Submission #911344

#	Time	Username	Problem	Language	Result	Execution time	Memory
911344		denniskim	Cake 3 (JOI19_cake3)	C++17	5 / 100	4046 ms	520 KiB

cake3

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef __int128 lll;
typedef long double ld;
typedef pair<ll, ll> pll;
typedef pair<ld, ld> pld;
#define MAX 9223372036854775807LL
#define MIN -9223372036854775807LL
#define INF 0x3f3f3f3f3f3f3f3f
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); cout << fixed; cout.precision(10);
#define sp << " "
#define en << "\n"
#define compress(v) sort(v.begin(), v.end()), v.erase(unique(v.begin(), v.end()), v.end())

struct gujo
{
	ll V, C;
	
	bool operator < (const gujo &xx) const
	{
		return C < xx.C;
	}
};

ll n, m;
gujo a[200010];
ll ans = -INF;
ll last = -1;

int main(void)
{
	fastio
	
	cin >> n >> m;
	
	for(ll i = 1 ; i <= n ; i++)
		cin >> a[i].V >> a[i].C;
	
	sort(a + 1, a + 1 + n);
	
	for(ll i = m ; i <= n ; i++)
	{
		ll idx = -1, maxx = -INF;
		
		for(ll j = 1 ; j <= i - m + 1 ; j++)
		{
			ll sum = a[j].V + 2 * a[j].C + a[i].V - 2 * a[i].C;
			vector<ll> gap;
			
			for(ll k = j + 1 ; k < i ; k++)
				gap.push_back(a[k].V);
			
			sort(gap.begin(), gap.end());
			
			for(ll k = 0 ; k < m - 2 ; k++)
				sum += gap[(ll)gap.size() - 1 - k];
			
			if(maxx < sum)
			{
				maxx = sum;
				idx = j;
			}
		}
		
		ans = max(ans, maxx);
		
		if(last > idx)
			assert(0);
		
		last = idx;
	}
	
	cout << ans;
	return 0;
}

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