답안 #1017670

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1017670	2024-07-09T09:25:36 Z	vjudge1	Feast (NOI19_feast)	C++17	100 / 100	88 ms	18320 KB

feast

#include<bits/stdc++.h>
using namespace std;
#ifdef ONPC
#include"debug.h"
#else
#define debug(...) 42
#endif
#define endl '\n'
#define ll long long
#define pii pair<int,int>
#define F first
#define S second
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) a.begin(),a.end()
#define int long long
template<class T> bool ckmin(T& a, const T& b) { return b < a ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { return a < b ? a = b, 1 : 0; }
const int mod = 1e9 + 7;
const int MAXN = 3e5 + 15;
const int inf = 0x3f3f3f3f;
const ll INF = 0x3f3f3f3f3f3f3f3f;
int a[MAXN], n, k;
int dp[4 * MAXN]; // i * 0 + 0, i * 0 + 1, i * 0 * 2, i * 0 + 3

char buf[1 << 25 | 1], *p1, *p2;
#define gc() ((p1==p2)?(p2=(p1=buf)+fread(buf,1,1<<25,stdin),p1==p2?EOF:*p1++):*p1++)
//#define gc() getchar()
ll R(){
	int x = 0, f = 0;
	char c = gc();
	while (!isdigit(c)){
		if (c == '-') f = 1;
		c = gc();
	}
	while (isdigit(c)){
		x = x * 10 + (c ^ 48);
		c = gc();
	}
	return f ? -x : x;
}

pii solve(ll lampda){
	dp[0 * 4 + 0] = 0;
	dp[0 * 4 + 1] = 0;
	dp[0 * 4 + 2] = -lampda;
	dp[0 * 4 + 3] = 1;
	for (int i = 1; i <= n; i++){
		dp[i * 4 + 0] = max(dp[(i - 1) * 4 + 0], dp[(i - 1) * 4 + 2]);
		dp[i * 4 + 1] = (dp[(i - 1) * 4 + 0] > dp[(i - 1) * 4 + 2] ? dp[(i - 1) * 4 + 1] : dp[(i - 1) * 4 + 3]);
		dp[i * 4 + 2] = max(dp[(i - 1) * 4 + 0] + a[i] - lampda, dp[(i - 1) * 4 + 2] + a[i]);
		dp[i * 4 + 3] = (dp[(i - 1) * 4 + 0] + a[i] - lampda > dp[(i - 1) * 4 + 2] + a[i] ? dp[(i - 1) * 4 + 1] + 1 : dp[(i - 1) * 4 + 3]);

		//dp[i][0] = max(dp[i - 1][0], dp[i - 1][1]);
		//dp[i][1] = max(make_pair(dp[i - 1][0].F + a[i] - lampda, dp[i - 1][0].S + 1), 
				//make_pair(dp[i - 1][1].F + a[i], dp[i - 1][1].S));
	}
	return max(pii(dp[n * 4 + 0], dp[n * 4 + 1]), pii(dp[n * 4 + 2], dp[n * 4 + 3]));
}

int32_t main(){
	n = R(), k = R();
	//cin >> n >> k;
	for (int i = 1; i <= n; i++){
		a[i] = R();
		//cin >> a[i];
	}
	ll lo = 0, hi = 1e13;
	while (hi - lo > 1){
		ll mi = (lo + hi) >> 1;
		if (solve(mi).S >= k){
			lo = mi;
		} else {
			hi = mi;
		}
	}
	cout << solve(lo).F + k * lo;
}

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	33 ms	18236 KB	Output is correct
2	Correct	38 ms	18280 KB	Output is correct
3	Correct	29 ms	18304 KB	Output is correct
4	Correct	44 ms	18292 KB	Output is correct
5	Correct	32 ms	18268 KB	Output is correct
6	Correct	28 ms	18260 KB	Output is correct
7	Correct	35 ms	18012 KB	Output is correct
8	Correct	34 ms	18280 KB	Output is correct
9	Correct	31 ms	18040 KB	Output is correct
10	Correct	29 ms	18268 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	16216 KB	Output is correct
2	Correct	35 ms	16220 KB	Output is correct
3	Correct	39 ms	16220 KB	Output is correct
4	Correct	29 ms	16220 KB	Output is correct
5	Correct	29 ms	18264 KB	Output is correct
6	Correct	34 ms	16220 KB	Output is correct
7	Correct	28 ms	16288 KB	Output is correct
8	Correct	30 ms	18320 KB	Output is correct
9	Correct	33 ms	18012 KB	Output is correct
10	Correct	27 ms	16220 KB	Output is correct

Subtask #3
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	52 ms	18268 KB	Output is correct
2	Correct	49 ms	18268 KB	Output is correct
3	Correct	47 ms	18276 KB	Output is correct
4	Correct	45 ms	18268 KB	Output is correct
5	Correct	45 ms	18292 KB	Output is correct
6	Correct	45 ms	18268 KB	Output is correct
7	Correct	46 ms	18292 KB	Output is correct
8	Correct	54 ms	18268 KB	Output is correct
9	Correct	50 ms	18308 KB	Output is correct
10	Correct	52 ms	18268 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4444 KB	Output is correct
2	Correct	1 ms	4444 KB	Output is correct
3	Correct	1 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4540 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4440 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct

Subtask #5
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4444 KB	Output is correct
2	Correct	1 ms	4444 KB	Output is correct
3	Correct	1 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4540 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4440 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	1 ms	4444 KB	Output is correct
14	Correct	1 ms	4444 KB	Output is correct
15	Correct	1 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	1 ms	4444 KB	Output is correct
18	Correct	1 ms	4440 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	1 ms	4944 KB	Output is correct

Subtask #6
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4444 KB	Output is correct
2	Correct	1 ms	4444 KB	Output is correct
3	Correct	1 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4540 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4440 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	1 ms	4444 KB	Output is correct
14	Correct	1 ms	4444 KB	Output is correct
15	Correct	1 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	1 ms	4444 KB	Output is correct
18	Correct	1 ms	4440 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	1 ms	4944 KB	Output is correct
21	Correct	1 ms	4444 KB	Output is correct
22	Correct	1 ms	4444 KB	Output is correct
23	Correct	1 ms	4444 KB	Output is correct
24	Correct	1 ms	4444 KB	Output is correct
25	Correct	1 ms	4488 KB	Output is correct
26	Correct	1 ms	4444 KB	Output is correct
27	Correct	1 ms	4440 KB	Output is correct
28	Correct	1 ms	4444 KB	Output is correct
29	Correct	1 ms	4444 KB	Output is correct
30	Correct	1 ms	4444 KB	Output is correct

Subtask #7
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	33 ms	18236 KB	Output is correct
2	Correct	38 ms	18280 KB	Output is correct
3	Correct	29 ms	18304 KB	Output is correct
4	Correct	44 ms	18292 KB	Output is correct
5	Correct	32 ms	18268 KB	Output is correct
6	Correct	28 ms	18260 KB	Output is correct
7	Correct	35 ms	18012 KB	Output is correct
8	Correct	34 ms	18280 KB	Output is correct
9	Correct	31 ms	18040 KB	Output is correct
10	Correct	29 ms	18268 KB	Output is correct
11	Correct	26 ms	16216 KB	Output is correct
12	Correct	35 ms	16220 KB	Output is correct
13	Correct	39 ms	16220 KB	Output is correct
14	Correct	29 ms	16220 KB	Output is correct
15	Correct	29 ms	18264 KB	Output is correct
16	Correct	34 ms	16220 KB	Output is correct
17	Correct	28 ms	16288 KB	Output is correct
18	Correct	30 ms	18320 KB	Output is correct
19	Correct	33 ms	18012 KB	Output is correct
20	Correct	27 ms	16220 KB	Output is correct
21	Correct	52 ms	18268 KB	Output is correct
22	Correct	49 ms	18268 KB	Output is correct
23	Correct	47 ms	18276 KB	Output is correct
24	Correct	45 ms	18268 KB	Output is correct
25	Correct	45 ms	18292 KB	Output is correct
26	Correct	45 ms	18268 KB	Output is correct
27	Correct	46 ms	18292 KB	Output is correct
28	Correct	54 ms	18268 KB	Output is correct
29	Correct	50 ms	18308 KB	Output is correct
30	Correct	52 ms	18268 KB	Output is correct
31	Correct	1 ms	4444 KB	Output is correct
32	Correct	1 ms	4444 KB	Output is correct
33	Correct	1 ms	4444 KB	Output is correct
34	Correct	1 ms	4444 KB	Output is correct
35	Correct	1 ms	4540 KB	Output is correct
36	Correct	1 ms	4444 KB	Output is correct
37	Correct	1 ms	4444 KB	Output is correct
38	Correct	1 ms	4440 KB	Output is correct
39	Correct	1 ms	4444 KB	Output is correct
40	Correct	1 ms	4444 KB	Output is correct
41	Correct	1 ms	4444 KB	Output is correct
42	Correct	1 ms	4444 KB	Output is correct
43	Correct	1 ms	4444 KB	Output is correct
44	Correct	1 ms	4444 KB	Output is correct
45	Correct	1 ms	4444 KB	Output is correct
46	Correct	1 ms	4444 KB	Output is correct
47	Correct	1 ms	4444 KB	Output is correct
48	Correct	1 ms	4440 KB	Output is correct
49	Correct	1 ms	4444 KB	Output is correct
50	Correct	1 ms	4944 KB	Output is correct
51	Correct	1 ms	4444 KB	Output is correct
52	Correct	1 ms	4444 KB	Output is correct
53	Correct	1 ms	4444 KB	Output is correct
54	Correct	1 ms	4444 KB	Output is correct
55	Correct	1 ms	4488 KB	Output is correct
56	Correct	1 ms	4444 KB	Output is correct
57	Correct	1 ms	4440 KB	Output is correct
58	Correct	1 ms	4444 KB	Output is correct
59	Correct	1 ms	4444 KB	Output is correct
60	Correct	1 ms	4444 KB	Output is correct
61	Correct	78 ms	18252 KB	Output is correct
62	Correct	77 ms	18236 KB	Output is correct
63	Correct	57 ms	18248 KB	Output is correct
64	Correct	85 ms	18280 KB	Output is correct
65	Correct	87 ms	18272 KB	Output is correct
66	Correct	88 ms	18288 KB	Output is correct
67	Correct	86 ms	18252 KB	Output is correct
68	Correct	58 ms	18292 KB	Output is correct
69	Correct	45 ms	18044 KB	Output is correct
70	Correct	43 ms	18232 KB	Output is correct

답안 #1017670

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