답안 #588039

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
588039	2022-07-02T16:28:39 Z	Temmie	Feast (NOI19_feast)	C++17	41 / 100	1000 ms	38452 KB

feast

#include <bits/stdc++.h>

typedef std::pair <long long, int> pa;

int n, k;
std::vector <int> a;

pa g(long long l) {
	std::vector <std::vector <pa>> dp(n, std::vector <pa> (2, { -1, -1 }));
	auto f = [&] (auto&& self, int i, bool is) -> pa {
		if (i >= n) {
			return { 0, 0 };
		}
		if (dp[i][is].second != -1) {
			return dp[i][is];
		}
		dp[i][is] = self(self, i + 1, false);
		pa cand = self(self, i + 1, true);
		cand.second += !is;
		cand.first += a[i];
		cand.first -= l * !is;
		dp[i][is] = std::max(dp[i][is], cand);
		return dp[i][is];
	};
	return f(f, 0, false);
}

int main() {
	std::ios::sync_with_stdio(0); std::cin.tie(0);
	
	std::cin >> n >> k;
	a.resize(n);
	for (int& x : a) {
		std::cin >> x;
	}
	long long l = 0, r = 1LL << 42, ans = 0;
	while (l <= r) {
		long long mid = (l + r) >> 1;
		pa val = g(mid);
		if (val.second > k) {
			l = mid + 1;
		} else {
			r = mid - 1;
			ans = val.first + mid * k;
		}
	}
	std::cout << ans << "\n";
	
}

Subtask #1

0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Execution timed out	1079 ms	38452 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

Subtask #2

0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Execution timed out	1058 ms	36496 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

Subtask #3

0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Execution timed out	1059 ms	38320 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

Subtask #4

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct

Subtask #5

11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	2 ms	464 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct

Subtask #6

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	2 ms	464 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	9 ms	468 KB	Output is correct
22	Correct	7 ms	468 KB	Output is correct
23	Correct	6 ms	468 KB	Output is correct
24	Correct	6 ms	552 KB	Output is correct
25	Correct	7 ms	468 KB	Output is correct
26	Correct	6 ms	556 KB	Output is correct
27	Correct	6 ms	468 KB	Output is correct
28	Correct	8 ms	468 KB	Output is correct
29	Correct	7 ms	552 KB	Output is correct
30	Correct	7 ms	468 KB	Output is correct

Subtask #7

0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Execution timed out	1079 ms	38452 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-