Submission #293701

#	Time	Username	Problem	Language	Result	Execution time	Memory
293701		VodkaInTheJar	Roller Coaster Railroad (IOI16_railroad)	C++14	0 / 100	2087 ms	12792 KiB

railroad

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

const long long inf = 1e18;

long long plan_roller_coaster(vector <int> s, vector <int> t)
{
	int n = (int)s.size();
	
	long long ans = inf; 
	for (int i = 0; i < n; i++)
	for (int j = 0; j < n; j++)
	if (i != j)
	{
		multiset <pair <int, int> > se;
		for (int k = 0; k < n; k++)
		if (k != i && k != j)
		se.insert({s[k], t[k]});
		
		long long curr_ans = 0;
		int curr_t = t[i];
		while (!se.empty())
		{
			auto it = se.lower_bound({curr_t, 0});
			if (it != se.begin())
			it--;
			
			curr_ans += max(0, curr_t - it->first);
			curr_t = it->second;
			se.erase(it);
		}
		
		curr_ans += max(0, curr_t - s[j]);
		ans = min(ans, curr_ans);
	}
	
	return ans; 
}

/*
int n;
vector <int> s, t;
int main()
{
	cin >> n;
	s.resize(n);
	t.resize(n);
	
	for (int i = 0; i < n; i++)
	cin >> s[i] >> t[i];
	
	cout << plan_roller_coaster(s, t) << endl; 
}
*/

• Subtask 1: 0 / 11
• Subtask 2: 0 / 23
• Subtask 3: 0 / 30
• Subtask 4: 0 / 36