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답안 #995260

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
995260 2024-06-08T17:46:41 Z Yarema Feast (NOI19_feast) C++17
100 / 100
 136 ms 1628 KB 
#include <bits/stdc++.h>

using namespace std;

#define FOR(i, a, b) for(int i = (a); i < (b); i++)
#define RFOR(i, a, b) for(int i = (a) - 1; i >= (b); i--)
#define SZ(a) int(a.size())
#define ALL(a) a.begin(), a.end()
#define PB push_back
#define MP make_pair
#define F first
#define S second

typedef long long LL;
typedef vector<int> VI;
typedef pair<int, int> PII;
typedef double db;
typedef pair<db, int> PLI;

const LL INF = 1e12;

PLI f(VI& a, LL lambda)
{
	int n = SZ(a);
	PLI dp0 = {0, 0};
	PLI dp1 = {-INF, 0};
	FOR (i, 0, n)
	{
		PLI ndp0 = max(dp0, dp1);
		PLI ndp1 = max(PLI(dp0.F + a[i] - lambda, dp0.S + 1), PLI(dp1.F + a[i], dp1.S));
		
		dp0 = ndp0;
		dp1 = ndp1;
		//cerr << i << ' ' << dp0.F << ' ' << dp0.S << ' ' << dp1.F << ' ' << dp1.S << '\n';
	}
	return max(dp0, dp1);
}

int main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	
	int n, k;
	cin >> n >> k;
	VI a(n);
	FOR (i, 0, n)
		cin >> a[i];
	
	
	LL l = -1, r = INF;
	while (l + 1 < r)
	{
		LL m = (l + r) / 2;
		auto [val, cnt] = f(a, m);
		if (cnt > k)
			l = m;
		else
			r = m;
	}
	//cerr << r << '\n';
	auto [val, cnt] = f(a, r);
	cout << LL(val + cnt * r) << '\n';
	
	return 0;
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 39 ms 1372 KB Output is correct
2 Correct 39 ms 1372 KB Output is correct
3 Correct 39 ms 1628 KB Output is correct
4 Correct 53 ms 1624 KB Output is correct
5 Correct 42 ms 1368 KB Output is correct
6 Correct 57 ms 1372 KB Output is correct
7 Correct 39 ms 1368 KB Output is correct
8 Correct 39 ms 1628 KB Output is correct
9 Correct 40 ms 1372 KB Output is correct
10 Correct 40 ms 1536 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 1368 KB Output is correct
2 Correct 37 ms 1628 KB Output is correct
3 Correct 42 ms 1372 KB Output is correct
4 Correct 34 ms 1372 KB Output is correct
5 Correct 38 ms 1372 KB Output is correct
6 Correct 34 ms 1372 KB Output is correct
7 Correct 37 ms 1628 KB Output is correct
8 Correct 39 ms 1628 KB Output is correct
9 Correct 39 ms 1372 KB Output is correct
10 Correct 34 ms 1624 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 72 ms 1628 KB Output is correct
2 Correct 74 ms 1624 KB Output is correct
3 Correct 75 ms 1372 KB Output is correct
4 Correct 73 ms 1372 KB Output is correct
5 Correct 76 ms 1368 KB Output is correct
6 Correct 70 ms 1628 KB Output is correct
7 Correct 74 ms 1624 KB Output is correct
8 Correct 70 ms 1624 KB Output is correct
9 Correct 72 ms 1624 KB Output is correct
10 Correct 71 ms 1628 KB Output is correct

Subtask #4
10.0 / 10.0

# 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

Subtask #5
11.0 / 11.0

# 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 1 ms 348 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 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 388 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 1 ms 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 1 ms 348 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 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 388 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 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 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 344 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 39 ms 1372 KB Output is correct
2 Correct 39 ms 1372 KB Output is correct
3 Correct 39 ms 1628 KB Output is correct
4 Correct 53 ms 1624 KB Output is correct
5 Correct 42 ms 1368 KB Output is correct
6 Correct 57 ms 1372 KB Output is correct
7 Correct 39 ms 1368 KB Output is correct
8 Correct 39 ms 1628 KB Output is correct
9 Correct 40 ms 1372 KB Output is correct
10 Correct 40 ms 1536 KB Output is correct
11 Correct 45 ms 1368 KB Output is correct
12 Correct 37 ms 1628 KB Output is correct
13 Correct 42 ms 1372 KB Output is correct
14 Correct 34 ms 1372 KB Output is correct
15 Correct 38 ms 1372 KB Output is correct
16 Correct 34 ms 1372 KB Output is correct
17 Correct 37 ms 1628 KB Output is correct
18 Correct 39 ms 1628 KB Output is correct
19 Correct 39 ms 1372 KB Output is correct
20 Correct 34 ms 1624 KB Output is correct
21 Correct 72 ms 1628 KB Output is correct
22 Correct 74 ms 1624 KB Output is correct
23 Correct 75 ms 1372 KB Output is correct
24 Correct 73 ms 1372 KB Output is correct
25 Correct 76 ms 1368 KB Output is correct
26 Correct 70 ms 1628 KB Output is correct
27 Correct 74 ms 1624 KB Output is correct
28 Correct 70 ms 1624 KB Output is correct
29 Correct 72 ms 1624 KB Output is correct
30 Correct 71 ms 1628 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 1 ms 348 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 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 0 ms 388 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 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 348 KB Output is correct
56 Correct 1 ms 348 KB Output is correct
57 Correct 1 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 1 ms 344 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 127 ms 1372 KB Output is correct
62 Correct 119 ms 1624 KB Output is correct
63 Correct 95 ms 1372 KB Output is correct
64 Correct 132 ms 1624 KB Output is correct
65 Correct 136 ms 1624 KB Output is correct
66 Correct 135 ms 1624 KB Output is correct
67 Correct 133 ms 1372 KB Output is correct
68 Correct 75 ms 1624 KB Output is correct
69 Correct 71 ms 1368 KB Output is correct
70 Correct 72 ms 1372 KB Output is correct