oj.uz

Submission #938940

# Submission time Handle Problem Language Result Execution time Memory
938940 2024-03-06T00:29:45 Z Pacybwoah Let's Win the Election (JOI22_ho_t3) C++17
21 / 100
 706 ms 4464 KB 
#include<iostream>
#include<vector>
#include<iomanip>
#include<utility>
#include<algorithm>
#define ld long double
using namespace std;
vector<pair<ld,ld>> vec;
int n,k;
ld solve(int m){
    vector<vector<ld>> dp(n+1,vector<ld>(k-m+1,1e9+7));
    dp[1][0]=(m>0?vec[1].first:0);
    if(k-m>0) dp[1][1]=vec[1].second;
    for(int i=2;i<=n;i++){
        for(int j=0;j<=min(k-m,i);j++){
            dp[i][j]=min(dp[i][j],dp[i-1][j]+(i-j>m?0:vec[i].first/(long double)(i-j)));
            if(j>0) dp[i][j]=min(dp[i][j],dp[i-1][j-1]+vec[i].second/(long double)(m+1));
        }
    }
    /*for(int i=1;i<=n;i++){
        for(int j=0;j<=k-m;j++) if(m==2) cout<<dp[i][j]<<" ";
        cout<<"\n";
    }*/
    return dp[n][k-m];
}
int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin>>n>>k;
    vec.resize(n+1);
    for(int i=1;i<=n;i++) cin>>vec[i].second>>vec[i].first;
    for(int i=1;i<=n;i++) if(vec[i].first==-1) vec[i].first=1e9;
    sort(next(vec.begin()),vec.end());
    int l=0,r=k;
    ld ans=1e9+7;
    /*while(l<r){
        int mid=(l+r)>>1;
        ld a=solve(max(mid,0)),b=solve(min(mid+1,r));
        ans=min(ans,min(a,b));
        if(a>b) l=min(mid+1,r);
        else r=(max(mid,0));
    }*/
    for(int i=0;i<=k;i++) ans=min(ans,solve(i));
    cout<<fixed<<setprecision(12)<<ans;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:34:9: warning: unused variable 'l' [-Wunused-variable]
   34 |     int l=0,r=k;
      |         ^
Main.cpp:34:13: warning: unused variable 'r' [-Wunused-variable]
   34 |     int l=0,r=k;
      |             ^

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 9 ms 864 KB Output is correct
6 Correct 53 ms 1420 KB Output is correct
7 Correct 196 ms 2428 KB Output is correct
8 Correct 415 ms 3420 KB Output is correct
9 Correct 696 ms 4428 KB Output is correct
10 Correct 366 ms 3224 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 9 ms 864 KB Output is correct
6 Correct 53 ms 1420 KB Output is correct
7 Correct 196 ms 2428 KB Output is correct
8 Correct 415 ms 3420 KB Output is correct
9 Correct 696 ms 4428 KB Output is correct
10 Correct 366 ms 3224 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 75 ms 1640 KB Output is correct
13 Correct 76 ms 1624 KB Output is correct
14 Correct 75 ms 1624 KB Output is correct
15 Correct 372 ms 3256 KB Output is correct
16 Correct 367 ms 3220 KB Output is correct
17 Correct 369 ms 3200 KB Output is correct
18 Correct 694 ms 4428 KB Output is correct
19 Correct 692 ms 4428 KB Output is correct
20 Correct 702 ms 4372 KB Output is correct

Subtask #3
0 / 11.0

# 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 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Incorrect 0 ms 348 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# 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 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Incorrect 0 ms 348 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# 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 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Incorrect 0 ms 348 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 706 ms 4428 KB Output is correct
2 Correct 692 ms 4428 KB Output is correct
3 Correct 691 ms 4428 KB Output is correct
4 Correct 703 ms 4464 KB Output is correct
5 Correct 697 ms 4428 KB Output is correct
6 Correct 699 ms 4424 KB Output is correct
7 Correct 696 ms 4428 KB Output is correct

Subtask #7
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 9 ms 864 KB Output is correct
6 Correct 53 ms 1420 KB Output is correct
7 Correct 196 ms 2428 KB Output is correct
8 Correct 415 ms 3420 KB Output is correct
9 Correct 696 ms 4428 KB Output is correct
10 Correct 366 ms 3224 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 75 ms 1640 KB Output is correct
13 Correct 76 ms 1624 KB Output is correct
14 Correct 75 ms 1624 KB Output is correct
15 Correct 372 ms 3256 KB Output is correct
16 Correct 367 ms 3220 KB Output is correct
17 Correct 369 ms 3200 KB Output is correct
18 Correct 694 ms 4428 KB Output is correct
19 Correct 692 ms 4428 KB Output is correct
20 Correct 702 ms 4372 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 344 KB Output is correct
29 Incorrect 0 ms 348 KB Output isn't correct
30 Halted 0 ms 0 KB -