답안 #1017462

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1017462	2024-07-09T08:13:21 Z	anHiep	Feast (NOI19_feast)	C++14	100 / 100	119 ms	15232 KB

feast

#include<bits/stdc++.h>
#ifdef LOCAL
#include "D:\debug.h"
#else
#define cebug(...) "Orz_chUoNgnn_khanhtb_0x2ee08"
#endif

using namespace std;

#define int long long
#define fi first 
#define se second
#define pb push_back
#define ll long long
#define ii pair<int, int>
#define vi vector<int> 
#define vll vector<ll>
#define vii vector<ii>
#define cd complex<double>
const ll mod = 1e9 + 7;
const ll INF = 1e18L + 5;
const double PI = acos(-1);
const int block = 320;
const int N = 3e5;
int tc, tt = 1;

int n, k;
int a[N + 5];
ll dp[N + 5][2], cnt[N + 5][2];
void solve() {
	cin>>n>>k;
	for(int i=1; i<=n; i++) cin>>a[i];
	int l = 0, r = 1e12;
	ll ans = 0;
	while(l <= r) {
		int mid = (l + r)/2;
		dp[1][0] = 0;
		dp[1][1] = a[1] - mid;
		cnt[1][0] = 0;
		cnt[1][1] = 1;
		for(int i=2; i<=n; i++) {
			ll v1 = dp[i - 1][0] + a[i] - mid;
			ll v2 = dp[i - 1][1] + a[i];
			dp[i][1] = max(v1, v2);
			if(v1 == v2) cnt[i][1] = max(cnt[i - 1][0] + 1, cnt[i - 1][1]);
			else {
				if(dp[i][1] == v1) cnt[i][1] = cnt[i - 1][0] + 1;
				else cnt[i][1] = cnt[i - 1][1];
			}

			v1 = dp[i - 1][0];
			v2 = dp[i - 1][1];
			dp[i][0] = max(v1, v2);
			if(v1 == v2) cnt[i][0] = max(cnt[i - 1][0], cnt[i - 1][1]);
			else {
				if(dp[i][0] == v1) cnt[i][0] = cnt[i - 1][0];
				else cnt[i][0] = cnt[i - 1][1];
			}
		}
		ll seg = (dp[n][0] > dp[n][1] ? cnt[n][0] : cnt[n][1]);
		if(dp[n][0] == dp[n][1]) seg = max(cnt[n][0], cnt[n][1]);
		if(seg > k) l = mid + 1;
		else {
			if(seg <= k)
				ans = max(ans, max(dp[n][0], dp[n][1]) + mid * seg);
			r = mid - 1;
		}	
	}
	cout<<ans;
}
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    // freopen(".INP", "r", stdin);
    // freopen(".OUT", "w", stdout);
    for(tc=1; tc<=tt; tc++) solve();
    cerr<<"\nTime elapsed: "<<1000.0*clock()/CLOCKS_PER_SEC<<" ms.\n";
    return 0;
}

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	53 ms	14544 KB	Output is correct
2	Correct	59 ms	14676 KB	Output is correct
3	Correct	44 ms	14956 KB	Output is correct
4	Correct	47 ms	14912 KB	Output is correct
5	Correct	50 ms	14796 KB	Output is correct
6	Correct	46 ms	14624 KB	Output is correct
7	Correct	47 ms	14616 KB	Output is correct
8	Correct	52 ms	14740 KB	Output is correct
9	Correct	47 ms	14428 KB	Output is correct
10	Correct	47 ms	14800 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	42 ms	12892 KB	Output is correct
2	Correct	46 ms	13148 KB	Output is correct
3	Correct	38 ms	12992 KB	Output is correct
4	Correct	40 ms	12876 KB	Output is correct
5	Correct	57 ms	14632 KB	Output is correct
6	Correct	45 ms	12752 KB	Output is correct
7	Correct	55 ms	13320 KB	Output is correct
8	Correct	48 ms	14796 KB	Output is correct
9	Correct	65 ms	14592 KB	Output is correct
10	Correct	68 ms	13228 KB	Output is correct

Subtask #3
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	69 ms	14912 KB	Output is correct
2	Correct	67 ms	14680 KB	Output is correct
3	Correct	66 ms	14948 KB	Output is correct
4	Correct	61 ms	14676 KB	Output is correct
5	Correct	63 ms	14932 KB	Output is correct
6	Correct	69 ms	14940 KB	Output is correct
7	Correct	63 ms	14932 KB	Output is correct
8	Correct	61 ms	14932 KB	Output is correct
9	Correct	66 ms	15192 KB	Output is correct
10	Correct	62 ms	15144 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	메모리	Grader output
1	Correct	344 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	348 KB	Output is correct
5	Correct	348 KB	Output is correct
6	Correct	348 KB	Output is correct
7	Correct	348 KB	Output is correct
8	Correct	348 KB	Output is correct
9	Correct	348 KB	Output is correct
10	Correct	348 KB	Output is correct

Subtask #5
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	1 ms	460 KB	Output is correct
16	Correct	0 ms	468 KB	Output is correct
17	Correct	0 ms	344 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct

Subtask #6
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	1 ms	460 KB	Output is correct
16	Correct	0 ms	468 KB	Output is correct
17	Correct	0 ms	344 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	344 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	344 KB	Output is correct
26	Correct	1 ms	476 KB	Output is correct
27	Correct	1 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	1 ms	348 KB	Output is correct
30	Correct	1 ms	348 KB	Output is correct

Subtask #7
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	53 ms	14544 KB	Output is correct
2	Correct	59 ms	14676 KB	Output is correct
3	Correct	44 ms	14956 KB	Output is correct
4	Correct	47 ms	14912 KB	Output is correct
5	Correct	50 ms	14796 KB	Output is correct
6	Correct	46 ms	14624 KB	Output is correct
7	Correct	47 ms	14616 KB	Output is correct
8	Correct	52 ms	14740 KB	Output is correct
9	Correct	47 ms	14428 KB	Output is correct
10	Correct	47 ms	14800 KB	Output is correct
11	Correct	42 ms	12892 KB	Output is correct
12	Correct	46 ms	13148 KB	Output is correct
13	Correct	38 ms	12992 KB	Output is correct
14	Correct	40 ms	12876 KB	Output is correct
15	Correct	57 ms	14632 KB	Output is correct
16	Correct	45 ms	12752 KB	Output is correct
17	Correct	55 ms	13320 KB	Output is correct
18	Correct	48 ms	14796 KB	Output is correct
19	Correct	65 ms	14592 KB	Output is correct
20	Correct	68 ms	13228 KB	Output is correct
21	Correct	69 ms	14912 KB	Output is correct
22	Correct	67 ms	14680 KB	Output is correct
23	Correct	66 ms	14948 KB	Output is correct
24	Correct	61 ms	14676 KB	Output is correct
25	Correct	63 ms	14932 KB	Output is correct
26	Correct	69 ms	14940 KB	Output is correct
27	Correct	63 ms	14932 KB	Output is correct
28	Correct	61 ms	14932 KB	Output is correct
29	Correct	66 ms	15192 KB	Output is correct
30	Correct	62 ms	15144 KB	Output is correct
31	Correct	0 ms	344 KB	Output is correct
32	Correct	0 ms	348 KB	Output is correct
33	Correct	0 ms	348 KB	Output is correct
34	Correct	0 ms	348 KB	Output is correct
35	Correct	0 ms	348 KB	Output is correct
36	Correct	0 ms	348 KB	Output is correct
37	Correct	0 ms	348 KB	Output is correct
38	Correct	0 ms	348 KB	Output is correct
39	Correct	0 ms	348 KB	Output is correct
40	Correct	0 ms	348 KB	Output is correct
41	Correct	0 ms	344 KB	Output is correct
42	Correct	1 ms	348 KB	Output is correct
43	Correct	0 ms	348 KB	Output is correct
44	Correct	0 ms	348 KB	Output is correct
45	Correct	1 ms	460 KB	Output is correct
46	Correct	0 ms	468 KB	Output is correct
47	Correct	0 ms	344 KB	Output is correct
48	Correct	0 ms	348 KB	Output is correct
49	Correct	0 ms	348 KB	Output is correct
50	Correct	1 ms	348 KB	Output is correct
51	Correct	1 ms	344 KB	Output is correct
52	Correct	1 ms	348 KB	Output is correct
53	Correct	1 ms	348 KB	Output is correct
54	Correct	1 ms	348 KB	Output is correct
55	Correct	1 ms	344 KB	Output is correct
56	Correct	1 ms	476 KB	Output is correct
57	Correct	1 ms	348 KB	Output is correct
58	Correct	1 ms	348 KB	Output is correct
59	Correct	1 ms	348 KB	Output is correct
60	Correct	1 ms	348 KB	Output is correct
61	Correct	99 ms	14832 KB	Output is correct
62	Correct	98 ms	15232 KB	Output is correct
63	Correct	76 ms	14676 KB	Output is correct
64	Correct	103 ms	15112 KB	Output is correct
65	Correct	119 ms	14928 KB	Output is correct
66	Correct	105 ms	14932 KB	Output is correct
67	Correct	100 ms	14672 KB	Output is correct
68	Correct	68 ms	15184 KB	Output is correct
69	Correct	66 ms	14784 KB	Output is correct
70	Correct	72 ms	14672 KB	Output is correct

답안 #1017462

Compilation message

Subtask #1 4.0 / 4.0

Subtask #2 8.0 / 8.0

Subtask #3 18.0 / 18.0

Subtask #4 10.0 / 10.0

Subtask #5 11.0 / 11.0

Subtask #6 20.0 / 20.0

Subtask #7 29.0 / 29.0

Subtask #1
4.0 / 4.0

Subtask #2
8.0 / 8.0

Subtask #3
18.0 / 18.0

Subtask #4
10.0 / 10.0

Subtask #5
11.0 / 11.0

Subtask #6
20.0 / 20.0

Subtask #7
29.0 / 29.0