oj.uz

Submission #1036883

# Submission time Handle Problem Language Result Execution time Memory
1036883 2024-07-27T18:48:14 Z juicy Let's Win the Election (JOI22_ho_t3) C++17
100 / 100
 161 ms 2448 KB 
#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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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