답안 #1036883

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1036883	2024-07-27T18:48:14 Z	juicy	Let's Win the Election (JOI22_ho_t3)	C++17	100 / 100	161 ms	2448 KB

Main

#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif

const int N = 505, inf = 1e9;

int n, k;
int a[N], b[N], ord[N];
double dp[N][N];

double solve(int m) {
  for (int i = 0; i <= n; ++i) {
    fill(dp[i], dp[i] + k + 1, inf);
  }
  dp[0][0] = 0;
  for (int i = 0; i < n; ++i) {
    for (int j = 0; j <= min(i, k - m); ++j) {
      if (dp[i][j] != inf) {
        int id = ord[i + 1];
        if (j + 1 <= k - m) {
          dp[i + 1][j + 1] = min(dp[i + 1][j + 1], dp[i][j] + (double) a[id] / (m + 1));
        }
        int pick = i - j;
        if (m - pick > 0) {
          if (b[id] != inf) {
            dp[i + 1][j] = min(dp[i + 1][j], dp[i][j] + (double) b[id] / (pick + 1));
          }
        } else {
          dp[i + 1][j] = min(dp[i + 1][j], dp[i][j]);
        }
      }
    }
  }
  return dp[n][k - m];
}

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


  cin >> n >> k;
  int can = n;
  for (int i = 1; i <= n; ++i) {
    cin >> a[i] >> b[i];
    if (b[i] == -1) {
      b[i] = inf;
      --can;
    } 
  }
  iota(ord + 1, ord + n + 1, 1);
  sort(ord + 1, ord + n + 1, [&](int i, int j) {
    return b[i] < b[j];
  });
  double res = solve(1);;
  for (int cnt = 0; cnt <= min(can, k); ++cnt) {
    res = min(res, solve(cnt));
  }  
  cout << fixed << setprecision(15) << res;
  return 0;
}

Subtask #1
5.0 / 5.0

#	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	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2268 KB	Output is correct
8	Correct	2 ms	2396 KB	Output is correct
9	Correct	2 ms	2396 KB	Output is correct
10	Correct	2 ms	2396 KB	Output is correct

Subtask #2
5.0 / 5.0

#	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	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2268 KB	Output is correct
8	Correct	2 ms	2396 KB	Output is correct
9	Correct	2 ms	2396 KB	Output is correct
10	Correct	2 ms	2396 KB	Output is correct
11	Correct	1 ms	344 KB	Output is correct
12	Correct	17 ms	2396 KB	Output is correct
13	Correct	17 ms	2396 KB	Output is correct
14	Correct	13 ms	2396 KB	Output is correct
15	Correct	71 ms	2396 KB	Output is correct
16	Correct	68 ms	2396 KB	Output is correct
17	Correct	25 ms	2396 KB	Output is correct
18	Correct	161 ms	2320 KB	Output is correct
19	Correct	94 ms	2424 KB	Output is correct
20	Correct	28 ms	2396 KB	Output is correct

Subtask #3
11.0 / 11.0

#	결과	메모리	Grader output
1	Correct	344 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	604 KB	Output is correct
4	Correct	348 KB	Output is correct
5	Correct	468 KB	Output is correct
6	Correct	348 KB	Output is correct
7	Correct	348 KB	Output is correct
8	Correct	348 KB	Output is correct
9	Correct	348 KB	Output is correct
10	Correct	348 KB	Output is correct
11	Correct	348 KB	Output is correct
12	Correct	348 KB	Output is correct
13	Correct	348 KB	Output is correct
14	Correct	348 KB	Output is correct
15	Correct	348 KB	Output is correct

Subtask #4
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	604 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	468 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	0 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	348 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	468 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	468 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	0 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	0 ms	348 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	464 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

Subtask #5
33.0 / 33.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	604 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	468 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	0 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	348 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	468 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	468 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	0 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	0 ms	348 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	464 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	860 KB	Output is correct
42	Correct	0 ms	860 KB	Output is correct
43	Correct	1 ms	860 KB	Output is correct
44	Correct	0 ms	860 KB	Output is correct
45	Correct	1 ms	860 KB	Output is correct
46	Correct	1 ms	860 KB	Output is correct
47	Correct	1 ms	860 KB	Output is correct
48	Correct	1 ms	860 KB	Output is correct
49	Correct	1 ms	860 KB	Output is correct
50	Correct	1 ms	860 KB	Output is correct
51	Correct	1 ms	860 KB	Output is correct
52	Correct	1 ms	860 KB	Output is correct
53	Correct	1 ms	860 KB	Output is correct
54	Correct	1 ms	860 KB	Output is correct
55	Correct	1 ms	860 KB	Output is correct
56	Correct	1 ms	860 KB	Output is correct
57	Correct	2 ms	860 KB	Output is correct
58	Correct	1 ms	860 KB	Output is correct
59	Correct	1 ms	860 KB	Output is correct
60	Correct	1 ms	860 KB	Output is correct

Subtask #6
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	134 ms	2432 KB	Output is correct
2	Correct	131 ms	2396 KB	Output is correct
3	Correct	129 ms	2396 KB	Output is correct
4	Correct	126 ms	2428 KB	Output is correct
5	Correct	134 ms	2396 KB	Output is correct
6	Correct	130 ms	2396 KB	Output is correct
7	Correct	132 ms	2396 KB	Output is correct

Subtask #7
23.0 / 23.0

#	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	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2268 KB	Output is correct
8	Correct	2 ms	2396 KB	Output is correct
9	Correct	2 ms	2396 KB	Output is correct
10	Correct	2 ms	2396 KB	Output is correct
11	Correct	1 ms	344 KB	Output is correct
12	Correct	17 ms	2396 KB	Output is correct
13	Correct	17 ms	2396 KB	Output is correct
14	Correct	13 ms	2396 KB	Output is correct
15	Correct	71 ms	2396 KB	Output is correct
16	Correct	68 ms	2396 KB	Output is correct
17	Correct	25 ms	2396 KB	Output is correct
18	Correct	161 ms	2320 KB	Output is correct
19	Correct	94 ms	2424 KB	Output is correct
20	Correct	28 ms	2396 KB	Output is correct
21	Correct	0 ms	344 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	0 ms	604 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	468 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	0 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	0 ms	348 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	468 KB	Output is correct
40	Correct	0 ms	348 KB	Output is correct
41	Correct	0 ms	348 KB	Output is correct
42	Correct	0 ms	468 KB	Output is correct
43	Correct	1 ms	348 KB	Output is correct
44	Correct	0 ms	348 KB	Output is correct
45	Correct	1 ms	348 KB	Output is correct
46	Correct	0 ms	348 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	0 ms	348 KB	Output is correct
51	Correct	0 ms	348 KB	Output is correct
52	Correct	0 ms	348 KB	Output is correct
53	Correct	0 ms	348 KB	Output is correct
54	Correct	0 ms	348 KB	Output is correct
55	Correct	0 ms	348 KB	Output is correct
56	Correct	0 ms	464 KB	Output is correct
57	Correct	0 ms	348 KB	Output is correct
58	Correct	0 ms	348 KB	Output is correct
59	Correct	0 ms	348 KB	Output is correct
60	Correct	0 ms	348 KB	Output is correct
61	Correct	1 ms	860 KB	Output is correct
62	Correct	0 ms	860 KB	Output is correct
63	Correct	1 ms	860 KB	Output is correct
64	Correct	0 ms	860 KB	Output is correct
65	Correct	1 ms	860 KB	Output is correct
66	Correct	1 ms	860 KB	Output is correct
67	Correct	1 ms	860 KB	Output is correct
68	Correct	1 ms	860 KB	Output is correct
69	Correct	1 ms	860 KB	Output is correct
70	Correct	1 ms	860 KB	Output is correct
71	Correct	1 ms	860 KB	Output is correct
72	Correct	1 ms	860 KB	Output is correct
73	Correct	1 ms	860 KB	Output is correct
74	Correct	1 ms	860 KB	Output is correct
75	Correct	1 ms	860 KB	Output is correct
76	Correct	1 ms	860 KB	Output is correct
77	Correct	2 ms	860 KB	Output is correct
78	Correct	1 ms	860 KB	Output is correct
79	Correct	1 ms	860 KB	Output is correct
80	Correct	1 ms	860 KB	Output is correct
81	Correct	134 ms	2432 KB	Output is correct
82	Correct	131 ms	2396 KB	Output is correct
83	Correct	129 ms	2396 KB	Output is correct
84	Correct	126 ms	2428 KB	Output is correct
85	Correct	134 ms	2396 KB	Output is correct
86	Correct	130 ms	2396 KB	Output is correct
87	Correct	132 ms	2396 KB	Output is correct
88	Correct	3 ms	2396 KB	Output is correct
89	Correct	3 ms	2396 KB	Output is correct
90	Correct	13 ms	2396 KB	Output is correct
91	Correct	11 ms	2448 KB	Output is correct
92	Correct	39 ms	2396 KB	Output is correct
93	Correct	38 ms	2396 KB	Output is correct
94	Correct	84 ms	2396 KB	Output is correct
95	Correct	79 ms	2396 KB	Output is correct
96	Correct	108 ms	2396 KB	Output is correct
97	Correct	117 ms	2396 KB	Output is correct
98	Correct	67 ms	2396 KB	Output is correct
99	Correct	71 ms	2396 KB	Output is correct
100	Correct	68 ms	2396 KB	Output is correct
101	Correct	77 ms	2396 KB	Output is correct
102	Correct	71 ms	2432 KB	Output is correct
103	Correct	79 ms	2428 KB	Output is correct
104	Correct	68 ms	2432 KB	Output is correct
105	Correct	72 ms	2396 KB	Output is correct

답안 #1036883

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