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답안 #638363

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
638363 2022-09-05T16:04:27 Z shmad Feast (NOI19_feast) C++17
30 / 100
 199 ms 15440 KB 
#pragma GCC optimize("O3", "unroll-loops") // "Ofast" 	
#pragma GCC target("avx2", "bmi", "bmi2", "lzcnt", "popcnt") 

#include <bits/stdc++.h>

#define int long long
#define vt vector
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define ff first
#define ss second
#define dbg(x) cerr << #x << " = " << x << '\n'
#define bit(x, i) ((x) >> (i) & 1)

using namespace std;
using ll = long long;
using pii = pair<ll, ll>;
using vvt = vt< vt<int> >;

const int N = 1e6 + 5, mod = 1e9 + 7, B = 500;
const ll inf = 1e18 + 7, LIM = (1ll << 60);
const double eps = 1e-6;

int n, k;
ll l[N], r[N];
ll a[N], b[N];

void solve () {
	cin >> n >> k;
	for (int i = 1; i <= n; i++) cin >> a[i];
	int m = 0;
	for (int i = 1; i <= n; i++) {
		if (m == 0) {
			if (a[i] > 0) b[++m] = a[i];
			continue;
		}
		if ((a[i] > 0 && b[m] > 0) || (a[i] < 0 && b[m] < 0)) b[m] += a[i];
		else b[++m] = a[i];
	}
	if (b[m] < 0) b[m--] = 0;
	multiset<pii> s;
	int cnt = 0;
	for (int i = 1; i <= m; i++) {
		s.insert({abs(b[i]), i});
		l[i] = i - 1;
		r[i] = i + 1;
		cnt += (b[i] > 0);    
	}
	while (cnt > k) {
		pii v = *s.begin();
		s.erase(s.begin());
		ll i = v.ss;
		if (b[i] > 0) cnt--;
        if (l[i] != 0) {
        	if (b[l[i]] > 0) cnt--;
        	s.erase({abs(b[l[i]]), l[i]});
        	b[i] += b[l[i]];
        	if (l[l[i]] != 0) r[l[l[i]]] = i;
        }
        if (r[i] != m + 1) {
        	if (b[r[i]] > 0) cnt--;
        	s.erase({abs(b[r[i]]), r[i]});
        	b[i] += b[r[i]];
        	if (r[r[i]] != m + 1) l[r[r[i]]] = i;
        }
        b[l[i]] = b[r[i]] = 0;
        l[i] = l[l[i]];
        r[i] = r[r[i]];
        if (b[i] < 0) {
        	if (l[i] == 0) l[r[i]] = b[i] = 0;
        	if (l[i] != 0 && r[i] == m + 1) r[l[i]] = m + 1, b[i] = 0;
        }
        s.insert({abs(b[i]), i});
        cnt += (b[i] > 0);
	}
	ll ans = 0;
	for (auto [val, i]: s) if (b[i] > 0) ans += b[i];
	cout << ans;
	cout << '\n';
}

bool testcases = 0;

signed main() {
#ifdef ONLINE_JUDGE
	freopen(".in", "r", stdin);
	freopen(".out", "w", stdout);
#endif
	cin.tie(0) -> sync_with_stdio(0);
	int test = 1;
	if (testcases) cin >> test;
	for (int cs = 1; cs <= test; cs++) {
		solve();
	}
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 2584 KB Output is correct
2 Correct 27 ms 2636 KB Output is correct
3 Correct 28 ms 2604 KB Output is correct
4 Correct 27 ms 2648 KB Output is correct
5 Correct 27 ms 2616 KB Output is correct
6 Correct 37 ms 2508 KB Output is correct
7 Correct 26 ms 2516 KB Output is correct
8 Correct 30 ms 2592 KB Output is correct
9 Correct 27 ms 2556 KB Output is correct
10 Correct 26 ms 2548 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 2644 KB Output is correct
2 Correct 22 ms 2692 KB Output is correct
3 Correct 20 ms 2568 KB Output is correct
4 Correct 18 ms 2644 KB Output is correct
5 Correct 27 ms 2516 KB Output is correct
6 Correct 18 ms 2644 KB Output is correct
7 Correct 18 ms 2644 KB Output is correct
8 Correct 30 ms 2648 KB Output is correct
9 Correct 27 ms 2508 KB Output is correct
10 Correct 20 ms 2640 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 193 ms 15360 KB Output is correct
2 Correct 188 ms 15168 KB Output is correct
3 Correct 187 ms 15336 KB Output is correct
4 Correct 190 ms 15304 KB Output is correct
5 Correct 190 ms 15308 KB Output is correct
6 Correct 185 ms 15396 KB Output is correct
7 Correct 199 ms 15440 KB Output is correct
8 Correct 190 ms 15220 KB Output is correct
9 Correct 186 ms 15436 KB Output is correct
10 Correct 187 ms 15424 KB Output is correct

Subtask #4
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Incorrect 1 ms 384 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Incorrect 1 ms 384 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Incorrect 1 ms 384 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #7
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 2584 KB Output is correct
2 Correct 27 ms 2636 KB Output is correct
3 Correct 28 ms 2604 KB Output is correct
4 Correct 27 ms 2648 KB Output is correct
5 Correct 27 ms 2616 KB Output is correct
6 Correct 37 ms 2508 KB Output is correct
7 Correct 26 ms 2516 KB Output is correct
8 Correct 30 ms 2592 KB Output is correct
9 Correct 27 ms 2556 KB Output is correct
10 Correct 26 ms 2548 KB Output is correct
11 Correct 20 ms 2644 KB Output is correct
12 Correct 22 ms 2692 KB Output is correct
13 Correct 20 ms 2568 KB Output is correct
14 Correct 18 ms 2644 KB Output is correct
15 Correct 27 ms 2516 KB Output is correct
16 Correct 18 ms 2644 KB Output is correct
17 Correct 18 ms 2644 KB Output is correct
18 Correct 30 ms 2648 KB Output is correct
19 Correct 27 ms 2508 KB Output is correct
20 Correct 20 ms 2640 KB Output is correct
21 Correct 193 ms 15360 KB Output is correct
22 Correct 188 ms 15168 KB Output is correct
23 Correct 187 ms 15336 KB Output is correct
24 Correct 190 ms 15304 KB Output is correct
25 Correct 190 ms 15308 KB Output is correct
26 Correct 185 ms 15396 KB Output is correct
27 Correct 199 ms 15440 KB Output is correct
28 Correct 190 ms 15220 KB Output is correct
29 Correct 186 ms 15436 KB Output is correct
30 Correct 187 ms 15424 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 0 ms 340 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 0 ms 340 KB Output is correct
35 Correct 0 ms 340 KB Output is correct
36 Correct 0 ms 340 KB Output is correct
37 Correct 0 ms 340 KB Output is correct
38 Incorrect 1 ms 384 KB Output isn't correct
39 Halted 0 ms 0 KB -