Submission #600511

#	Time	Username	Problem	Language	Result	Execution time	Memory
600511		Yazan_Alattar	Roller Coaster Railroad (IOI16_railroad)	C++14	30 / 100	165 ms	15764 KiB

railroad

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

typedef unsigned long long ull;

#define F first

#define S second

#define pb push_back

#define endl "\n"

#define all(x) x.begin(), x.end()

const int M = 100007;

const ll inf = 1e9;

const ll INF = 1e18;

const ll mod = 1e9 + 7;

const double pi = acos(-1);

const double eps = 1e-6;

const int dx[] = {0, -1, 0, 1}, dy[] = {1, 0, -1, 0};

const int block = 320;







long long plan_roller_coaster(std::vector<int> s, std::vector<int> t){

    int n = (int) s.size();

    vector < pair <int,int> > v;

    for(int i = 0; i < n; ++i) v.pb({t[i], s[i]});

    sort(all(v));



    set < pair <int,int> > rem;

    for(int i = 0; i < n; ++i) rem.insert({v[i].S, i});



    for(int i = 0; i < n - 1; ++i){

        auto it = rem.lower_bound({v[i].F, -1});

        if(it == rem.end()) return 1;

        if((*it).S == i) ++it;

        if(it == rem.end()) return 1;

        rem.erase(it);

    }

    return 0;

}

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