oj.uz

Submission #785049

# Submission time Handle Problem Language Result Execution time Memory
785049 2023-07-17T02:18:06 Z gun_gan Let's Win the Election (JOI22_ho_t3) C++17
0 / 100
 517 ms 1008536 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;
 
int main() {
      cin.tie(0); ios_base::sync_with_stdio(0);
 
      for(int i = 0; i < MX; i++)
            for(int j = 0; j < MX; j++)
                  for(int k = 0; k < MX; k++)
                        dp[i][j][k] = 1e9;
 
      cin >> N >> K;
 
      for(int i = 1; i <= N; i++) {
            cin >> a[i] >> b[i];
            v.push_back({b[i], a[i]});
      }
 
      sort(v.begin(), v.end(), [&](auto x, auto y) {
            return x.first - x.second < y.first - y.second;
      });
 
      dp[0][0][0] = 0;
      for(int i = 0; i <= N; i++) {
            for(int j = 0; j <= N; j++) { // votes
                  for(int k = 0; k <= N; 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 / (k + 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));
                  }
            }
      }
 
      double ans = 1e9;
      for(int k = 0; k <= N; k++) {
            ans = min(ans, dp[N][K][k]);
      }
 
      cout << fixed << setprecision(15) << ans << '\n';
 
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 367 ms 1008328 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 367 ms 1008328 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 355 ms 1008536 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 355 ms 1008536 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Incorrect 355 ms 1008536 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 517 ms 1008436 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 367 ms 1008328 KB Output isn't correct
2 Halted 0 ms 0 KB -