Submission #1062892

#	Time	Username	Problem	Language	Result	Execution time	Memory
1062892		nvujica	Roller Coaster Railroad (IOI16_railroad)	C++14	0 / 100	61 ms	11436 KiB

railroad

#include <bits/stdc++.h>
#include "railroad.h"
#define fi first
#define se second

using namespace std;

const int inf = 1e9;

vector <pair<int, int> > v;

long long plan_roller_coaster(vector<int> s, vector<int> t) {
    int n = s.size();

    for(int i = 0; i < n; i++){
        v.push_back({t[i], 1});
        v.push_back({s[i], -1});
    }

    v.push_back({1, 1});
    v.push_back({inf, -1});

    sort(v.begin(), v.end());

    int sum = 0;

    for(int i = 0; i < v.size(); i++){
        sum += v[i].se;

        if(sum < 0) return 0;
    }

    return 1;
}

Compilation message (stderr)

railroad.cpp: In function 'long long int plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:27:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for(int i = 0; i < v.size(); i++){
      |                    ~~^~~~~~~~~~

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