답안 #1017466

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1017466	2024-07-09T08:14:11 Z	vjudge1	Feast (NOI19_feast)	C++17	100 / 100	106 ms	12124 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	41 ms	11612 KB	Output is correct
2	Correct	41 ms	11860 KB	Output is correct
3	Correct	44 ms	12124 KB	Output is correct
4	Correct	48 ms	11856 KB	Output is correct
5	Correct	42 ms	11816 KB	Output is correct
6	Correct	42 ms	11828 KB	Output is correct
7	Correct	41 ms	11840 KB	Output is correct
8	Correct	42 ms	11860 KB	Output is correct
9	Correct	40 ms	11844 KB	Output is correct
10	Correct	41 ms	11856 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	39 ms	11868 KB	Output is correct
2	Correct	37 ms	12120 KB	Output is correct
3	Correct	36 ms	11868 KB	Output is correct
4	Correct	36 ms	11864 KB	Output is correct
5	Correct	41 ms	11608 KB	Output is correct
6	Correct	50 ms	11868 KB	Output is correct
7	Correct	36 ms	12124 KB	Output is correct
8	Correct	41 ms	11912 KB	Output is correct
9	Correct	40 ms	11724 KB	Output is correct
10	Correct	41 ms	11864 KB	Output is correct

Subtask #3
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	70 ms	11860 KB	Output is correct
2	Correct	63 ms	11864 KB	Output is correct
3	Correct	66 ms	11860 KB	Output is correct
4	Correct	61 ms	11868 KB	Output is correct
5	Correct	69 ms	11876 KB	Output is correct
6	Correct	61 ms	11868 KB	Output is correct
7	Correct	61 ms	12120 KB	Output is correct
8	Correct	60 ms	11856 KB	Output is correct
9	Correct	62 ms	12116 KB	Output is correct
10	Correct	61 ms	12116 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	메모리	Grader output
1	Correct	348 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	메모리	Grader output
1	Correct	348 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
11	Correct	344 KB	Output is correct
12	Correct	348 KB	Output is correct
13	Correct	348 KB	Output is correct
14	Correct	600 KB	Output is correct
15	Correct	348 KB	Output is correct
16	Correct	348 KB	Output is correct
17	Correct	348 KB	Output is correct
18	Correct	348 KB	Output is correct
19	Correct	348 KB	Output is correct
20	Correct	348 KB	Output is correct

Subtask #6
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 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	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	600 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	0 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	432 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	1 ms	344 KB	Output is correct
27	Correct	1 ms	344 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	41 ms	11612 KB	Output is correct
2	Correct	41 ms	11860 KB	Output is correct
3	Correct	44 ms	12124 KB	Output is correct
4	Correct	48 ms	11856 KB	Output is correct
5	Correct	42 ms	11816 KB	Output is correct
6	Correct	42 ms	11828 KB	Output is correct
7	Correct	41 ms	11840 KB	Output is correct
8	Correct	42 ms	11860 KB	Output is correct
9	Correct	40 ms	11844 KB	Output is correct
10	Correct	41 ms	11856 KB	Output is correct
11	Correct	39 ms	11868 KB	Output is correct
12	Correct	37 ms	12120 KB	Output is correct
13	Correct	36 ms	11868 KB	Output is correct
14	Correct	36 ms	11864 KB	Output is correct
15	Correct	41 ms	11608 KB	Output is correct
16	Correct	50 ms	11868 KB	Output is correct
17	Correct	36 ms	12124 KB	Output is correct
18	Correct	41 ms	11912 KB	Output is correct
19	Correct	40 ms	11724 KB	Output is correct
20	Correct	41 ms	11864 KB	Output is correct
21	Correct	70 ms	11860 KB	Output is correct
22	Correct	63 ms	11864 KB	Output is correct
23	Correct	66 ms	11860 KB	Output is correct
24	Correct	61 ms	11868 KB	Output is correct
25	Correct	69 ms	11876 KB	Output is correct
26	Correct	61 ms	11868 KB	Output is correct
27	Correct	61 ms	12120 KB	Output is correct
28	Correct	60 ms	11856 KB	Output is correct
29	Correct	62 ms	12116 KB	Output is correct
30	Correct	61 ms	12116 KB	Output is correct
31	Correct	0 ms	348 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	0 ms	348 KB	Output is correct
43	Correct	0 ms	348 KB	Output is correct
44	Correct	0 ms	600 KB	Output is correct
45	Correct	0 ms	348 KB	Output is correct
46	Correct	0 ms	348 KB	Output is correct
47	Correct	0 ms	348 KB	Output is correct
48	Correct	0 ms	348 KB	Output is correct
49	Correct	0 ms	348 KB	Output is correct
50	Correct	0 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	432 KB	Output is correct
55	Correct	1 ms	348 KB	Output is correct
56	Correct	1 ms	344 KB	Output is correct
57	Correct	1 ms	344 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	11864 KB	Output is correct
62	Correct	106 ms	11928 KB	Output is correct
63	Correct	74 ms	11864 KB	Output is correct
64	Correct	101 ms	12088 KB	Output is correct
65	Correct	105 ms	12076 KB	Output is correct
66	Correct	100 ms	11856 KB	Output is correct
67	Correct	104 ms	11868 KB	Output is correct
68	Correct	79 ms	11864 KB	Output is correct
69	Correct	61 ms	11868 KB	Output is correct
70	Correct	60 ms	11600 KB	Output is correct

답안 #1017466

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