oj.uz

Submission #923394

# Submission time Handle Problem Language Result Execution time Memory
923394 2024-02-07T07:17:20 Z goodspeed0208 Let's Win the Election (JOI22_ho_t3) C++14
10 / 100
 452 ms 1018964 KB 
#include<bits/stdc++.h>
#define pii pair<int, int>
#define INF 5000000
using namespace std;

bool cmp(pii a, pii b) {
	if (a.second == -1 && b.second == -1) return a.first < b.first;
	if (a.second == -1) return (1 > 2);
	if (b.second == -1) return (1 < 2);
	if (a.second == b.second) return a.first > b.first;
	return a.second < b.second;
}

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n, K;
	cin >> n >> K;
	vector<pii>v(n+1);
	vector<double>a(n+1), b(n+1);
	for (int i = 1 ; i <=  n ;i++) cin >> v[i].first >> v[i].second;
	sort(v.begin()+1, v.end(), cmp);
	for (int i = 1 ; i <= n ;i++) a[i] = (double)v[i].first, b[i] = (double)v[i].second;
	
	vector<vector<vector<double> > >dp(505, vector<vector<double> >(505, vector<double>(505, INF)) );
	//double dp[505][505][505];
	dp[0][0][1] = 0.0;
	double ans = INF;
	for (int i = 1 ; i <= n ; i++) {//first i people
	//cout << i << ": \n";
		for (int j = 0 ; j <= i ; j++) {// have how many people
			//cout << j << ": ";
			for (int k = 1 ; k <= j+1 ; k++) {// get how many people
				dp[i][j][k] = dp[i-1][j][k];
				if (j > 0) dp[i][j][k] = min(dp[i][j][k], dp[i-1][j-1][k] + (a[i] / k));
				if (k > 1 && b[i] != -1) dp[i][j][k] = min(dp[i][j][k], dp[i-1][j-1][k-1] + b[i] / (k-1));
				//cout << dp[i][j][k] <<" ";
				if (j >= K) ans = min(ans, dp[i][j][k]);
			}
			//cout << "\n";
		}
	}
	cout << fixed << setprecision(6) << ans << "\n";
	//for (auto &i : v) cout << i.first <<" " << i.second << "\n";
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 415 ms 1018748 KB Output is correct
2 Correct 359 ms 1018520 KB Output is correct
3 Correct 367 ms 1018448 KB Output is correct
4 Correct 358 ms 1018508 KB Output is correct
5 Correct 417 ms 1018516 KB Output is correct
6 Correct 415 ms 1018584 KB Output is correct
7 Correct 426 ms 1018788 KB Output is correct
8 Correct 427 ms 1018580 KB Output is correct
9 Correct 416 ms 1018384 KB Output is correct
10 Correct 430 ms 1018448 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 415 ms 1018748 KB Output is correct
2 Correct 359 ms 1018520 KB Output is correct
3 Correct 367 ms 1018448 KB Output is correct
4 Correct 358 ms 1018508 KB Output is correct
5 Correct 417 ms 1018516 KB Output is correct
6 Correct 415 ms 1018584 KB Output is correct
7 Correct 426 ms 1018788 KB Output is correct
8 Correct 427 ms 1018580 KB Output is correct
9 Correct 416 ms 1018384 KB Output is correct
10 Correct 430 ms 1018448 KB Output is correct
11 Correct 353 ms 1018588 KB Output is correct
12 Correct 441 ms 1018588 KB Output is correct
13 Correct 421 ms 1018452 KB Output is correct
14 Correct 421 ms 1018964 KB Output is correct
15 Correct 452 ms 1018448 KB Output is correct
16 Correct 425 ms 1018764 KB Output is correct
17 Correct 412 ms 1018520 KB Output is correct
18 Correct 442 ms 1018584 KB Output is correct
19 Correct 435 ms 1018584 KB Output is correct
20 Correct 414 ms 1018700 KB Output is correct

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 368 ms 1018700 KB Output is correct
2 Correct 372 ms 1018340 KB Output is correct
3 Correct 355 ms 1018724 KB Output is correct
4 Correct 363 ms 1018384 KB Output is correct
5 Correct 365 ms 1018448 KB Output is correct
6 Correct 358 ms 1018448 KB Output is correct
7 Correct 361 ms 1018508 KB Output is correct
8 Correct 359 ms 1018448 KB Output is correct
9 Incorrect 366 ms 1018504 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 368 ms 1018700 KB Output is correct
2 Correct 372 ms 1018340 KB Output is correct
3 Correct 355 ms 1018724 KB Output is correct
4 Correct 363 ms 1018384 KB Output is correct
5 Correct 365 ms 1018448 KB Output is correct
6 Correct 358 ms 1018448 KB Output is correct
7 Correct 361 ms 1018508 KB Output is correct
8 Correct 359 ms 1018448 KB Output is correct
9 Incorrect 366 ms 1018504 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 368 ms 1018700 KB Output is correct
2 Correct 372 ms 1018340 KB Output is correct
3 Correct 355 ms 1018724 KB Output is correct
4 Correct 363 ms 1018384 KB Output is correct
5 Correct 365 ms 1018448 KB Output is correct
6 Correct 358 ms 1018448 KB Output is correct
7 Correct 361 ms 1018508 KB Output is correct
8 Correct 359 ms 1018448 KB Output is correct
9 Incorrect 366 ms 1018504 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 444 ms 1018460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 415 ms 1018748 KB Output is correct
2 Correct 359 ms 1018520 KB Output is correct
3 Correct 367 ms 1018448 KB Output is correct
4 Correct 358 ms 1018508 KB Output is correct
5 Correct 417 ms 1018516 KB Output is correct
6 Correct 415 ms 1018584 KB Output is correct
7 Correct 426 ms 1018788 KB Output is correct
8 Correct 427 ms 1018580 KB Output is correct
9 Correct 416 ms 1018384 KB Output is correct
10 Correct 430 ms 1018448 KB Output is correct
11 Correct 353 ms 1018588 KB Output is correct
12 Correct 441 ms 1018588 KB Output is correct
13 Correct 421 ms 1018452 KB Output is correct
14 Correct 421 ms 1018964 KB Output is correct
15 Correct 452 ms 1018448 KB Output is correct
16 Correct 425 ms 1018764 KB Output is correct
17 Correct 412 ms 1018520 KB Output is correct
18 Correct 442 ms 1018584 KB Output is correct
19 Correct 435 ms 1018584 KB Output is correct
20 Correct 414 ms 1018700 KB Output is correct
21 Correct 368 ms 1018700 KB Output is correct
22 Correct 372 ms 1018340 KB Output is correct
23 Correct 355 ms 1018724 KB Output is correct
24 Correct 363 ms 1018384 KB Output is correct
25 Correct 365 ms 1018448 KB Output is correct
26 Correct 358 ms 1018448 KB Output is correct
27 Correct 361 ms 1018508 KB Output is correct
28 Correct 359 ms 1018448 KB Output is correct
29 Incorrect 366 ms 1018504 KB Output isn't correct
30 Halted 0 ms 0 KB -