oj.uz

Submission #802692

# Submission time Handle Problem Language Result Execution time Memory
802692 2023-08-02T13:26:56 Z acatmeowmeow Let's Win the Election (JOI22_ho_t3) C++11
10 / 100
 5 ms 340 KB 
#include <bits/stdc++.h>

using namespace std;

#define int long long 

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int n, K;
	cin >> n >> K;
	vector<int> a(n + 5), b(n + 5), index;
	for (int i = 1; i <= n; i++) cin >> a[i] >> b[i];
	vector<int> arr(a);
	sort(arr.begin() + 1, arr.begin() + n + 1);
	double ans = 0;
	for (int i = 1; i <= K; i++) ans += (double)arr[i];
	for (int i = 1; i <= n; i++) if (b[i] != -1) index.push_back(i);
	sort(index.begin(), index.end(), [&](int x, int y){ return b[x] < b[y]; });
	vector<int> mark(n + 5);
	double prefix = 0;
	int cnt = 0;
	for (auto&i : index) {
		mark[i] = true;
		cnt++;
		prefix += (double)b[i]/cnt;
		double res = prefix;
		vector<int> rem;
		for (int j = 1; j <= n; j++) if (!mark[j]) rem.push_back(j);
		sort(rem.begin(), rem.end(), [&](int x, int y) { return a[x] < a[y]; });
		for (int j = 0, cur = cnt; j < rem.size() && cur < K; j++, cur++) res += (double)a[rem[j]]/(cnt + 1);
		ans = min(ans, res);
	}	
	cout << fixed << setprecision(10) << ans << '\n';
	return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:31:32: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |   for (int j = 0, cur = cnt; j < rem.size() && cur < K; j++, cur++) res += (double)a[rem[j]]/(cnt + 1);
      |                              ~~^~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 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 0 ms 212 KB Output is correct
3 Correct 0 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 1 ms 340 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 320 KB Output is correct
12 Correct 5 ms 340 KB Output is correct
13 Correct 4 ms 320 KB Output is correct
14 Correct 2 ms 320 KB Output is correct
15 Correct 5 ms 340 KB Output is correct
16 Correct 4 ms 320 KB Output is correct
17 Correct 2 ms 340 KB Output is correct
18 Correct 5 ms 340 KB Output is correct
19 Correct 5 ms 340 KB Output is correct
20 Correct 2 ms 324 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 340 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 320 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Incorrect 0 ms 320 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 340 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 320 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Incorrect 0 ms 320 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 340 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 320 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Incorrect 0 ms 320 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 340 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 0 ms 212 KB Output is correct
3 Correct 0 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 1 ms 340 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 320 KB Output is correct
12 Correct 5 ms 340 KB Output is correct
13 Correct 4 ms 320 KB Output is correct
14 Correct 2 ms 320 KB Output is correct
15 Correct 5 ms 340 KB Output is correct
16 Correct 4 ms 320 KB Output is correct
17 Correct 2 ms 340 KB Output is correct
18 Correct 5 ms 340 KB Output is correct
19 Correct 5 ms 340 KB Output is correct
20 Correct 2 ms 324 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 320 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Incorrect 0 ms 320 KB Output isn't correct
30 Halted 0 ms 0 KB -