Submission #722565

#	Time	Username	Problem	Language	Result	Execution time	Memory
722565		ymm	Roller Coaster Railroad (IOI16_railroad)	C++17	0 / 100	253 ms	12836 KiB

railroad

#include "railroad.h"
#include <bits/stdc++.h>
#define Loop(x,l,r) for (ll x = (l); x < (ll)(r); ++x)
#define LoopR(x,l,r) for (ll x = (r)-1; x >= (ll)(l); --x)
typedef long long ll;
typedef std::pair<int, int> pii;
typedef std::pair<ll , ll > pll;
using namespace std;

long long plan_roller_coaster(std::vector<int> s, std::vector<int> t)
{
	s.push_back(1e9+10);
	t.push_back(1);
	int n = s.size();
	set<pii> S;
	Loop (i,0,n)
		S.insert({s[i], i});
	ll ans = 0;
	int p = 1;
	while (S.size()) {
		auto it = S.lower_bound(pii{p, INT_MIN});
		if (it == S.end())
			--it;
		int i = it->second;
		ans += max(0, p - s[i]);
		p = t[i];
		S.erase(it);
	}
	ans += p-1;
	return ans;
}

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