oj.uz

Submission #794833

# Submission time Handle Problem Language Result Execution time Memory
794833 2023-07-27T00:45:21 Z gun_gan Let's Win the Election (JOI22_ho_t3) C++17
61 / 100
 2500 ms 994168 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
 
const int MX = 505;
 
int N, K;
int a[MX], b[MX];
double dp[MX][MX][MX];
 
vector<pair<int, int>> v;

double f(int x) {
      for(int i = 0; i <= N; i++)
            for(int j = 0; j <= K; j++)
                  for(int k = 0; k <= x; k++)
                        dp[i][j][k] = 1e9;
       
      dp[0][0][0] = 0;
      for(int i = 0; i < N; i++) {
            for(int j = 0; j <= K; j++) { // votes
                  for(int k = 0; k <= x; k++) { // num of collaborator
                        if(dp[i][j][k] == 1e9) continue;
 
                        // skip
                        dp[i + 1][j][k] = min(dp[i + 1][j][k], dp[i][j][k]);

                        // ambil vote
                        dp[i + 1][j + 1][k] = min(dp[i + 1][j + 1][k], dp[i][j][k] + (double) v[i].second / (x + 1));
                        
                        // ambil collaborator
                        if(v[i].first != 1e9) 
                              dp[i + 1][j + 1][k + 1] = min(dp[i + 1][j + 1][k + 1], dp[i][j][k] + (double) v[i].first / (k + 1));
                  }
            }
      }

      return dp[N][K][x];
}
 
int main() {
      cin.tie(0); ios_base::sync_with_stdio(0);

      cin >> N >> K;
 
      int tot = 0;
      for(int i = 1; i <= N; i++) {
            cin >> a[i] >> b[i];
            if(b[i] != -1) tot++;
            else b[i] = 1e9;
            v.push_back({b[i], a[i]});
      }
 
      sort(v.begin(), v.end());

      double ans = 1e9;
      int l = 0, r = min(K, tot);

      while(r - l > 1) {
            int mid = (l + r) >> 1;
            if(f(mid) > f(mid + 1)) 
                  l = mid;
            else 
                  r = mid;
      } 

      cout << fixed << setprecision(15) << min(f(l), f(l + 1)) << '\n';
 
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:56:14: warning: unused variable 'ans' [-Wunused-variable]
   56 |       double ans = 1e9;
      |              ^~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 37 ms 104776 KB Output is correct
6 Correct 91 ms 252744 KB Output is correct
7 Correct 180 ms 499316 KB Output is correct
8 Correct 236 ms 745984 KB Output is correct
9 Correct 317 ms 992576 KB Output is correct
10 Correct 214 ms 696644 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 37 ms 104776 KB Output is correct
6 Correct 91 ms 252744 KB Output is correct
7 Correct 180 ms 499316 KB Output is correct
8 Correct 236 ms 745984 KB Output is correct
9 Correct 317 ms 992576 KB Output is correct
10 Correct 214 ms 696644 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 982 ms 302852 KB Output is correct
13 Correct 754 ms 302624 KB Output is correct
14 Correct 507 ms 302344 KB Output is correct
15 Execution timed out 2608 ms 698020 KB Time limit exceeded
16 Halted 0 ms 0 KB -

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 456 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 596 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 456 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 596 KB Output is correct
16 Correct 1 ms 724 KB Output is correct
17 Correct 1 ms 1236 KB Output is correct
18 Correct 1 ms 1236 KB Output is correct
19 Correct 1 ms 1484 KB Output is correct
20 Correct 1 ms 1492 KB Output is correct
21 Correct 1 ms 1492 KB Output is correct
22 Correct 1 ms 1620 KB Output is correct
23 Correct 1 ms 1620 KB Output is correct
24 Correct 1 ms 1620 KB Output is correct
25 Correct 1 ms 2132 KB Output is correct
26 Correct 2 ms 2132 KB Output is correct
27 Correct 1 ms 1492 KB Output is correct
28 Correct 1 ms 1620 KB Output is correct
29 Correct 1 ms 1492 KB Output is correct
30 Correct 1 ms 1620 KB Output is correct
31 Correct 1 ms 1492 KB Output is correct
32 Correct 1 ms 1620 KB Output is correct
33 Correct 1 ms 1492 KB Output is correct
34 Correct 1 ms 1492 KB Output is correct
35 Correct 1 ms 1620 KB Output is correct
36 Correct 1 ms 1492 KB Output is correct
37 Correct 1 ms 1620 KB Output is correct
38 Correct 1 ms 1528 KB Output is correct
39 Correct 1 ms 1620 KB Output is correct
40 Correct 1 ms 1492 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 456 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 596 KB Output is correct
16 Correct 1 ms 724 KB Output is correct
17 Correct 1 ms 1236 KB Output is correct
18 Correct 1 ms 1236 KB Output is correct
19 Correct 1 ms 1484 KB Output is correct
20 Correct 1 ms 1492 KB Output is correct
21 Correct 1 ms 1492 KB Output is correct
22 Correct 1 ms 1620 KB Output is correct
23 Correct 1 ms 1620 KB Output is correct
24 Correct 1 ms 1620 KB Output is correct
25 Correct 1 ms 2132 KB Output is correct
26 Correct 2 ms 2132 KB Output is correct
27 Correct 1 ms 1492 KB Output is correct
28 Correct 1 ms 1620 KB Output is correct
29 Correct 1 ms 1492 KB Output is correct
30 Correct 1 ms 1620 KB Output is correct
31 Correct 1 ms 1492 KB Output is correct
32 Correct 1 ms 1620 KB Output is correct
33 Correct 1 ms 1492 KB Output is correct
34 Correct 1 ms 1492 KB Output is correct
35 Correct 1 ms 1620 KB Output is correct
36 Correct 1 ms 1492 KB Output is correct
37 Correct 1 ms 1620 KB Output is correct
38 Correct 1 ms 1528 KB Output is correct
39 Correct 1 ms 1620 KB Output is correct
40 Correct 1 ms 1492 KB Output is correct
41 Correct 3 ms 7380 KB Output is correct
42 Correct 4 ms 7380 KB Output is correct
43 Correct 7 ms 13268 KB Output is correct
44 Correct 10 ms 13268 KB Output is correct
45 Correct 16 ms 21284 KB Output is correct
46 Correct 14 ms 21204 KB Output is correct
47 Correct 18 ms 27192 KB Output is correct
48 Correct 22 ms 27204 KB Output is correct
49 Correct 38 ms 33128 KB Output is correct
50 Correct 25 ms 33108 KB Output is correct
51 Correct 39 ms 41020 KB Output is correct
52 Correct 55 ms 41028 KB Output is correct
53 Correct 16 ms 27084 KB Output is correct
54 Correct 19 ms 27184 KB Output is correct
55 Correct 29 ms 27204 KB Output is correct
56 Correct 17 ms 27092 KB Output is correct
57 Correct 27 ms 27284 KB Output is correct
58 Correct 25 ms 27092 KB Output is correct
59 Correct 24 ms 27092 KB Output is correct
60 Correct 23 ms 27128 KB Output is correct

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2597 ms 994168 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 37 ms 104776 KB Output is correct
6 Correct 91 ms 252744 KB Output is correct
7 Correct 180 ms 499316 KB Output is correct
8 Correct 236 ms 745984 KB Output is correct
9 Correct 317 ms 992576 KB Output is correct
10 Correct 214 ms 696644 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 982 ms 302852 KB Output is correct
13 Correct 754 ms 302624 KB Output is correct
14 Correct 507 ms 302344 KB Output is correct
15 Execution timed out 2608 ms 698020 KB Time limit exceeded
16 Halted 0 ms 0 KB -