Submission #1069954

#	Time	Username	Problem	Language	Result	Execution time	Memory
1069954		Joshua_Andersson	Meetings (IOI18_meetings)	C++14	19 / 100	5550 ms	7260 KiB

meetings

#include "meetings.h"

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

typedef long long ll;
const ll linf = ll(1e18);

typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> p2;

#define rep(i, high) for (int i = 0; i < high; i++)
#define repp(i, low, high) for (int i = low; i < high; i++)
#define repe(i, container) for (auto& i : container)
#define sz(container) ((int)container.size())
#define all(x) begin(x),end(x)

#if _LOCAL
#define assert(x) if (!(x)) __debugbreak()
#endif

typedef vector<ll> vll;

struct node
{
	int best, l, r;
	int mid;
	node *lc, *rc;
};

vll h;
int n;
node* build_tree(int l, int r)
{
	return 0;
}

ll solve(int l, int r)
{
	if (l > r) return 0;
	if (l==r)
	{
		return h[l];
	}
	ll largest = 0;
	repp(i, l, r + 1) largest = max(largest, h[i]);

	ll ret = (r - l + 1) * largest;

	vll lindex;
	repp(i, l, r + 1) if (h[i] == largest) lindex.push_back(i);
	lindex.insert(lindex.begin(), l - 1);
	lindex.push_back(r + 1);

	ll tot_len = r - l + 1;
	repp(i, 1, sz(lindex))
	{
		ll interval_len = (lindex[i]-1) - (lindex[i - 1]+1) + 1;
		ret = min(ret, (tot_len - interval_len) * largest + solve(lindex[i - 1] + 1, lindex[i] - 1));
	}
	return ret;
}

vll minimum_costs(vi H, std::vector<int> L, std::vector<int> R)
{
	h = vll(H.begin(), H.end());
	n = sz(h);
	build_tree(0, n - 1);
	int q = sz(L);
	vll ret(q);
	rep(qu, q)
	{
		int l = L[qu];
		int r = R[qu];
		ret[qu] = solve(l, r);
	}
	return ret;
}

• Subtask 1: 4 / 4
• Subtask 2: 15 / 15
• Subtask 3: 0 / 17
• Subtask 4: 0 / 24
• Subtask 5: 0 / 40