oj.uz

답안 #638361

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
638361 2022-09-05T16:02:42 Z shmad Feast (NOI19_feast) C++17
30 / 100
 219 ms 18556 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 (i == 1) {
			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 2580 KB Output is correct
2 Correct 30 ms 2588 KB Output is correct
3 Correct 29 ms 2652 KB Output is correct
4 Correct 29 ms 2552 KB Output is correct
5 Correct 35 ms 2620 KB Output is correct
6 Correct 26 ms 2516 KB Output is correct
7 Correct 28 ms 2508 KB Output is correct
8 Correct 29 ms 2648 KB Output is correct
9 Correct 28 ms 2540 KB Output is correct
10 Correct 31 ms 2648 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 23 ms 2568 KB Output is correct
2 Correct 19 ms 2668 KB Output is correct
3 Correct 26 ms 2636 KB Output is correct
4 Correct 18 ms 2644 KB Output is correct
5 Correct 31 ms 2508 KB Output is correct
6 Correct 28 ms 2576 KB Output is correct
7 Correct 19 ms 2740 KB Output is correct
8 Correct 29 ms 2640 KB Output is correct
9 Correct 27 ms 2508 KB Output is correct
10 Correct 18 ms 2660 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 187 ms 15304 KB Output is correct
2 Correct 209 ms 15380 KB Output is correct
3 Correct 206 ms 18348 KB Output is correct
4 Correct 191 ms 18092 KB Output is correct
5 Correct 213 ms 18308 KB Output is correct
6 Correct 210 ms 18448 KB Output is correct
7 Correct 185 ms 18488 KB Output is correct
8 Correct 193 ms 18316 KB Output is correct
9 Correct 219 ms 18508 KB Output is correct
10 Correct 193 ms 18556 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 1 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 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 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 1 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 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 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 1 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 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 28 ms 2580 KB Output is correct
2 Correct 30 ms 2588 KB Output is correct
3 Correct 29 ms 2652 KB Output is correct
4 Correct 29 ms 2552 KB Output is correct
5 Correct 35 ms 2620 KB Output is correct
6 Correct 26 ms 2516 KB Output is correct
7 Correct 28 ms 2508 KB Output is correct
8 Correct 29 ms 2648 KB Output is correct
9 Correct 28 ms 2540 KB Output is correct
10 Correct 31 ms 2648 KB Output is correct
11 Correct 23 ms 2568 KB Output is correct
12 Correct 19 ms 2668 KB Output is correct
13 Correct 26 ms 2636 KB Output is correct
14 Correct 18 ms 2644 KB Output is correct
15 Correct 31 ms 2508 KB Output is correct
16 Correct 28 ms 2576 KB Output is correct
17 Correct 19 ms 2740 KB Output is correct
18 Correct 29 ms 2640 KB Output is correct
19 Correct 27 ms 2508 KB Output is correct
20 Correct 18 ms 2660 KB Output is correct
21 Correct 187 ms 15304 KB Output is correct
22 Correct 209 ms 15380 KB Output is correct
23 Correct 206 ms 18348 KB Output is correct
24 Correct 191 ms 18092 KB Output is correct
25 Correct 213 ms 18308 KB Output is correct
26 Correct 210 ms 18448 KB Output is correct
27 Correct 185 ms 18488 KB Output is correct
28 Correct 193 ms 18316 KB Output is correct
29 Correct 219 ms 18508 KB Output is correct
30 Correct 193 ms 18556 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 1 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 0 ms 340 KB Output isn't correct
39 Halted 0 ms 0 KB -