Submission #1185275

#	Time	Username	Problem	Language	Result	Execution time	Memory
1185275		PlayVoltz	Tricks of the Trade (CEOI23_trade)	C++20	0 / 100	55 ms	4424 KiB

trade

#include <cstdio>
#include <stdio.h>
#include <stdbool.h>
#include <iostream>
#include <map>
#include <vector>
#include <climits>
#include <stack>
#include <string>
#include <queue>
#include <algorithm>
#include <set>
#include <unordered_set>
#include <unordered_map>
#include <cmath>
#include <cctype>
#include <bitset>
#include <iomanip>
#include <cstring>
#include <numeric>
#include <cassert>
using namespace std;

#define int long long
#define pii pair<int, int>
#define mp make_pair
#define pb push_back
#define fi first
#define se second

int n, k, best=LLONG_MIN/2;
vector<bool> ans;
vector<pii> vect;

void dnc(int l, int r, int optl, int optr){
	if (l>r)return;
	int m=(l+r)/2, mx=LLONG_MIN/2, opt=-1, mn;
	priority_queue<int, vector<int>, greater<int> > pq;
	for (int i=min(m-1, optr), sum=vect[m].se-vect[m].fi; i>=optl; --i){
		sum-=vect[i].fi;
		sum+=vect[i].se;
		pq.push(vect[i].se);
		if (pq.size()>=k)sum-=pq.top(), pq.pop();
		if (pq.size()==k-1&&mx<sum)mx=sum, opt=i, mn=pq.top();
	}
	if (best<mx)best=mx;
	if (opt==-1){
		dnc(l, m-1, optl, optr);
		dnc(m+1, r, optl, optr);
	}
	else{
		dnc(l, m-1, optl, opt);
		dnc(m+1, r, opt, optr);
	}
}

int32_t main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin>>n>>k;
	vect.resize(n);
	ans.resize(n, 0);
	for (int i=0; i<n; ++i)cin>>vect[i].fi;
	for (int i=0; i<n; ++i)cin>>vect[i].se;
	dnc(0, n-1, 0, n-1);
	cout<<best<<"\n";
	for (auto a:ans)cout<<a;
}

• Subtask 0: 0 / 0
• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 25
• Subtask 5: 0 / 45