답안 #256833

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
256833	2020-08-03T09:18:59 Z	islingr	구경하기 (JOI13_watching)	C++17	100 / 100	176 ms	16508 KB

watching

#include <bits/stdc++.h>
using namespace std;

const int N = 1 << 11;
int n, P, Q, a[N], dp[N][N];

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	cin >> n >> P >> Q;
	for (int i = 1; i <= n; ++i) cin >> a[i];
	if (n <= P) return cout << 1, 0;
	sort(a + 1, a + n + 1);
	int l = 0, r = a[n];
	while (r - l > 1) {
		int w = l + (r - l + 1) / 2;
		for (int i = 1, j = 0, k = 0; i <= n; ++i) {
			while (w <= a[i] - a[j + 1]) ++j;
			while (2 * w <= a[i] - a[k + 1]) ++k;
			dp[i][0] = 1 + dp[k][0];
			for (int p = 1; p <= P; ++p) dp[i][p] = min(dp[j][p - 1], 1 + dp[k][p]);
		}
		(dp[n][P] <= Q ? r : l) = w;
	}
	cout << r;
}

Subtask #1

50.0 / 50.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	768 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	0 ms	384 KB	Output is correct
4	Correct	1 ms	288 KB	Output is correct
5	Correct	1 ms	768 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	768 KB	Output is correct
8	Correct	1 ms	768 KB	Output is correct
9	Correct	1 ms	768 KB	Output is correct
10	Correct	1 ms	768 KB	Output is correct
11	Correct	1 ms	768 KB	Output is correct
12	Correct	1 ms	768 KB	Output is correct
13	Correct	1 ms	768 KB	Output is correct
14	Correct	1 ms	768 KB	Output is correct
15	Correct	1 ms	768 KB	Output is correct

Subtask #2

50.0 / 50.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	8448 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	156 ms	16508 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	16 ms	8456 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	9 ms	8448 KB	Output is correct
8	Correct	18 ms	8448 KB	Output is correct
9	Correct	79 ms	16384 KB	Output is correct
10	Correct	176 ms	16504 KB	Output is correct
11	Correct	19 ms	8448 KB	Output is correct
12	Correct	101 ms	16384 KB	Output is correct
13	Correct	7 ms	8448 KB	Output is correct
14	Correct	7 ms	8448 KB	Output is correct
15	Correct	8 ms	8448 KB	Output is correct