Submission #149363

#	Time	Username	Problem	Language	Result	Execution time	Memory
149363		Showing Hands (#200)	Crosses on the Grid (FXCUP4_cross)	C++17	100 / 100	269 ms	14440 KiB

cross

#include "cross.h"
#include<bits/stdc++.h>
#define sz(x) ((int)x.size())
#define pb push_back
#define ii pair<int,int>
#define st first
#define nd second
#define ll long long
#define N 200005
#define inf 1000000005
#define MOD 1000000007
using namespace std;

long long SelectCross(int K, std::vector<int> I, std::vector<int> O) {
	
	ll ans=0;

	multiset<int> s;

	s.insert(inf);

	int n=sz(I);

	vector<ii> a(n);

	for(int i=0;i<n;i++) {

		a[i]={I[i],O[i]};

	}

	sort(a.begin(),a.end(),[](ii x,ii y) {

		if(x.st==y.st) return x.nd>y.nd;

		return x.st<y.st;

	});

	for(int i=n-1;i>=0;i--) {

		if(sz(s)==K) ans=max(ans,2ll*(min(*s.begin(),a[i].nd))*a[i].st-(ll)a[i].st*a[i].st);

		s.insert(a[i].nd); 	

		while(sz(s)>K) s.erase(s.begin());

	}

	return ans;

}

• Subtask 1: 8 / 8
• Subtask 2: 55 / 55
• Subtask 3: 37 / 37