Submission #1030960

#	Time	Username	Problem	Language	Result	Execution time	Memory
1030960		Warinchai	Roller Coaster Railroad (IOI16_railroad)	C++14	0 / 100	70 ms	13624 KiB

railroad

#include "railroad.h"
#include<bits/stdc++.h>
using namespace std;
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.push_back({s[i],1});
        v.push_back({t[i],-1});
    }
    sort(v.begin(),v.end());
    int val=0;
    for(int i=0;i<v.size();){
        int sp=v[i].first;
        while(i<v.size()&&v[i].first==sp){
            val+=v[i].second;
            i++;
        }
        if(val>1)return 1;
    }
    return 0;
}

Compilation message (stderr)

railroad.cpp: In function 'long long int plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:13:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for(int i=0;i<v.size();){
      |                 ~^~~~~~~~~
railroad.cpp:15:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |         while(i<v.size()&&v[i].first==sp){
      |               ~^~~~~~~~~

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