oj.uz

Submission #330826

# Submission time Handle Problem Language Result Execution time Memory
330826 2020-11-26T16:35:16 Z two_sides Feast (NOI19_feast) C++17
100 / 100
 409 ms 17388 KB 
#include <bits/stdc++.h>

using namespace std;

using ll = long long;

struct block {
    ll val;
    block *prev, *next;

    block(ll val): val(val) {
        prev = next = nullptr;
    }
};

using blockpt = block*;

struct compare {
    bool operator () (const blockpt &x,
    const blockpt &y) const {
        return abs(x->val) != abs(y->val) ?
        abs(x->val) < abs(y->val) : x < y;
    }
};

const int N = 3e5 + 5;

set <block*, compare> blocks;
int a[N]; block *b[N];

bool sign(const int &x) {
    return x <= 0 ? 0 : 1;
}

int main() {
    cin.tie(0)->sync_with_stdio(0);
    int n, k, m = 0, p = 0;
    cin >> n >> k;
    for (int i = 1; i <= n; cin >> a[i++]);
    for (int i = 1; i <= n; ) {
        int j = i; ll sum = 0;
        while (j <= n && sign(a[i])
        == sign(a[j])) sum += a[j++];
        if (sum > 0 || m > 0)
            b[m++] = new block(sum);
        i = j; p += sum > 0;
    }
    if (m > 0 && b[m - 1]->val < 0) m--;
    for (int i = 0; i < m; i++)
        blocks.insert(b[i]);
    for (int i = 1; i < m; i++) {
        b[i]->prev = b[i - 1];
        b[i - 1]->next = b[i];
    }
    while (p > k && blocks.size()) {
        blockpt it = *blocks.begin();
        blocks.erase(it);
        if (it->val > 0) p--;
        if (it->prev) {
            blocks.erase(it->prev);
            if (it->prev->val > 0) p--;
            it->val += it->prev->val;
            it->prev = it->prev->prev;
            if (it->prev)
                it->prev->next = it;
        }
        if (it->next) {
            blocks.erase(it->next);
            if (it->next->val > 0) p--;
            it->val += it->next->val;
            it->next = it->next->next;
            if (it->next)
                it->next->prev = it;
        }
        if (it->val <= 0) {
            if (!it->prev)
                it->next->prev = 0;
            else if (!it->next)
                it->prev->next = 0;
            else blocks.insert(it);
        }
        else {
            blocks.insert(it); p++;
        }
    }
    ll res = 0;
    for (auto it : blocks)
        res += max(0ll, it->val);
    cout << res << '\n';
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 1516 KB Output is correct
2 Correct 33 ms 1516 KB Output is correct
3 Correct 34 ms 1516 KB Output is correct
4 Correct 34 ms 1516 KB Output is correct
5 Correct 33 ms 1516 KB Output is correct
6 Correct 35 ms 1644 KB Output is correct
7 Correct 32 ms 1516 KB Output is correct
8 Correct 37 ms 1516 KB Output is correct
9 Correct 33 ms 1516 KB Output is correct
10 Correct 34 ms 1516 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 1516 KB Output is correct
2 Correct 23 ms 1516 KB Output is correct
3 Correct 22 ms 1516 KB Output is correct
4 Correct 28 ms 1516 KB Output is correct
5 Correct 43 ms 1516 KB Output is correct
6 Correct 23 ms 1516 KB Output is correct
7 Correct 24 ms 1644 KB Output is correct
8 Correct 34 ms 1516 KB Output is correct
9 Correct 35 ms 1644 KB Output is correct
10 Correct 24 ms 1644 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 375 ms 14316 KB Output is correct
2 Correct 372 ms 14188 KB Output is correct
3 Correct 373 ms 14188 KB Output is correct
4 Correct 369 ms 14208 KB Output is correct
5 Correct 362 ms 14188 KB Output is correct
6 Correct 378 ms 14316 KB Output is correct
7 Correct 391 ms 14316 KB Output is correct
8 Correct 386 ms 14444 KB Output is correct
9 Correct 371 ms 14316 KB Output is correct
10 Correct 398 ms 14444 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 2 ms 492 KB Output is correct
22 Correct 2 ms 492 KB Output is correct
23 Correct 1 ms 492 KB Output is correct
24 Correct 1 ms 492 KB Output is correct
25 Correct 1 ms 512 KB Output is correct
26 Correct 1 ms 492 KB Output is correct
27 Correct 1 ms 492 KB Output is correct
28 Correct 1 ms 492 KB Output is correct
29 Correct 2 ms 492 KB Output is correct
30 Correct 1 ms 492 KB Output is correct

Subtask #7
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 1516 KB Output is correct
2 Correct 33 ms 1516 KB Output is correct
3 Correct 34 ms 1516 KB Output is correct
4 Correct 34 ms 1516 KB Output is correct
5 Correct 33 ms 1516 KB Output is correct
6 Correct 35 ms 1644 KB Output is correct
7 Correct 32 ms 1516 KB Output is correct
8 Correct 37 ms 1516 KB Output is correct
9 Correct 33 ms 1516 KB Output is correct
10 Correct 34 ms 1516 KB Output is correct
11 Correct 22 ms 1516 KB Output is correct
12 Correct 23 ms 1516 KB Output is correct
13 Correct 22 ms 1516 KB Output is correct
14 Correct 28 ms 1516 KB Output is correct
15 Correct 43 ms 1516 KB Output is correct
16 Correct 23 ms 1516 KB Output is correct
17 Correct 24 ms 1644 KB Output is correct
18 Correct 34 ms 1516 KB Output is correct
19 Correct 35 ms 1644 KB Output is correct
20 Correct 24 ms 1644 KB Output is correct
21 Correct 375 ms 14316 KB Output is correct
22 Correct 372 ms 14188 KB Output is correct
23 Correct 373 ms 14188 KB Output is correct
24 Correct 369 ms 14208 KB Output is correct
25 Correct 362 ms 14188 KB Output is correct
26 Correct 378 ms 14316 KB Output is correct
27 Correct 391 ms 14316 KB Output is correct
28 Correct 386 ms 14444 KB Output is correct
29 Correct 371 ms 14316 KB Output is correct
30 Correct 398 ms 14444 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 1 ms 364 KB Output is correct
37 Correct 1 ms 364 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 1 ms 364 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 1 ms 364 KB Output is correct
42 Correct 1 ms 364 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 1 ms 364 KB Output is correct
45 Correct 1 ms 364 KB Output is correct
46 Correct 1 ms 364 KB Output is correct
47 Correct 1 ms 364 KB Output is correct
48 Correct 1 ms 364 KB Output is correct
49 Correct 1 ms 364 KB Output is correct
50 Correct 1 ms 364 KB Output is correct
51 Correct 2 ms 492 KB Output is correct
52 Correct 2 ms 492 KB Output is correct
53 Correct 1 ms 492 KB Output is correct
54 Correct 1 ms 492 KB Output is correct
55 Correct 1 ms 512 KB Output is correct
56 Correct 1 ms 492 KB Output is correct
57 Correct 1 ms 492 KB Output is correct
58 Correct 1 ms 492 KB Output is correct
59 Correct 2 ms 492 KB Output is correct
60 Correct 1 ms 492 KB Output is correct
61 Correct 252 ms 16976 KB Output is correct
62 Correct 183 ms 17388 KB Output is correct
63 Correct 348 ms 17024 KB Output is correct
64 Correct 250 ms 17244 KB Output is correct
65 Correct 283 ms 17260 KB Output is correct
66 Correct 313 ms 17260 KB Output is correct
67 Correct 287 ms 17004 KB Output is correct
68 Correct 365 ms 17388 KB Output is correct
69 Correct 409 ms 17004 KB Output is correct
70 Correct 359 ms 16876 KB Output is correct