Submission #289366

#	Time	Username	Problem	Language	Result	Execution time	Memory
289366		Saboon	Roller Coaster Railroad (IOI16_railroad)	C++17	0 / 100	182 ms	18424 KiB

railroad

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

const int maxn = 16;
const ll inf = 1e18;

ll plan_roller_coaster(vector<int> s, vector<int> t){
	int n = (int)s.size();
	vector<pair<int,int>> tmp(n);
	for (int i = 0; i < n; i++)
		tmp[i] = {s[i],t[i]};
	sort(tmp.begin(), tmp.end());
	for (int i = 0; i < n; i++)
		s[i] = tmp[i].first, t[i] = tmp[i].second;
	int start = 0;
	if (t[0] > s[n-1])
		start = 1;
	set<pair<int,int>> S;
	for (int i = 0; i < n; i++)
		if (i != start)
			S.insert({s[i],i});
	while (!S.empty()){
		auto it = S.lower_bound(make_pair(t[start],-1));
		if (it == S.end())
			return 1;
		start = (*it).second;
		S.erase(it);
	}
	return 0;
}

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