답안 #1026033

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1026033	2024-07-17T13:08:33 Z	fv3	Feast (NOI19_feast)	C++14	12 / 100	34 ms	8800 KB

feast

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

vector<ll> a, b;

ll res;
ll solve(ll pun)
{
	res = 0;
	ll last = -pun;
	ll seg_cnt = 0;

	for (auto n : b)
	{
		if (n > 0)
		{
			last += n;
			continue;
		}
		
		if (n < -pun)
		{
			if (last > 0)
			{
				res += last;
				seg_cnt++;
			}

			last = -pun;
		}
		else
		{
			last += n;
		}

		if (last < -pun)
			last = -pun;
	}

	if (last > 0)
	{
		res += last;
		seg_cnt++;
	}

	return seg_cnt;
}

int main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);

	ll N, K;
	cin >> N >> K;
	for (int i = 0; i < N; i++)
	{
		ll n; cin >> n;
		if (n != 0)
			a.push_back(n);
	}

	N = a.size();

	{
		int i = 0;
		while (i < N && a[i] < 0) i++;

		ll sum = a[i];

		for (i++; i < N; i++)
		{
			if ((a[i-1] ^ a[i]) < 0)
			{
				b.push_back(sum);
				sum = 0;
			}
			sum += a[i];
		}

		if (sum != 0)
			b.push_back(sum);

		if (b.back() <= 0) 
			b.pop_back();
	}

	ll l = 0ll; 
	ll r = 1000000000000000000ll;

	while (l < r)
	{
		ll c = (l + r) / 2ll;

		if (solve(c) > K)
			l = c + 1;
		else
			r = c;
	}

	solve(l);
	cout << res + K * l << '\n';

	return 0;
}

Subtask #1

4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	22 ms	7360 KB	Output is correct
2	Correct	22 ms	7380 KB	Output is correct
3	Correct	22 ms	7376 KB	Output is correct
4	Correct	22 ms	7112 KB	Output is correct
5	Correct	22 ms	7376 KB	Output is correct
6	Correct	25 ms	7380 KB	Output is correct
7	Correct	21 ms	7244 KB	Output is correct
8	Correct	21 ms	7116 KB	Output is correct
9	Correct	21 ms	7376 KB	Output is correct
10	Correct	27 ms	7376 KB	Output is correct

Subtask #2

8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	14 ms	5588 KB	Output is correct
2	Correct	14 ms	5684 KB	Output is correct
3	Correct	14 ms	5588 KB	Output is correct
4	Correct	14 ms	5588 KB	Output is correct
5	Correct	23 ms	7380 KB	Output is correct
6	Correct	14 ms	5704 KB	Output is correct
7	Correct	14 ms	5844 KB	Output is correct
8	Correct	32 ms	7156 KB	Output is correct
9	Correct	21 ms	7380 KB	Output is correct
10	Correct	14 ms	5676 KB	Output is correct

Subtask #3

0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	34 ms	8800 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #4

0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	1 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	452 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Incorrect	0 ms	348 KB	Output isn't correct
9	Halted	0 ms	0 KB	-

Subtask #5

0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	1 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	452 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Incorrect	0 ms	348 KB	Output isn't correct
9	Halted	0 ms	0 KB	-

Subtask #6

0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	1 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	452 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Incorrect	0 ms	348 KB	Output isn't correct
9	Halted	0 ms	0 KB	-

Subtask #7

0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	22 ms	7360 KB	Output is correct
2	Correct	22 ms	7380 KB	Output is correct
3	Correct	22 ms	7376 KB	Output is correct
4	Correct	22 ms	7112 KB	Output is correct
5	Correct	22 ms	7376 KB	Output is correct
6	Correct	25 ms	7380 KB	Output is correct
7	Correct	21 ms	7244 KB	Output is correct
8	Correct	21 ms	7116 KB	Output is correct
9	Correct	21 ms	7376 KB	Output is correct
10	Correct	27 ms	7376 KB	Output is correct
11	Correct	14 ms	5588 KB	Output is correct
12	Correct	14 ms	5684 KB	Output is correct
13	Correct	14 ms	5588 KB	Output is correct
14	Correct	14 ms	5588 KB	Output is correct
15	Correct	23 ms	7380 KB	Output is correct
16	Correct	14 ms	5704 KB	Output is correct
17	Correct	14 ms	5844 KB	Output is correct
18	Correct	32 ms	7156 KB	Output is correct
19	Correct	21 ms	7380 KB	Output is correct
20	Correct	14 ms	5676 KB	Output is correct
21	Incorrect	34 ms	8800 KB	Output isn't correct
22	Halted	0 ms	0 KB	-