답안 #928237

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
928237	2024-02-16T05:42:36 Z	pcc	Let's Win the Election (JOI22_ho_t3)	C++14	10 / 100	8 ms	456 KB

Main

#include <bits/stdc++.h>
using namespace std;


#define ll long long
#define pll pair<ll,ll>
#define fs first
#define sc second
#define ld double

const ll inf = 1e12;
const ll mxn = 550;
pll arr[mxn];
ll N,K;
bitset<mxn> done;

inline ld f(ll cnt){
	done.reset();
	vector<pll> v;
	for(int i= 0;i<N;i++)v.push_back({arr[i].sc,i});
	sort(v.begin(),v.end());
	ld re = 0,c = 1;
	for(int i = 0;i<cnt;i++){
		re += v[i].fs/c;
		c+=1;
		done[v[i].sc] = true;
	}
	ll now = cnt;
	for(int i = 0;i<N;i++){
		if(now>=K)break;
		if(done[i])continue;
		re += arr[i].fs/c;
		now++;
	}
	return re;
}

int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>N>>K;
	for(int i = 0;i<N;i++)cin>>arr[i].fs>>arr[i].sc,arr[i].sc = (arr[i].sc == -1?inf:arr[i].sc);
	sort(arr,arr+N);
	ld ans = inf;
	for(int i = 0;i<=K;i++)ans = min(ans,f(i));
	cout<<fixed<<setprecision(20)<<ans;
}

Subtask #1

5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 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	1 ms	348 KB	Output is correct
6	Correct	2 ms	348 KB	Output is correct
7	Correct	3 ms	348 KB	Output is correct
8	Correct	4 ms	348 KB	Output is correct
9	Correct	6 ms	456 KB	Output is correct
10	Correct	4 ms	348 KB	Output is correct

Subtask #2

5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 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	1 ms	348 KB	Output is correct
6	Correct	2 ms	348 KB	Output is correct
7	Correct	3 ms	348 KB	Output is correct
8	Correct	4 ms	348 KB	Output is correct
9	Correct	6 ms	456 KB	Output is correct
10	Correct	4 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	2 ms	348 KB	Output is correct
13	Correct	3 ms	348 KB	Output is correct
14	Correct	2 ms	348 KB	Output is correct
15	Correct	4 ms	348 KB	Output is correct
16	Correct	5 ms	348 KB	Output is correct
17	Correct	6 ms	348 KB	Output is correct
18	Correct	5 ms	348 KB	Output is correct
19	Correct	8 ms	348 KB	Output is correct
20	Correct	7 ms	348 KB	Output is correct

Subtask #3

0 / 11.0

#	결과	실행 시간	메모리	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	344 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 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

#	결과	실행 시간	메모리	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	344 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 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

#	결과	실행 시간	메모리	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	344 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Incorrect	0 ms	348 KB	Output isn't correct
10	Halted	0 ms	0 KB	-

Subtask #6

0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	7 ms	344 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #7

0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 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	1 ms	348 KB	Output is correct
6	Correct	2 ms	348 KB	Output is correct
7	Correct	3 ms	348 KB	Output is correct
8	Correct	4 ms	348 KB	Output is correct
9	Correct	6 ms	456 KB	Output is correct
10	Correct	4 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	2 ms	348 KB	Output is correct
13	Correct	3 ms	348 KB	Output is correct
14	Correct	2 ms	348 KB	Output is correct
15	Correct	4 ms	348 KB	Output is correct
16	Correct	5 ms	348 KB	Output is correct
17	Correct	6 ms	348 KB	Output is correct
18	Correct	5 ms	348 KB	Output is correct
19	Correct	8 ms	348 KB	Output is correct
20	Correct	7 ms	348 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	344 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	0 ms	348 KB	Output is correct
29	Incorrect	0 ms	348 KB	Output isn't correct
30	Halted	0 ms	0 KB	-