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Submission #489829

# Submission time Handle Problem Language Result Execution time Memory
489829 2021-11-24T20:54:53 Z JovanB Global Warming (CEOI18_glo) C++17
100 / 100
 355 ms 30200 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

using namespace __gnu_pbds;
using namespace std;

typedef long long ll;

int dp1[200005];
int dp2[200005];
int niz[200005];
int bit[2000005];

cc_hash_table <int, int> u;

int getmax(int x){
    int res = 0;
    while(x){
        res = max(res, bit[x]);
        x -= x & -x;
    }
    return res;
}

void addbit(int x, int val){
    while(x <= 1000000){
        bit[x] = max(bit[x], val);
        x += x & -x;
    }
}

void clearbit(int n){
    for(int i=1; i<=n; i++) bit[i] = 0; 
}

int main() {
    ios_base::sync_with_stdio(false);
    cout.precision(10);
    cout << fixed;
    
    int n, x;
    cin >> n >> x;
    vector <int> vec;
    for(int i=1; i<=n; i++){
        cin >> niz[i];
        vec.push_back(niz[i]);
        vec.push_back(niz[i] + x);
    }
    sort(vec.begin(), vec.end());
    int cnt = 0;
    for(auto c : vec){
        if(!u[c]) u[c] = ++cnt;
    }
    clearbit(cnt+5);
    for(int i=1; i<=n; i++){
        dp1[i] = 1 + getmax(u[niz[i]] - 1);
        addbit(u[niz[i]], dp1[i]);
    }
    clearbit(cnt+5);
    for(int i=n; i>=1; i--){
        dp2[i] = 1 + getmax(cnt+4-u[niz[i]] - 1);
        addbit(cnt+4-u[niz[i]], dp2[i]);
    }
    clearbit(cnt+5);
    int res = 0;
    for(int i=1; i<=n; i++){
        res = max(res, dp1[i]);
        res = max(res, dp2[i] + getmax(u[niz[i] + x] - 1));
        addbit(u[niz[i]], dp1[i]);
    }
    cout << res << "\n";
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 0 ms 336 KB Output is correct
6 Correct 0 ms 336 KB Output is correct
7 Correct 0 ms 336 KB Output is correct
8 Correct 0 ms 336 KB Output is correct
9 Correct 0 ms 324 KB Output is correct
10 Correct 0 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 0 ms 336 KB Output is correct
6 Correct 0 ms 336 KB Output is correct
7 Correct 0 ms 336 KB Output is correct
8 Correct 0 ms 336 KB Output is correct
9 Correct 0 ms 324 KB Output is correct
10 Correct 0 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 0 ms 336 KB Output is correct
14 Correct 0 ms 336 KB Output is correct
15 Correct 0 ms 336 KB Output is correct
16 Correct 0 ms 336 KB Output is correct
17 Correct 0 ms 336 KB Output is correct
18 Correct 0 ms 336 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 0 ms 336 KB Output is correct
6 Correct 0 ms 336 KB Output is correct
7 Correct 0 ms 336 KB Output is correct
8 Correct 0 ms 336 KB Output is correct
9 Correct 0 ms 324 KB Output is correct
10 Correct 0 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 0 ms 336 KB Output is correct
14 Correct 0 ms 336 KB Output is correct
15 Correct 0 ms 336 KB Output is correct
16 Correct 0 ms 336 KB Output is correct
17 Correct 0 ms 336 KB Output is correct
18 Correct 0 ms 336 KB Output is correct
19 Correct 1 ms 464 KB Output is correct
20 Correct 1 ms 464 KB Output is correct
21 Correct 1 ms 464 KB Output is correct
22 Correct 1 ms 460 KB Output is correct
23 Correct 1 ms 460 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 464 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 242 ms 17512 KB Output is correct
2 Correct 216 ms 17340 KB Output is correct
3 Correct 209 ms 17232 KB Output is correct
4 Correct 241 ms 17468 KB Output is correct
5 Correct 85 ms 10920 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 40 ms 7300 KB Output is correct
2 Correct 42 ms 7400 KB Output is correct
3 Correct 44 ms 7480 KB Output is correct
4 Correct 24 ms 4428 KB Output is correct
5 Correct 0 ms 336 KB Output is correct
6 Correct 17 ms 4368 KB Output is correct
7 Correct 33 ms 7352 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 151 ms 14804 KB Output is correct
2 Correct 164 ms 15592 KB Output is correct
3 Correct 355 ms 28608 KB Output is correct
4 Correct 138 ms 16512 KB Output is correct
5 Correct 47 ms 14012 KB Output is correct
6 Correct 93 ms 26860 KB Output is correct
7 Correct 102 ms 27440 KB Output is correct
8 Correct 95 ms 14348 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 0 ms 336 KB Output is correct
6 Correct 0 ms 336 KB Output is correct
7 Correct 0 ms 336 KB Output is correct
8 Correct 0 ms 336 KB Output is correct
9 Correct 0 ms 324 KB Output is correct
10 Correct 0 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 0 ms 336 KB Output is correct
14 Correct 0 ms 336 KB Output is correct
15 Correct 0 ms 336 KB Output is correct
16 Correct 0 ms 336 KB Output is correct
17 Correct 0 ms 336 KB Output is correct
18 Correct 0 ms 336 KB Output is correct
19 Correct 1 ms 464 KB Output is correct
20 Correct 1 ms 464 KB Output is correct
21 Correct 1 ms 464 KB Output is correct
22 Correct 1 ms 460 KB Output is correct
23 Correct 1 ms 460 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 464 KB Output is correct
27 Correct 242 ms 17512 KB Output is correct
28 Correct 216 ms 17340 KB Output is correct
29 Correct 209 ms 17232 KB Output is correct
30 Correct 241 ms 17468 KB Output is correct
31 Correct 85 ms 10920 KB Output is correct
32 Correct 40 ms 7300 KB Output is correct
33 Correct 42 ms 7400 KB Output is correct
34 Correct 44 ms 7480 KB Output is correct
35 Correct 24 ms 4428 KB Output is correct
36 Correct 0 ms 336 KB Output is correct
37 Correct 17 ms 4368 KB Output is correct
38 Correct 33 ms 7352 KB Output is correct
39 Correct 151 ms 14804 KB Output is correct
40 Correct 164 ms 15592 KB Output is correct
41 Correct 355 ms 28608 KB Output is correct
42 Correct 138 ms 16512 KB Output is correct
43 Correct 47 ms 14012 KB Output is correct
44 Correct 93 ms 26860 KB Output is correct
45 Correct 102 ms 27440 KB Output is correct
46 Correct 95 ms 14348 KB Output is correct
47 Correct 162 ms 15060 KB Output is correct
48 Correct 149 ms 14644 KB Output is correct
49 Correct 349 ms 30200 KB Output is correct
50 Correct 128 ms 16480 KB Output is correct
51 Correct 56 ms 13480 KB Output is correct
52 Correct 71 ms 16696 KB Output is correct
53 Correct 88 ms 27732 KB Output is correct
54 Correct 107 ms 28468 KB Output is correct
55 Correct 234 ms 28016 KB Output is correct