제출 #105021

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
105021		YottaByte	Cake 3 (JOI19_cake3)	C++14	24 / 100	307 ms	768 KiB

cake3

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

#define int long long
#define fr first
#define sc second
#define pii pair < int, int >

const int N = 4001;

int n, k;
long long ans = -1e18;
pii a[N];
multiset < int > s;

bool cmp(pii a, pii b) {
	if(a.sc < b.sc) return true;
	else if(a.sc == b.sc) return (a.fr < b.fr);
	else return false;
}

main() {
	cin >> n >> k;
	
	for(int i = 1; i <= n; i++)
		cin >> a[i].fr >> a[i].sc;
	
	sort(a + 1, a + n + 1, &cmp);
	
	long long res = 0;
	for(int i = 1; i <= n; i++) {
		res = a[i].fr;
		while(s.size()) {
			s.erase(s.begin());
		}
		for(int j = i + 1; j <= n; j++) {
			res += a[j].fr;
			if(s.size() > k - 2) {
				res -= *s.begin();
				s.erase(s.begin());
			}
			
			if(s.size() == k - 2)
				ans = max(res - 2ll * (a[j].sc - a[i].sc), ans);
			
			s.insert( a[j].fr );
		}
	}
	
	cout << ans << endl;
}
/***
94 22
17729830 195028137
17729832 195028150
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17729832 195028140
17729832 195028118
17729836 195028176
17729835 195028180
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17729829 195028141
17729835 195028132
17729834 195028115
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17729829 195028137
17729834 195028161
17729836 195028115
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17729834 195028170
17729832 195028132
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17729829 195028191
17729832 195028150
17729829 195028180
17729835 195028118
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17729828 195028160
17729833 195028202
17729829 195028188
17729834 195028107
17729836 195028202
17729830 195028150
17729828 195028137
17729836 195028188
17729831 195028106
17729835 195028176
17729835 195028140
17729834 195028132
17729836 195028137
17729834 195028107
17729834 195028124
17729833 195028137
17729834 195028112
17729834 195028161
17729834 195028154
17729835 195028132
17729832 195028132
17729837 195028202
17729834 195028127
17729830 195028152
17729835 195028150
17729835 195028111
17729829 195028161
17729832 195028137
17729830 195028172
17729829 195028162
17729834 195028161
17729835 195028150
17729834 195028162
17729832 195028114
17729830 195028183
17729829 195028181
17729835 195028113
17729829 195028107
17729835 195028180
17729834 195028145
17729829 195028186
17729837 195028181
17729829 195028159
17729835 195028126
17729836 195028146
17729834 195028118
17729835 195028180
17729832 195028130
17729830 195028172
17729829 195028189
17729834 195028190
17729829 195028150
17729832 195028147
17729833 195028168
17729834 195028120
17729829 195028199
17729834 195028118
17729835 195028178
17729828 195028194
17729837 195028191
17729837 195028170

***/

컴파일 시 표준 에러 (stderr) 메시지

cake3.cpp:22:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
cake3.cpp: In function 'int main()':
cake3.cpp:38:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if(s.size() > k - 2) {
       ~~~~~~~~~^~~~~~~
cake3.cpp:43:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if(s.size() == k - 2)
       ~~~~~~~~~^~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 19 / 19
• Subtask 3: 0 / 76