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답안 #638365

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
638365 2022-09-05T16:08:39 Z shmad Feast (NOI19_feast) C++17
30 / 100
 209 ms 15548 KB 
#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;
	set<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 26 ms 2516 KB Output is correct
2 Correct 29 ms 2628 KB Output is correct
3 Correct 37 ms 2648 KB Output is correct
4 Correct 29 ms 2568 KB Output is correct
5 Correct 31 ms 2700 KB Output is correct
6 Correct 29 ms 2492 KB Output is correct
7 Correct 26 ms 2532 KB Output is correct
8 Correct 28 ms 2572 KB Output is correct
9 Correct 33 ms 2604 KB Output is correct
10 Correct 28 ms 2664 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 2628 KB Output is correct
2 Correct 18 ms 2660 KB Output is correct
3 Correct 23 ms 2644 KB Output is correct
4 Correct 22 ms 2656 KB Output is correct
5 Correct 27 ms 2604 KB Output is correct
6 Correct 18 ms 2636 KB Output is correct
7 Correct 19 ms 2752 KB Output is correct
8 Correct 34 ms 2668 KB Output is correct
9 Correct 28 ms 2504 KB Output is correct
10 Correct 17 ms 2688 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 195 ms 15320 KB Output is correct
2 Correct 199 ms 15132 KB Output is correct
3 Correct 208 ms 15328 KB Output is correct
4 Correct 190 ms 15056 KB Output is correct
5 Correct 199 ms 15180 KB Output is correct
6 Correct 209 ms 15420 KB Output is correct
7 Correct 209 ms 15468 KB Output is correct
8 Correct 200 ms 15300 KB Output is correct
9 Correct 195 ms 15548 KB Output is correct
10 Correct 188 ms 15508 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 1 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 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Incorrect 0 ms 340 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 1 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 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Incorrect 0 ms 340 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 1 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 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Incorrect 0 ms 340 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #7
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 26 ms 2516 KB Output is correct
2 Correct 29 ms 2628 KB Output is correct
3 Correct 37 ms 2648 KB Output is correct
4 Correct 29 ms 2568 KB Output is correct
5 Correct 31 ms 2700 KB Output is correct
6 Correct 29 ms 2492 KB Output is correct
7 Correct 26 ms 2532 KB Output is correct
8 Correct 28 ms 2572 KB Output is correct
9 Correct 33 ms 2604 KB Output is correct
10 Correct 28 ms 2664 KB Output is correct
11 Correct 19 ms 2628 KB Output is correct
12 Correct 18 ms 2660 KB Output is correct
13 Correct 23 ms 2644 KB Output is correct
14 Correct 22 ms 2656 KB Output is correct
15 Correct 27 ms 2604 KB Output is correct
16 Correct 18 ms 2636 KB Output is correct
17 Correct 19 ms 2752 KB Output is correct
18 Correct 34 ms 2668 KB Output is correct
19 Correct 28 ms 2504 KB Output is correct
20 Correct 17 ms 2688 KB Output is correct
21 Correct 195 ms 15320 KB Output is correct
22 Correct 199 ms 15132 KB Output is correct
23 Correct 208 ms 15328 KB Output is correct
24 Correct 190 ms 15056 KB Output is correct
25 Correct 199 ms 15180 KB Output is correct
26 Correct 209 ms 15420 KB Output is correct
27 Correct 209 ms 15468 KB Output is correct
28 Correct 200 ms 15300 KB Output is correct
29 Correct 195 ms 15548 KB Output is correct
30 Correct 188 ms 15508 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 1 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 1 ms 340 KB Output is correct
37 Correct 0 ms 340 KB Output is correct
38 Incorrect 0 ms 340 KB Output isn't correct
39 Halted 0 ms 0 KB -