답안 #544813

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
544813	2022-04-02T18:42:16 Z	blue	Let's Win the Election (JOI22_ho_t3)	C++17	100 / 100	171 ms	2300 KB

Main

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

using ll = long long;
using dd = double;
using vi = vector<int>;

const int mx = 500;
const dd INF = 1'000'000'0.0;

dd a[1+mx], b[1+mx];

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);

	int N, K;
	cin >> N >> K;

	cout << std::fixed;
	cout.precision(10);

	b[0] = 0;
	for(int i = 1; i <= N; i++) cin >> a[i] >> b[i];

	vi I(1+N);
	for(int i = 0; i <= N; i++) I[i] = i;
	sort(I.begin(), I.end(), [] (int u, int v)
	{
		dd bu = b[u], bv = b[v];
		if(bu == -1) bu = INF;
		if(bv == -1) bv = INF;
		return bu < bv;
	});

// cerr << '\n';

	dd A[1+N], B[1+N];
	for(int i = 1; i <= N; i++) A[i] = a[I[i]], B[i] = b[I[i]];


	double res = INF;

	int cc = 0;
	for(int i = 1; i <= N; i++) cc += (B[i] != -1);

	// cerr <<"cc = " << cc << "\n";



	// 	cerr << "\n\n\n";
	// for(int i = 1; i <= N; i++) cerr << A[i] << ' ' << B[i] << '\n';








	for(int x = 0; x <= min(K,cc); x++)
	{
		// cerr <<"\n\n\n\n x = " << x << '\n';
		dd DP[1+N][1+K-x]; //last position, non-collaborators
		for(int i = 0; i <= N; i++)
			for(int j = 0; j <= K-x; j++)
				DP[i][j] = INF;

		DP[0][0] = 0.0;

		for(int i = 1; i <= N; i++)
		{
			for(int j = 0; j <= min(i, K-x); j++)
			{
				// cerr << "\n\n state = " << i << ' ' << j << "/ " << i << ' ' << K-x << "\n";
				if(i-j > x)
					DP[i][j] = DP[i-1][j];

				if(i - j <= x && B[i] != -1 && i-j > 0)
				{
					// cerr << "#\n";
					// cerr << i-1 << ' ' << j << ' ' << i-j-1+1 << '\n';
					// cerr << "A\n";
					DP[i][j] = min(DP[i][j], DP[i-1][j] + (B[i] / double(i-j-1 + 1)));
				}

				if(j >= 1)
				{
					DP[i][j] = min(DP[i][j], DP[i-1][j-1] + (A[i] / double(x+1)));
				}

				// cerr << x << ' ' << i << ' ' << j << " : " << DP[i][j] << '\n';
			}
		}

		res = min(res, DP[N][K - x]);

		// cerr << "\n\n\n " << N << ' ' << K-x << ' ' << 1+N << ' ' << 1+x << "\n\n\n";
		
		// cerr << "res = " << res << "\n";
	}

	cout << res << '\n';
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 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	468 KB	Output is correct
6	Correct	1 ms	724 KB	Output is correct
7	Correct	1 ms	1220 KB	Output is correct
8	Correct	2 ms	1748 KB	Output is correct
9	Correct	2 ms	2260 KB	Output is correct
10	Correct	2 ms	1620 KB	Output is correct

Subtask #2
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 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	468 KB	Output is correct
6	Correct	1 ms	724 KB	Output is correct
7	Correct	1 ms	1220 KB	Output is correct
8	Correct	2 ms	1748 KB	Output is correct
9	Correct	2 ms	2260 KB	Output is correct
10	Correct	2 ms	1620 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	14 ms	932 KB	Output is correct
13	Correct	15 ms	932 KB	Output is correct
14	Correct	12 ms	936 KB	Output is correct
15	Correct	76 ms	1696 KB	Output is correct
16	Correct	68 ms	1692 KB	Output is correct
17	Correct	34 ms	1700 KB	Output is correct
18	Correct	156 ms	2260 KB	Output is correct
19	Correct	116 ms	2244 KB	Output is correct
20	Correct	35 ms	2288 KB	Output is correct

Subtask #3
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	320 KB	Output is correct
2	Correct	1 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	228 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	320 KB	Output is correct
10	Correct	1 ms	256 KB	Output is correct
11	Correct	1 ms	324 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct

Subtask #4
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	320 KB	Output is correct
2	Correct	1 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	228 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	320 KB	Output is correct
10	Correct	1 ms	256 KB	Output is correct
11	Correct	1 ms	324 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	324 KB	Output is correct
17	Correct	1 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	1 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	1 ms	256 KB	Output is correct
25	Correct	1 ms	212 KB	Output is correct
26	Correct	1 ms	324 KB	Output is correct
27	Correct	1 ms	324 KB	Output is correct
28	Correct	1 ms	212 KB	Output is correct
29	Correct	1 ms	212 KB	Output is correct
30	Correct	1 ms	320 KB	Output is correct
31	Correct	1 ms	328 KB	Output is correct
32	Correct	1 ms	436 KB	Output is correct
33	Correct	1 ms	212 KB	Output is correct
34	Correct	1 ms	212 KB	Output is correct
35	Correct	1 ms	212 KB	Output is correct
36	Correct	1 ms	212 KB	Output is correct
37	Correct	1 ms	212 KB	Output is correct
38	Correct	1 ms	212 KB	Output is correct
39	Correct	1 ms	324 KB	Output is correct
40	Correct	1 ms	212 KB	Output is correct

Subtask #5
33.0 / 33.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	320 KB	Output is correct
2	Correct	1 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	228 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	320 KB	Output is correct
10	Correct	1 ms	256 KB	Output is correct
11	Correct	1 ms	324 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	324 KB	Output is correct
17	Correct	1 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	1 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	1 ms	256 KB	Output is correct
25	Correct	1 ms	212 KB	Output is correct
26	Correct	1 ms	324 KB	Output is correct
27	Correct	1 ms	324 KB	Output is correct
28	Correct	1 ms	212 KB	Output is correct
29	Correct	1 ms	212 KB	Output is correct
30	Correct	1 ms	320 KB	Output is correct
31	Correct	1 ms	328 KB	Output is correct
32	Correct	1 ms	436 KB	Output is correct
33	Correct	1 ms	212 KB	Output is correct
34	Correct	1 ms	212 KB	Output is correct
35	Correct	1 ms	212 KB	Output is correct
36	Correct	1 ms	212 KB	Output is correct
37	Correct	1 ms	212 KB	Output is correct
38	Correct	1 ms	212 KB	Output is correct
39	Correct	1 ms	324 KB	Output is correct
40	Correct	1 ms	212 KB	Output is correct
41	Correct	1 ms	324 KB	Output is correct
42	Correct	1 ms	324 KB	Output is correct
43	Correct	1 ms	340 KB	Output is correct
44	Correct	1 ms	340 KB	Output is correct
45	Correct	1 ms	340 KB	Output is correct
46	Correct	1 ms	328 KB	Output is correct
47	Correct	2 ms	340 KB	Output is correct
48	Correct	1 ms	340 KB	Output is correct
49	Correct	2 ms	340 KB	Output is correct
50	Correct	2 ms	340 KB	Output is correct
51	Correct	3 ms	324 KB	Output is correct
52	Correct	2 ms	324 KB	Output is correct
53	Correct	2 ms	324 KB	Output is correct
54	Correct	1 ms	340 KB	Output is correct
55	Correct	1 ms	340 KB	Output is correct
56	Correct	1 ms	340 KB	Output is correct
57	Correct	2 ms	344 KB	Output is correct
58	Correct	2 ms	340 KB	Output is correct
59	Correct	1 ms	340 KB	Output is correct
60	Correct	2 ms	328 KB	Output is correct

Subtask #6
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	161 ms	2300 KB	Output is correct
2	Correct	149 ms	2284 KB	Output is correct
3	Correct	141 ms	2284 KB	Output is correct
4	Correct	156 ms	2276 KB	Output is correct
5	Correct	148 ms	2284 KB	Output is correct
6	Correct	155 ms	2260 KB	Output is correct
7	Correct	171 ms	2280 KB	Output is correct

Subtask #7
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 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	468 KB	Output is correct
6	Correct	1 ms	724 KB	Output is correct
7	Correct	1 ms	1220 KB	Output is correct
8	Correct	2 ms	1748 KB	Output is correct
9	Correct	2 ms	2260 KB	Output is correct
10	Correct	2 ms	1620 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	14 ms	932 KB	Output is correct
13	Correct	15 ms	932 KB	Output is correct
14	Correct	12 ms	936 KB	Output is correct
15	Correct	76 ms	1696 KB	Output is correct
16	Correct	68 ms	1692 KB	Output is correct
17	Correct	34 ms	1700 KB	Output is correct
18	Correct	156 ms	2260 KB	Output is correct
19	Correct	116 ms	2244 KB	Output is correct
20	Correct	35 ms	2288 KB	Output is correct
21	Correct	1 ms	320 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	1 ms	212 KB	Output is correct
26	Correct	1 ms	212 KB	Output is correct
27	Correct	1 ms	228 KB	Output is correct
28	Correct	1 ms	212 KB	Output is correct
29	Correct	1 ms	320 KB	Output is correct
30	Correct	1 ms	256 KB	Output is correct
31	Correct	1 ms	324 KB	Output is correct
32	Correct	1 ms	212 KB	Output is correct
33	Correct	1 ms	212 KB	Output is correct
34	Correct	1 ms	212 KB	Output is correct
35	Correct	1 ms	212 KB	Output is correct
36	Correct	1 ms	324 KB	Output is correct
37	Correct	1 ms	212 KB	Output is correct
38	Correct	1 ms	212 KB	Output is correct
39	Correct	1 ms	212 KB	Output is correct
40	Correct	1 ms	212 KB	Output is correct
41	Correct	1 ms	212 KB	Output is correct
42	Correct	1 ms	212 KB	Output is correct
43	Correct	1 ms	340 KB	Output is correct
44	Correct	1 ms	256 KB	Output is correct
45	Correct	1 ms	212 KB	Output is correct
46	Correct	1 ms	324 KB	Output is correct
47	Correct	1 ms	324 KB	Output is correct
48	Correct	1 ms	212 KB	Output is correct
49	Correct	1 ms	212 KB	Output is correct
50	Correct	1 ms	320 KB	Output is correct
51	Correct	1 ms	328 KB	Output is correct
52	Correct	1 ms	436 KB	Output is correct
53	Correct	1 ms	212 KB	Output is correct
54	Correct	1 ms	212 KB	Output is correct
55	Correct	1 ms	212 KB	Output is correct
56	Correct	1 ms	212 KB	Output is correct
57	Correct	1 ms	212 KB	Output is correct
58	Correct	1 ms	212 KB	Output is correct
59	Correct	1 ms	324 KB	Output is correct
60	Correct	1 ms	212 KB	Output is correct
61	Correct	1 ms	324 KB	Output is correct
62	Correct	1 ms	324 KB	Output is correct
63	Correct	1 ms	340 KB	Output is correct
64	Correct	1 ms	340 KB	Output is correct
65	Correct	1 ms	340 KB	Output is correct
66	Correct	1 ms	328 KB	Output is correct
67	Correct	2 ms	340 KB	Output is correct
68	Correct	1 ms	340 KB	Output is correct
69	Correct	2 ms	340 KB	Output is correct
70	Correct	2 ms	340 KB	Output is correct
71	Correct	3 ms	324 KB	Output is correct
72	Correct	2 ms	324 KB	Output is correct
73	Correct	2 ms	324 KB	Output is correct
74	Correct	1 ms	340 KB	Output is correct
75	Correct	1 ms	340 KB	Output is correct
76	Correct	1 ms	340 KB	Output is correct
77	Correct	2 ms	344 KB	Output is correct
78	Correct	2 ms	340 KB	Output is correct
79	Correct	1 ms	340 KB	Output is correct
80	Correct	2 ms	328 KB	Output is correct
81	Correct	161 ms	2300 KB	Output is correct
82	Correct	149 ms	2284 KB	Output is correct
83	Correct	141 ms	2284 KB	Output is correct
84	Correct	156 ms	2276 KB	Output is correct
85	Correct	148 ms	2284 KB	Output is correct
86	Correct	155 ms	2260 KB	Output is correct
87	Correct	171 ms	2280 KB	Output is correct
88	Correct	4 ms	468 KB	Output is correct
89	Correct	3 ms	484 KB	Output is correct
90	Correct	14 ms	724 KB	Output is correct
91	Correct	11 ms	840 KB	Output is correct
92	Correct	38 ms	1236 KB	Output is correct
93	Correct	45 ms	1236 KB	Output is correct
94	Correct	96 ms	1796 KB	Output is correct
95	Correct	90 ms	1748 KB	Output is correct
96	Correct	124 ms	2092 KB	Output is correct
97	Correct	121 ms	2088 KB	Output is correct
98	Correct	72 ms	1700 KB	Output is correct
99	Correct	84 ms	1620 KB	Output is correct
100	Correct	71 ms	1692 KB	Output is correct
101	Correct	70 ms	1700 KB	Output is correct
102	Correct	84 ms	1600 KB	Output is correct
103	Correct	74 ms	1700 KB	Output is correct
104	Correct	65 ms	1604 KB	Output is correct
105	Correct	72 ms	1696 KB	Output is correct

답안 #544813

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 5.0 / 5.0

Subtask #3 11.0 / 11.0

Subtask #4 12.0 / 12.0

Subtask #5 33.0 / 33.0

Subtask #6 11.0 / 11.0

Subtask #7 23.0 / 23.0

Subtask #1
5.0 / 5.0

Subtask #2
5.0 / 5.0

Subtask #3
11.0 / 11.0

Subtask #4
12.0 / 12.0

Subtask #5
33.0 / 33.0

Subtask #6
11.0 / 11.0

Subtask #7
23.0 / 23.0