oj.uz

Submission #1076312

# Submission time Handle Problem Language Result Execution time Memory
1076312 2024-08-26T12:54:02 Z daoquanglinh2007 Candies (JOI18_candies) C++17
100 / 100
 602 ms 43860 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define int long long
#define viii vector <vector <vector <int> > >
 
const int NM = 2e5, inf = 1e18;
 
int n, a[NM+5];
int res[NM/2+5][2][2], tmp[NM/2+5];
 
void process(int l, int r, int j, int k, int nj, int nk, viii &f, viii &g){
	int cur = 0;
	tmp[0] = 0;
	for (int i = 1; i <= (r-l+2)/2; i++){
		while (cur+1 <= i){
			int val1 = f[cur][j][nj]+g[i-cur][nk][k], val2 = f[cur+1][j][nj]+g[i-cur-1][nk][k];
			if (val1 < 0) val1 = -inf;
			if (val2 < 0) val2 = -inf;
			if (val1 <= val2) cur++;
			else break;
		}
		tmp[i] = f[cur][j][nj]+g[i-cur][nk][k];
	}
}
 
void dnc(int l, int r){
	if (l == r){
		for (int i = 0; i < 2; i++)
			for (int j = 0; j < 2; j++){
				res[0][i][j] = 0;
				if (i&j) res[1][i][j] = a[l]; else res[1][i][j] = -inf;
			}
		return;
	}
	int mid = (l+r)/2;
	dnc(l, mid);
	vector <vector <vector <int> > > f((r-l+2)/2+1), g((r-l+2)/2+1);
	for (int i = 0; i <= (r-l+2)/2; i++){
		f[i].resize(2, vector <int>(2));
		for (int j = 0; j < 2; j++)
			for (int k = 0; k < 2; k++)
				f[i][j][k] = (i <= (mid-l+2)/2 ? res[i][j][k] : -inf);
	}
	dnc(mid+1, r);
	for (int i = 0; i <= (r-l+2)/2; i++){
		g[i].resize(2, vector <int>(2));
		for (int j = 0; j < 2; j++)
			for (int k = 0; k < 2; k++)
				g[i][j][k] = (i <= (r-mid+1)/2 ? res[i][j][k] : -inf);
	}
	
	for (int j = 0; j < 2; j++)
		for (int k = 0; k < 2; k++){
			process(l, r, j, k, 0, 1, f, g);
			for (int i = 0; i <= (r-l+2)/2; i++)
				res[i][j][k] = tmp[i];
			process(l, r, j, k, 1, 0, f, g);
			for (int i = 0; i <= (r-l+2)/2; i++)
				res[i][j][k] = max(res[i][j][k], tmp[i]);
			for (int i = 0; i <= (r-l+2)/2; i++)
				for (int nj = 0; nj < 2; nj++)
					for (int nk = 0; nk < 2; nk++)
						if (nj <= j && nk <= k) res[i][j][k] = max(res[i][j][k], res[i][nj][nk]);
		}
}
 
signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	
	cin >> n;
	for (int i = 1; i <= n; i++) cin >> a[i];
	dnc(1, n);
	
	for (int i = 1; i <= (n+1)/2; i++)
		cout << res[i][1][1] << '\n';
	return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 860 KB Output is correct
2 Correct 7 ms 832 KB Output is correct
3 Correct 4 ms 860 KB Output is correct
4 Correct 4 ms 860 KB Output is correct
5 Correct 4 ms 880 KB Output is correct
6 Correct 5 ms 860 KB Output is correct
7 Correct 5 ms 860 KB Output is correct
8 Correct 4 ms 860 KB Output is correct
9 Correct 6 ms 860 KB Output is correct
10 Correct 4 ms 860 KB Output is correct
11 Correct 4 ms 856 KB Output is correct
12 Correct 4 ms 860 KB Output is correct
13 Correct 4 ms 860 KB Output is correct
14 Correct 4 ms 864 KB Output is correct
15 Correct 4 ms 860 KB Output is correct
16 Correct 4 ms 860 KB Output is correct
17 Correct 4 ms 860 KB Output is correct
18 Correct 4 ms 860 KB Output is correct
19 Correct 4 ms 860 KB Output is correct
20 Correct 4 ms 860 KB Output is correct

Subtask #2
92.0 / 92.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 860 KB Output is correct
2 Correct 7 ms 832 KB Output is correct
3 Correct 4 ms 860 KB Output is correct
4 Correct 4 ms 860 KB Output is correct
5 Correct 4 ms 880 KB Output is correct
6 Correct 5 ms 860 KB Output is correct
7 Correct 5 ms 860 KB Output is correct
8 Correct 4 ms 860 KB Output is correct
9 Correct 6 ms 860 KB Output is correct
10 Correct 4 ms 860 KB Output is correct
11 Correct 4 ms 856 KB Output is correct
12 Correct 4 ms 860 KB Output is correct
13 Correct 4 ms 860 KB Output is correct
14 Correct 4 ms 864 KB Output is correct
15 Correct 4 ms 860 KB Output is correct
16 Correct 4 ms 860 KB Output is correct
17 Correct 4 ms 860 KB Output is correct
18 Correct 4 ms 860 KB Output is correct
19 Correct 4 ms 860 KB Output is correct
20 Correct 4 ms 860 KB Output is correct
21 Correct 587 ms 43604 KB Output is correct
22 Correct 602 ms 43604 KB Output is correct
23 Correct 596 ms 43856 KB Output is correct
24 Correct 546 ms 43448 KB Output is correct
25 Correct 557 ms 43600 KB Output is correct
26 Correct 557 ms 43600 KB Output is correct
27 Correct 561 ms 43604 KB Output is correct
28 Correct 567 ms 43604 KB Output is correct
29 Correct 577 ms 43600 KB Output is correct
30 Correct 560 ms 43728 KB Output is correct
31 Correct 552 ms 43600 KB Output is correct
32 Correct 561 ms 43676 KB Output is correct
33 Correct 565 ms 43332 KB Output is correct
34 Correct 564 ms 43604 KB Output is correct
35 Correct 558 ms 43860 KB Output is correct
36 Correct 583 ms 43600 KB Output is correct
37 Correct 581 ms 43640 KB Output is correct
38 Correct 593 ms 43572 KB Output is correct
39 Correct 537 ms 43460 KB Output is correct
40 Correct 565 ms 43480 KB Output is correct
41 Correct 547 ms 43420 KB Output is correct
42 Correct 544 ms 43592 KB Output is correct
43 Correct 561 ms 43600 KB Output is correct
44 Correct 554 ms 43608 KB Output is correct
45 Correct 581 ms 43804 KB Output is correct
46 Correct 540 ms 43604 KB Output is correct
47 Correct 567 ms 43600 KB Output is correct
48 Correct 561 ms 43344 KB Output is correct
49 Correct 589 ms 43600 KB Output is correct
50 Correct 555 ms 43348 KB Output is correct