oj.uz

답안 #887335

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
887335 2023-12-14T09:19:24 Z dubabuba Let's Win the Election (JOI22_ho_t3) C++14
23 / 100
 488 ms 596 KB 
#include <bits/stdc++.h>
using namespace std;
 
const int inf = 1e9 + 10;
const int mxn = 550;
int a[mxn], n;
int b[mxn], k;
 
vector<int> good;
vector<int> badd;
 
double ans = 1e9;
void solve2(int map) {
	vector<int> vote = badd;
	vector<int> help;
	double ret = 0.0;
 
	for(int i = 0; i < good.size(); i++)
	if(map & (1 << i))
		help.push_back(good[i]);
	else
		vote.push_back(good[i]);
 
	if(help.size() > k) return;
 
	sort(help.begin(), help.end(), [&](int i, int j) { return b[i] < b[j]; });
	sort(vote.begin(), vote.end(), [&](int i, int j) { return a[i] < a[j]; });
 
	int helpers = 0;
	for(int i : help) {
		ret += 1.0 * b[i] / (1.0 + helpers);
		helpers++;
	}
 
	for(int j = 0; j < (k - help.size()); j++) {
		int i = vote[j];
		ret += 1.0 * a[i] / (1.0 + helpers);
	}
 
	ans = min(ans, ret);
}
 
void sub2() {
	for(int bit = 0; bit < (1 << good.size()); bit++)
		solve2(bit);
	cout << setprecision(5) << fixed << ans << '\n';
	exit(0);
}
 
void solve1(int t) {
	if(k - t >= badd.size()) return;
	double ret = 0.0;
 
	int helpers = 0;
	for(int j = 0; j < t; j++) {
		int i = good[j];
		ret += 1.0 * a[i] / (1.0 + helpers);
		helpers++;
	}

	vector<int> help = badd;
	for(int j = t; j < good.size(); j++)
		help.push_back(good[j]);
	sort(help.begin(), help.end(), [&](int i, int j) { return a[i] < a[j]; });
 
	assert(helpers == t);
	for(int j = 0; j < (k - t); j++) {
		int i = help[j];
		ret += 1.0 * a[i] / (1.0 + t);
	}
 
	ans = min(ans, ret);
}
 
void sub1() {
	sort(good.begin(), good.end(), [&](int i, int j) { return a[i] < a[j]; });
	sort(badd.begin(), badd.end(), [&](int i, int j) { return a[i] < a[j]; });
 
	for(int i = 0; i <= good.size() && i < k; i++)
		solve1(i);
	cout << setprecision(5) << fixed << ans << '\n';
	exit(0);
}
 
int main() {
	cin >> n >> k;
	for(int i = 0; i < n; i++) {
		cin >> a[i] >> b[i];
		if(b[i] == -1) {
			b[i] = inf;
			badd.push_back(i);
		}
		else
			good.push_back(i);
	}
 
	if(n <= 20) sub2();
	sub1();
	return 0;
}

Compilation message

Main.cpp: In function 'void solve2(int)':
Main.cpp:18:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |  for(int i = 0; i < good.size(); i++)
      |                 ~~^~~~~~~~~~~~~
Main.cpp:24:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   24 |  if(help.size() > k) return;
      |     ~~~~~~~~~~~~^~~
Main.cpp:35:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |  for(int j = 0; j < (k - help.size()); j++) {
      |                 ~~^~~~~~~~~~~~~~~~~~~
Main.cpp: In function 'void solve1(int)':
Main.cpp:51:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |  if(k - t >= badd.size()) return;
      |     ~~~~~~^~~~~~~~~~~~~~
Main.cpp:62:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |  for(int j = t; j < good.size(); j++)
      |                 ~~^~~~~~~~~~~~~
Main.cpp: In function 'void sub1()':
Main.cpp:79:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   79 |  for(int i = 0; i <= good.size() && i < k; i++)
      |                 ~~^~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 436 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Incorrect 1 ms 436 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 436 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Incorrect 1 ms 436 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #3
11.0 / 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 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 440 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct

Subtask #4
12.0 / 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 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 440 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 303 ms 416 KB Output is correct
17 Correct 362 ms 348 KB Output is correct
18 Correct 44 ms 348 KB Output is correct
19 Correct 472 ms 344 KB Output is correct
20 Correct 27 ms 348 KB Output is correct
21 Correct 6 ms 348 KB Output is correct
22 Correct 454 ms 416 KB Output is correct
23 Correct 25 ms 348 KB Output is correct
24 Correct 2 ms 348 KB Output is correct
25 Correct 488 ms 412 KB Output is correct
26 Correct 128 ms 344 KB Output is correct
27 Correct 481 ms 420 KB Output is correct
28 Correct 453 ms 416 KB Output is correct
29 Correct 469 ms 412 KB Output is correct
30 Correct 473 ms 596 KB Output is correct
31 Correct 453 ms 344 KB Output is correct
32 Correct 467 ms 416 KB Output is correct
33 Correct 466 ms 416 KB Output is correct
34 Correct 451 ms 412 KB Output is correct
35 Correct 472 ms 420 KB Output is correct
36 Correct 472 ms 348 KB Output is correct
37 Correct 456 ms 344 KB Output is correct
38 Correct 452 ms 416 KB Output is correct
39 Correct 482 ms 344 KB Output is correct
40 Correct 480 ms 412 KB Output is correct

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 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 440 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 303 ms 416 KB Output is correct
17 Correct 362 ms 348 KB Output is correct
18 Correct 44 ms 348 KB Output is correct
19 Correct 472 ms 344 KB Output is correct
20 Correct 27 ms 348 KB Output is correct
21 Correct 6 ms 348 KB Output is correct
22 Correct 454 ms 416 KB Output is correct
23 Correct 25 ms 348 KB Output is correct
24 Correct 2 ms 348 KB Output is correct
25 Correct 488 ms 412 KB Output is correct
26 Correct 128 ms 344 KB Output is correct
27 Correct 481 ms 420 KB Output is correct
28 Correct 453 ms 416 KB Output is correct
29 Correct 469 ms 412 KB Output is correct
30 Correct 473 ms 596 KB Output is correct
31 Correct 453 ms 344 KB Output is correct
32 Correct 467 ms 416 KB Output is correct
33 Correct 466 ms 416 KB Output is correct
34 Correct 451 ms 412 KB Output is correct
35 Correct 472 ms 420 KB Output is correct
36 Correct 472 ms 348 KB Output is correct
37 Correct 456 ms 344 KB Output is correct
38 Correct 452 ms 416 KB Output is correct
39 Correct 482 ms 344 KB Output is correct
40 Correct 480 ms 412 KB Output is correct
41 Incorrect 1 ms 348 KB Output isn't correct
42 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 348 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 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 436 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Incorrect 1 ms 436 KB Output isn't correct
10 Halted 0 ms 0 KB -