oj.uz

답안 #638360

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
638360 2022-09-05T15:59:59 Z shmad Feast (NOI19_feast) C++17
12 / 100
 181 ms 15352 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);    
	}
	r[m] = 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] != 0) {
        	if (b[r[i]] > 0) cnt--;
        	s.erase({abs(b[r[i]]), r[i]});
        	b[i] += b[r[i]];
        	if (r[r[i]] != 0) 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) {
        	s.insert({abs(b[i]), i});
			cnt++;
			continue;
        }
        if (l[i] == 0) l[r[i]] = b[i] = 0;
        else if (r[i] == 0) r[l[i]] = 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 29 ms 2508 KB Output is correct
2 Correct 34 ms 2556 KB Output is correct
3 Correct 35 ms 2632 KB Output is correct
4 Correct 27 ms 2636 KB Output is correct
5 Correct 28 ms 2612 KB Output is correct
6 Correct 27 ms 2544 KB Output is correct
7 Correct 27 ms 2516 KB Output is correct
8 Correct 27 ms 2576 KB Output is correct
9 Correct 30 ms 2516 KB Output is correct
10 Correct 27 ms 2604 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 19 ms 2644 KB Output is correct
3 Correct 21 ms 2644 KB Output is correct
4 Correct 27 ms 2636 KB Output is correct
5 Correct 34 ms 2496 KB Output is correct
6 Correct 20 ms 2644 KB Output is correct
7 Correct 18 ms 2644 KB Output is correct
8 Correct 28 ms 2616 KB Output is correct
9 Correct 28 ms 2612 KB Output is correct
10 Correct 20 ms 2628 KB Output is correct

Subtask #3
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 181 ms 15352 KB Output is correct
2 Incorrect 179 ms 15164 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Incorrect 1 ms 340 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Incorrect 1 ms 340 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Incorrect 1 ms 340 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #7
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 29 ms 2508 KB Output is correct
2 Correct 34 ms 2556 KB Output is correct
3 Correct 35 ms 2632 KB Output is correct
4 Correct 27 ms 2636 KB Output is correct
5 Correct 28 ms 2612 KB Output is correct
6 Correct 27 ms 2544 KB Output is correct
7 Correct 27 ms 2516 KB Output is correct
8 Correct 27 ms 2576 KB Output is correct
9 Correct 30 ms 2516 KB Output is correct
10 Correct 27 ms 2604 KB Output is correct
11 Correct 20 ms 2644 KB Output is correct
12 Correct 19 ms 2644 KB Output is correct
13 Correct 21 ms 2644 KB Output is correct
14 Correct 27 ms 2636 KB Output is correct
15 Correct 34 ms 2496 KB Output is correct
16 Correct 20 ms 2644 KB Output is correct
17 Correct 18 ms 2644 KB Output is correct
18 Correct 28 ms 2616 KB Output is correct
19 Correct 28 ms 2612 KB Output is correct
20 Correct 20 ms 2628 KB Output is correct
21 Correct 181 ms 15352 KB Output is correct
22 Incorrect 179 ms 15164 KB Output isn't correct
23 Halted 0 ms 0 KB -