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Submission #166116

# Submission time Handle Problem Language Result Execution time Memory
166116 2019-11-30T19:24:17 Z GustavK Global Warming (CEOI18_glo) C++14
62 / 100
 69 ms 8696 KB 
#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pi;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<pi> vpi;
typedef vector<vi> vvi;
const int inf = 0x3f3f3f3f;
const ll linf = 123456789012345678;
const ll mod = 1000000007;
#define all(x) x.begin(), x.end()
#define debug(x) cerr << #x << " = " << x << endl
#define sz(x) ((int)(x).size())


int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
	
    ll n, x;
    cin >> n >> x;
    vl a(n);
    for(int i = 0; i < n; i++) cin >> a[i];

    vl b(200010, linf);
    stack<pair<ll,ll>> undo;
    for(int i = n-1; i >= 0; i--){
        int p = lower_bound(all(b), -a[i]-x) - b.begin();
        undo.emplace(p, b[p]);
        b[p] = -a[i]-x;
    }

    vl c(200010, linf);
    int len = 0;
    int ans = 0;
    for(int i = 0; i < n; i++){
        b[undo.top().first] = undo.top().second;
        undo.pop();

        int p = lower_bound(all(c), a[i]) - c.begin();
        if(c[p] == linf) len++;
        if(c[p+1] == linf){
            assert(p+1 == len);
            ans = max(ans, len + (int)(lower_bound(all(b), -a[i]) - b.begin()));
        }
        c[p] = a[i];
    }

    cout << ans << "\n";
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3448 KB Output is correct
2 Correct 5 ms 3448 KB Output is correct
3 Correct 5 ms 3448 KB Output is correct
4 Correct 5 ms 3448 KB Output is correct
5 Correct 5 ms 3448 KB Output is correct
6 Correct 5 ms 3576 KB Output is correct
7 Correct 5 ms 3448 KB Output is correct
8 Correct 5 ms 3448 KB Output is correct
9 Correct 5 ms 3448 KB Output is correct
10 Correct 4 ms 3448 KB Output is correct
11 Correct 15 ms 3448 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3448 KB Output is correct
2 Correct 5 ms 3448 KB Output is correct
3 Correct 5 ms 3448 KB Output is correct
4 Correct 5 ms 3448 KB Output is correct
5 Correct 5 ms 3448 KB Output is correct
6 Correct 5 ms 3576 KB Output is correct
7 Correct 5 ms 3448 KB Output is correct
8 Correct 5 ms 3448 KB Output is correct
9 Correct 5 ms 3448 KB Output is correct
10 Correct 4 ms 3448 KB Output is correct
11 Correct 15 ms 3448 KB Output is correct
12 Correct 4 ms 3448 KB Output is correct
13 Correct 4 ms 3448 KB Output is correct
14 Correct 4 ms 3448 KB Output is correct
15 Correct 5 ms 3448 KB Output is correct
16 Correct 4 ms 3452 KB Output is correct
17 Correct 4 ms 3448 KB Output is correct
18 Correct 4 ms 3448 KB Output is correct

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3448 KB Output is correct
2 Correct 5 ms 3448 KB Output is correct
3 Correct 5 ms 3448 KB Output is correct
4 Correct 5 ms 3448 KB Output is correct
5 Correct 5 ms 3448 KB Output is correct
6 Correct 5 ms 3576 KB Output is correct
7 Correct 5 ms 3448 KB Output is correct
8 Correct 5 ms 3448 KB Output is correct
9 Correct 5 ms 3448 KB Output is correct
10 Correct 4 ms 3448 KB Output is correct
11 Correct 15 ms 3448 KB Output is correct
12 Correct 4 ms 3448 KB Output is correct
13 Correct 4 ms 3448 KB Output is correct
14 Correct 4 ms 3448 KB Output is correct
15 Correct 5 ms 3448 KB Output is correct
16 Correct 4 ms 3452 KB Output is correct
17 Correct 4 ms 3448 KB Output is correct
18 Correct 4 ms 3448 KB Output is correct
19 Correct 5 ms 3448 KB Output is correct
20 Incorrect 5 ms 3448 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 8568 KB Output is correct
2 Correct 68 ms 8668 KB Output is correct
3 Correct 69 ms 8696 KB Output is correct
4 Correct 68 ms 8568 KB Output is correct
5 Correct 58 ms 8568 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 4952 KB Output is correct
2 Correct 20 ms 4984 KB Output is correct
3 Correct 20 ms 4984 KB Output is correct
4 Correct 18 ms 4984 KB Output is correct
5 Correct 5 ms 3448 KB Output is correct
6 Correct 20 ms 4984 KB Output is correct
7 Correct 18 ms 4984 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 6264 KB Output is correct
2 Correct 37 ms 6264 KB Output is correct
3 Correct 68 ms 8540 KB Output is correct
4 Correct 58 ms 8572 KB Output is correct
5 Correct 35 ms 6136 KB Output is correct
6 Correct 53 ms 8312 KB Output is correct
7 Correct 68 ms 8284 KB Output is correct
8 Correct 31 ms 6136 KB Output is correct

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3448 KB Output is correct
2 Correct 5 ms 3448 KB Output is correct
3 Correct 5 ms 3448 KB Output is correct
4 Correct 5 ms 3448 KB Output is correct
5 Correct 5 ms 3448 KB Output is correct
6 Correct 5 ms 3576 KB Output is correct
7 Correct 5 ms 3448 KB Output is correct
8 Correct 5 ms 3448 KB Output is correct
9 Correct 5 ms 3448 KB Output is correct
10 Correct 4 ms 3448 KB Output is correct
11 Correct 15 ms 3448 KB Output is correct
12 Correct 4 ms 3448 KB Output is correct
13 Correct 4 ms 3448 KB Output is correct
14 Correct 4 ms 3448 KB Output is correct
15 Correct 5 ms 3448 KB Output is correct
16 Correct 4 ms 3452 KB Output is correct
17 Correct 4 ms 3448 KB Output is correct
18 Correct 4 ms 3448 KB Output is correct
19 Correct 5 ms 3448 KB Output is correct
20 Incorrect 5 ms 3448 KB Output isn't correct
21 Halted 0 ms 0 KB -