Correct 1 ms 2384 KB Output is correct
16 Correct 1 ms 2384 KB Output is correct
17 Correct 1 ms 2384 KB Output is correct
18 Correct 1 ms 2384 KB Output is correct
19 Correct 1 ms 2384 KB Output is correct
20 Correct 1 ms 2384 KB Output is correct
21 Correct 2 ms 2552 KB Output is correct
22 Correct 1 ms 2384 KB Output is correct
23 Correct 1 ms 2384 KB Output is correct
24 Correct 1 ms 2384 KB Output is correct
25 Correct 1 ms 2384 KB Output is correct
26 Correct 1 ms 2384 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 150 ms 10952 KB Output is correct
2 Correct 153 ms 11120 KB Output is correct
3 Correct 148 ms 10952 KB Output is correct
4 Correct 148 ms 10952 KB Output is correct
5 Correct 59 ms 10952 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 6340 KB Output is correct
2 Correct 38 ms 6348 KB Output is correct
3 Correct 38 ms 6348 KB Output is correct
4 Correct 17 ms 5840 KB Output is correct
5 Correct 1 ms 2384 KB Output is correct
6 Correct 20 ms 5968 KB Output is correct
7 Correct 30 ms 6092 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 7888 KB Output is correct
2 Correct 77 ms 7884 KB Output is correct
3 Correct 167 ms 10952 KB Output is correct
4 Correct 68 ms 10952 KB Output is correct
5 Correct 44 ms 7884 KB Output is correct
6 Correct 73 ms 10952 KB Output is correct
7 Correct 74 ms 10952 KB Output is correct
8 Correct 64 ms 7884 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2384 KB Output is correct
2 Correct 1 ms 2384 KB Output is correct
3 Correct 1 ms 2384 KB Output is correct
4 Correct 1 ms 2384 KB Output is correct
5 Correct 1 ms 2384 KB Output is correct
6 Correct 1 ms 2556 KB Output is correct
7 Correct 1 ms 2384 KB Output is correct
8 Correct 1 ms 2384 KB Output is correct
9 Correct 1 ms 2384 KB Output is correct
10 Correct 1 ms 2384 KB Output is correct
11 Correct 1 ms 2384 KB Output is correct
12 Correct 1 ms 2384 KB Output is correct
13 Correct 1 ms 2384 KB Output is correct
14 Correct 1 ms 2384 KB Output is correct
15 Correct 1 ms 2384 KB Output is correct
16 Correct 1 ms 2384 KB Output is correct
17 Correct 1 ms 2384 KB Output is correct
18 Correct 1 ms 2384 KB Output is correct
19 Correct 1 ms 2384 KB Output is correct
20 Correct 1 ms 2384 KB Output is correct
21 Correct 2 ms 2552 KB Output is correct
22 Correct 1 ms 2384 KB Output is correct
23 Correct 1 ms 2384 KB Output is correct
24 Correct 1 ms 2384 KB Output is correct
25 Correct 1 ms 2384 KB Output is correct
26 Correct 1 ms 2384 KB Output is correct
27 Correct 150 ms 10952 KB Output is correct
28 Correct 153 ms 11120 KB Output is correct
29 Correct 148 ms 10952 KB Output is correct
30 Correct 148 ms 10952 KB Output is correct
31 Correct 59 ms 10952 KB Output is correct
32 Correct 37 ms 6340 KB Output is correct
33 Correct 38 ms 6348 KB Output is correct
34 Correct 38 ms 6348 KB Output is correct
35 Correct 17 ms 5840 KB Output is correct
36 Correct 1 ms 2384 KB Output is correct
37 Correct 20 ms 5968 KB Output is correct
38 Correct 30 ms 6092 KB Output is correct
39 Correct 77 ms 7888 KB Output is correct
40 Correct 77 ms 7884 KB Output is correct
41 Correct 167 ms 10952 KB Output is correct
42 Correct 68 ms 10952 KB Output is correct
43 Correct 44 ms 7884 KB Output is correct
44 Correct 73 ms 10952 KB Output is correct
45 Correct 74 ms 10952 KB Output is correct
46 Correct 64 ms 7884 KB Output is correct
47 Correct 89 ms 8544 KB Output is correct
48 Correct 81 ms 8384 KB Output is correct
49 Correct 169 ms 11960 KB Output is correct
50 Correct 65 ms 10952 KB Output is correct
51 Correct 57 ms 10952 KB Output is correct
52 Correct 84 ms 10952 KB Output is correct
53 Correct 78 ms 10952 KB Output is correct
54 Correct 87 ms 10952 KB Output is correct
55 Correct 135 ms 11448 KB Output is correct