Submission #658647

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
658647	2022-11-14T03:36:07 Z	Darren0724	Let's Win the Election (JOI22_ho_t3)	C++17	10 / 100	11 ms	340 KB

Main

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define all(x) x.begin(),x.end()
#define double long double
int INF=1e9;

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;cin>>n;
    int k;cin>>k;
    vector<int> a(n),b(n);
    for(int i=0;i<n;i++){
        cin>>a[i];
        cin>>b[i];
        if(b[i]==-1){
            b[i]=INF;
        }
    }
    double ans=INF;
    for(int i=0;i<=k;i++){
        double cnt=0;
        vector<bool> vis(n);
        vector<int> c(n);
        iota(all(c),0);
        sort(all(c),[&](int i,int j){return b[i]<b[j];});
        for(int j=0;j<i;j++){
            int p=c[j];
            vis[p]=1;
            cnt+=b[p]/(double)(j+1);
        }
        sort(all(c),[&](int i,int j){return a[i]<a[j];});
        int ptr=0;
        for(int j=0;j<k-i;j++){
            while(vis[c[ptr]]){
                ptr++;
            }
            int p=c[ptr];
            vis[p]=1;
            cnt+=a[p]/(double)(i+1);
            ptr++;
        }
        ans=min(ans,cnt);
    }
    cout<<fixed<<setprecision(9)<<ans<<endl;


    return 0;
}

Subtask #1

5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	320 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	3 ms	340 KB	Output is correct
7	Correct	5 ms	312 KB	Output is correct
8	Correct	5 ms	212 KB	Output is correct
9	Correct	8 ms	212 KB	Output is correct
10	Correct	3 ms	340 KB	Output is correct

Subtask #2

5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	320 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	3 ms	340 KB	Output is correct
7	Correct	5 ms	312 KB	Output is correct
8	Correct	5 ms	212 KB	Output is correct
9	Correct	8 ms	212 KB	Output is correct
10	Correct	3 ms	340 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	3 ms	212 KB	Output is correct
13	Correct	3 ms	268 KB	Output is correct
14	Correct	3 ms	212 KB	Output is correct
15	Correct	7 ms	320 KB	Output is correct
16	Correct	9 ms	340 KB	Output is correct
17	Correct	7 ms	340 KB	Output is correct
18	Correct	10 ms	212 KB	Output is correct
19	Correct	11 ms	332 KB	Output is correct
20	Correct	9 ms	332 KB	Output is correct

Subtask #3

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	1 ms	212 KB	Output is correct
4	Correct	1 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	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Incorrect	1 ms	212 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	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 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	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Incorrect	1 ms	212 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	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 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	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Incorrect	1 ms	212 KB	Output isn't correct
10	Halted	0 ms	0 KB	-

Subtask #6

0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	11 ms	212 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #7

0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	320 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	3 ms	340 KB	Output is correct
7	Correct	5 ms	312 KB	Output is correct
8	Correct	5 ms	212 KB	Output is correct
9	Correct	8 ms	212 KB	Output is correct
10	Correct	3 ms	340 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	3 ms	212 KB	Output is correct
13	Correct	3 ms	268 KB	Output is correct
14	Correct	3 ms	212 KB	Output is correct
15	Correct	7 ms	320 KB	Output is correct
16	Correct	9 ms	340 KB	Output is correct
17	Correct	7 ms	340 KB	Output is correct
18	Correct	10 ms	212 KB	Output is correct
19	Correct	11 ms	332 KB	Output is correct
20	Correct	9 ms	332 KB	Output is correct
21	Correct	0 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	Correct	1 ms	212 KB	Output is correct
26	Correct	0 ms	212 KB	Output is correct
27	Correct	1 ms	212 KB	Output is correct
28	Correct	0 ms	212 KB	Output is correct
29	Incorrect	1 ms	212 KB	Output isn't correct
30	Halted	0 ms	0 KB	-