#include "railroad.h"
#include <iostream>
#include <algorithm>
#include <functional>
#include <set>
int n;
std::pair<int, int> a[200010];
std::set< std::pair<int, int>, std::greater< std::pair<int, int> > > set;
//first - output speed, second - index
bool compare(const std::pair<int, int> &lhs, const std::pair<int, int> &rhs)
{
if (lhs.first != rhs.first)
return lhs.second < rhs.second;
else
return lhs.first < rhs.first;
}
long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
n = (int) s.size();
for (int i = 0; i < n; ++i)
{
a[i].first = s[i];
a[i].second = t[i];
set.insert(std::make_pair(t[i], i));
}
set.insert(std::make_pair(1, -1));
std::sort(a, a + n, compare);
for (int i = 0; i < n; ++i)
{
auto it = set.lower_bound(std::make_pair(s[i], -1));
if (it == set.end())
return 0;
set.erase(it);
}
return 1;
}
