oj.uz

Submission #715762

# Submission time Handle Problem Language Result Execution time Memory
715762 2023-03-27T19:32:40 Z epicci23 Let's Win the Election (JOI22_ho_t3) C++17
16 / 100
 1016 ms 8368 KB 
#include "bits/stdc++.h"
#pragma optimize ("Bismillahirrahmanirrahim")
using namespace std;
#define pb push_back
#define ff first
#define ss second
#define endl "\n" 
#define int long long
#define double long double
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define what_is(x) cerr << #x << " is " << x << endl;
//#define m (l+r)/2
constexpr int N=200005;
constexpr int MOD=1000000007;
constexpr int  INF2 = LLONG_MAX;
constexpr int INF=(int)1e18;
constexpr int LOG=30;
typedef pair<int,int> pii;
typedef tuple<int,int,int> tp;
typedef priority_queue<pii,vector<pii>,greater<pii>> min_pq;
typedef priority_queue<pii> max_pq;
typedef long long ll;
//to think//
/*
 * graph approach
 * dp
 * dividing the problem to smaller statements
 * finding the real constraint
 * sqrt decomposition
 * greedy approach
 * pigeonhole principle
 * rewriting the problem/equality 
 * bitwise approaches
 * binary search if monotonic
 * divide and conquer
 * combinatorics
 * inclusion - exclusion
 * think like bfs
*/



inline int in()
{
  int x;cin >> x;
  return x;
}

inline string in2()
{
  string x;cin >> x;
  return x;
}


void solve()
{
  int n=in(),k=in();
  vector<array<double,2>> v(n);
  for(int i=0;i<n;i++)
  {
    v[i][1]=in(),v[i][0]=in();
    if(v[i][0]==-1) v[i][0]=INF*1.0;
  }
  sort(all(v));

  double suf[n+2][n+1];
  
  double ans=INF*1.0;
  multiset<double> cur;

  for(int i=n-1;i>=0;i--)
  {
    double pre=0;
    cur.insert(v[i][1]);
    int p=0;
    suf[i][0]=pre;
    for(int j:cur)
    {
      pre+=j;
      suf[i][++p]=pre;
    }
    for(int j=p+1;j<=n;j++) suf[i][j]=INF*1.0;
  }

  for(int i=0;i<=n;i++) suf[n+1][i]=0.0;
  
  ans=min(ans,(double)suf[0][k]); 
  for(int goal=1;goal<=k;goal++)
  {
    double dp[n+2][goal+2];

    for(int j=0;j<=n;j++)
      for(int i=0;i<=goal;i++)
       dp[j][i]=INF*1.0;

    dp[0][0]=0.0;
    double bol=goal;
    for(int i=1;i<=n;i++)
    {
      for(int j=0;j<=goal;j++)
      {
        dp[i][j]=min(dp[i-1][j]+v[i-1][1]/(bol+1.0),dp[i][j]);
        if(j>0) dp[i][j]=min(dp[i][j],dp[i-1][j-1]+v[i-1][0]/(j*1.0));
      }
    }

    for(int i=1;i<=k;i++)
    {
      ans=min(ans,dp[i][goal]+suf[i+1][k-i]/(bol+1.0));
      //cout << "i: " << i << " goal: " << goal << " " << dp[i][goal]+suf[i+1][k-goal]/(bol+1.0) << endl;
    }
    //cout << "goal: " << dp[n][goal] << endl;
  }

  cout << ans << endl;
}

int32_t main(){
   

     cin.tie(0); ios::sync_with_stdio(0);
     cout << fixed <<  setprecision(15);
   
   int t=1;//cin>> t;
 
 for(int i=1;i<=t;i++)
 {
  //  cout << "Case #" << i << ": ";
    solve();
 }
 
 return 0;
}

Compilation message

Main.cpp:2: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    2 | #pragma optimize ("Bismillahirrahmanirrahim")
      |

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 14 ms 4644 KB Output is correct
6 Correct 65 ms 5168 KB Output is correct
7 Correct 259 ms 6204 KB Output is correct
8 Correct 547 ms 7364 KB Output is correct
9 Correct 974 ms 8368 KB Output is correct
10 Correct 493 ms 6992 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 14 ms 4644 KB Output is correct
6 Correct 65 ms 5168 KB Output is correct
7 Correct 259 ms 6204 KB Output is correct
8 Correct 547 ms 7364 KB Output is correct
9 Correct 974 ms 8368 KB Output is correct
10 Correct 493 ms 6992 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 96 ms 5480 KB Output is correct
13 Correct 95 ms 5440 KB Output is correct
14 Correct 94 ms 5472 KB Output is correct
15 Correct 486 ms 7276 KB Output is correct
16 Correct 490 ms 7024 KB Output is correct
17 Correct 492 ms 7140 KB Output is correct
18 Incorrect 967 ms 8260 KB Output isn't correct
19 Halted 0 ms 0 KB -

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Incorrect 0 ms 212 KB Output isn't correct
26 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Incorrect 0 ms 212 KB Output isn't correct
26 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 1016 ms 8272 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 14 ms 4644 KB Output is correct
6 Correct 65 ms 5168 KB Output is correct
7 Correct 259 ms 6204 KB Output is correct
8 Correct 547 ms 7364 KB Output is correct
9 Correct 974 ms 8368 KB Output is correct
10 Correct 493 ms 6992 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 96 ms 5480 KB Output is correct
13 Correct 95 ms 5440 KB Output is correct
14 Correct 94 ms 5472 KB Output is correct
15 Correct 486 ms 7276 KB Output is correct
16 Correct 490 ms 7024 KB Output is correct
17 Correct 492 ms 7140 KB Output is correct
18 Incorrect 967 ms 8260 KB Output isn't correct
19 Halted 0 ms 0 KB -