oj.uz

Submission #807708

# Submission time Handle Problem Language Result Execution time Memory
807708 2023-08-04T22:26:33 Z dong_liu Let's Win the Election (JOI22_ho_t3) C++17
100 / 100
 111 ms 1344 KB 
#include <bits/stdc++.h>
using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 0
#endif

const int N = 500;
const double INF = 1e18;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(NULL);
  int n, k;
  cin >> n >> k;
  static array<int, 2> p[N];
  for (int i = 0; i < n; i++) {
    int a, b;
    cin >> a >> b;
    if (b == -1) b = 1e9;
    p[i] = {b, a};
  }
  sort(p, p + n);
  static int g[N][N + 1];
  for (int i = 0; i < n; i++) {
    static int t[N];
    for (int j = i; j < n; j++) t[j - i] = p[j][1];
    sort(t, t + n - i);
    g[i][0] = 0;
    for (int j = 1; j <= n - i; j++) g[i][j] = g[i][j - 1] + t[j - 1];
  }
  double ans = g[0][k];
  for (int t = 0; t <= k; t++) {
    static double f[N + 1];
    for (int i = 0; i <= t; i++) f[i] = INF;
    f[0] = 0;
    for (int i = 0; i < n; i++) {
      for (int j = t; j >= 0; j--)
        f[j] = min(f[j] + (double)p[i][1] / (t + 1),
                   j == 0 ? INF : f[j - 1] + (double)p[i][0] / j);
      if (k - i - 1 >= 0)
        ans = min(ans, f[t] + (double)g[i + 1][k - i - 1] / (t + 1));
    }
  }
  cout << fixed << setprecision(12) << ans << '\n';
  return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 3 ms 1236 KB Output is correct
6 Correct 8 ms 1316 KB Output is correct
7 Correct 26 ms 1236 KB Output is correct
8 Correct 56 ms 1236 KB Output is correct
9 Correct 100 ms 1236 KB Output is correct
10 Correct 53 ms 1292 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 3 ms 1236 KB Output is correct
6 Correct 8 ms 1316 KB Output is correct
7 Correct 26 ms 1236 KB Output is correct
8 Correct 56 ms 1236 KB Output is correct
9 Correct 100 ms 1236 KB Output is correct
10 Correct 53 ms 1292 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 13 ms 1236 KB Output is correct
13 Correct 12 ms 1320 KB Output is correct
14 Correct 12 ms 1316 KB Output is correct
15 Correct 49 ms 1296 KB Output is correct
16 Correct 52 ms 1292 KB Output is correct
17 Correct 50 ms 1236 KB Output is correct
18 Correct 104 ms 1296 KB Output is correct
19 Correct 100 ms 1236 KB Output is correct
20 Correct 109 ms 1236 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 324 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 328 KB Output is correct
15 Correct 1 ms 340 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 324 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 328 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 328 KB Output is correct
18 Correct 0 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 1 ms 328 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 328 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 328 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 324 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 328 KB Output is correct
40 Correct 1 ms 340 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 324 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 328 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 328 KB Output is correct
18 Correct 0 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 1 ms 328 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 328 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 328 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 324 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 328 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 468 KB Output is correct
42 Correct 1 ms 468 KB Output is correct
43 Correct 1 ms 468 KB Output is correct
44 Correct 1 ms 524 KB Output is correct
45 Correct 1 ms 468 KB Output is correct
46 Correct 1 ms 468 KB Output is correct
47 Correct 1 ms 468 KB Output is correct
48 Correct 1 ms 468 KB Output is correct
49 Correct 1 ms 468 KB Output is correct
50 Correct 2 ms 468 KB Output is correct
51 Correct 2 ms 468 KB Output is correct
52 Correct 2 ms 468 KB Output is correct
53 Correct 1 ms 468 KB Output is correct
54 Correct 1 ms 468 KB Output is correct
55 Correct 1 ms 468 KB Output is correct
56 Correct 1 ms 468 KB Output is correct
57 Correct 1 ms 468 KB Output is correct
58 Correct 1 ms 468 KB Output is correct
59 Correct 1 ms 468 KB Output is correct
60 Correct 1 ms 468 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 103 ms 1292 KB Output is correct
2 Correct 111 ms 1296 KB Output is correct
3 Correct 105 ms 1292 KB Output is correct
4 Correct 101 ms 1236 KB Output is correct
5 Correct 102 ms 1300 KB Output is correct
6 Correct 106 ms 1296 KB Output is correct
7 Correct 101 ms 1304 KB Output is correct

Subtask #7
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 3 ms 1236 KB Output is correct
6 Correct 8 ms 1316 KB Output is correct
7 Correct 26 ms 1236 KB Output is correct
8 Correct 56 ms 1236 KB Output is correct
9 Correct 100 ms 1236 KB Output is correct
10 Correct 53 ms 1292 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 13 ms 1236 KB Output is correct
13 Correct 12 ms 1320 KB Output is correct
14 Correct 12 ms 1316 KB Output is correct
15 Correct 49 ms 1296 KB Output is correct
16 Correct 52 ms 1292 KB Output is correct
17 Correct 50 ms 1236 KB Output is correct
18 Correct 104 ms 1296 KB Output is correct
19 Correct 100 ms 1236 KB Output is correct
20 Correct 109 ms 1236 KB Output is correct
21 Correct 1 ms 328 KB Output is correct
22 Correct 1 ms 328 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 324 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 1 ms 328 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 328 KB Output is correct
38 Correct 0 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 328 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 328 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 340 KB Output is correct
47 Correct 1 ms 328 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 324 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 0 ms 340 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 1 ms 340 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 1 ms 328 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 1 ms 468 KB Output is correct
62 Correct 1 ms 468 KB Output is correct
63 Correct 1 ms 468 KB Output is correct
64 Correct 1 ms 524 KB Output is correct
65 Correct 1 ms 468 KB Output is correct
66 Correct 1 ms 468 KB Output is correct
67 Correct 1 ms 468 KB Output is correct
68 Correct 1 ms 468 KB Output is correct
69 Correct 1 ms 468 KB Output is correct
70 Correct 2 ms 468 KB Output is correct
71 Correct 2 ms 468 KB Output is correct
72 Correct 2 ms 468 KB Output is correct
73 Correct 1 ms 468 KB Output is correct
74 Correct 1 ms 468 KB Output is correct
75 Correct 1 ms 468 KB Output is correct
76 Correct 1 ms 468 KB Output is correct
77 Correct 1 ms 468 KB Output is correct
78 Correct 1 ms 468 KB Output is correct
79 Correct 1 ms 468 KB Output is correct
80 Correct 1 ms 468 KB Output is correct
81 Correct 103 ms 1292 KB Output is correct
82 Correct 111 ms 1296 KB Output is correct
83 Correct 105 ms 1292 KB Output is correct
84 Correct 101 ms 1236 KB Output is correct
85 Correct 102 ms 1300 KB Output is correct
86 Correct 106 ms 1296 KB Output is correct
87 Correct 101 ms 1304 KB Output is correct
88 Correct 6 ms 1236 KB Output is correct
89 Correct 6 ms 1280 KB Output is correct
90 Correct 11 ms 1256 KB Output is correct
91 Correct 11 ms 1300 KB Output is correct
92 Correct 29 ms 1236 KB Output is correct
93 Correct 32 ms 1300 KB Output is correct
94 Correct 60 ms 1236 KB Output is correct
95 Correct 60 ms 1296 KB Output is correct
96 Correct 84 ms 1344 KB Output is correct
97 Correct 83 ms 1292 KB Output is correct
98 Correct 52 ms 1236 KB Output is correct
99 Correct 52 ms 1236 KB Output is correct
100 Correct 53 ms 1296 KB Output is correct
101 Correct 52 ms 1300 KB Output is correct
102 Correct 52 ms 1236 KB Output is correct
103 Correct 54 ms 1296 KB Output is correct
104 Correct 51 ms 1300 KB Output is correct
105 Correct 49 ms 1292 KB Output is correct