Submission #722552

#	Time	Username	Problem	Language	Result	Execution time	Memory
722552		ymm	Roller Coaster Railroad (IOI16_railroad)	C++17	0 / 100	230 ms	16688 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)
{
	int n = s.size();
	set<pii> S;
	Loop (i,0,n)
		S.insert({s[i], i});
	int cnt = 0;
	while (S.size()) {
		int i = S.begin()->second;
		int is = s[i], it = t[i];
		S.erase(S.begin());
		while (is < it) {
			auto p = S.lower_bound(pii{it, INT_MIN});
			if (p == S.end()) {
				++cnt;
				break;
			}
			int j = p->second;
			S.erase(p);
			it = t[j];
		}
	}
	return cnt > 1;
}

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