Submission #819379

#	Time	Username	Problem	Language	Result	Execution time	Memory
819379		AdamGS	Cake 3 (JOI19_cake3)	C++17	24 / 100	4038 ms	7928 KiB

cake3

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const ll INF=1e18+7;
const int LIM=2e5+7;
pair<ll,ll>T[LIM];
int main() {
	ios_base::sync_with_stdio(0); cin.tie(0);
	ll n, m, ans=-INF;
	cin >> n >> m;
	rep(i, n) cin >> T[i].nd >> T[i].st;
	sort(T, T+n);
	rep(i, n) {
		priority_queue<ll>q;
		ll akt=0;
		for(int j=i+1; j<n; ++j) {
			if(q.size()==m-2) ans=max(ans, akt-2*T[j].st+2*T[i].st+T[i].nd+T[j].nd);
			q.push(-T[j].nd);
			akt+=T[j].nd;
			if(q.size()>m-2) {
				akt+=q.top(); q.pop();
			}
		}
	}
	cout << ans << '\n';
}

Compilation message (stderr)

cake3.cpp: In function 'int main()':
cake3.cpp:22:15: warning: comparison of integer expressions of different signedness: 'std::priority_queue<long long int>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   22 |    if(q.size()==m-2) ans=max(ans, akt-2*T[j].st+2*T[i].st+T[i].nd+T[j].nd);
      |       ~~~~~~~~^~~~~
cake3.cpp:25:15: warning: comparison of integer expressions of different signedness: 'std::priority_queue<long long int>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   25 |    if(q.size()>m-2) {
      |       ~~~~~~~~^~~~

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