Submission #73004

#	Time	Username	Problem	Language	Result	Execution time	Memory
73004		Kmcode	Roller Coaster Railroad (IOI16_railroad)	C++14	0 / 100	167 ms	7756 KiB

railroad

	#include<bits/stdc++.h>
	using namespace std;
	//#include "railroad.h"

	vector<pair<int,int> > v;
	 
	long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
	    int n = (int) s.size();
	    for(int i=0;i<n;i++){
			v.push_back(make_pair(s[i],1));
			v.push_back(make_pair(t[i],0));
		}
		sort(v.begin(),v.end());
		reverse(v.begin(),v.end());
		bool ok=false;
		int stk=0;
		int en=0;
		for(int i=0;i<v.size();i++){
			if(v[i].second==1){
				stk++;
			}
			else{
				if(stk){
					stk--;
					continue;
				}
				if(stk==0){
						if(en==0){
							en=1;
							break;
						}
						ok=true;
						break;
				}
			}
		}
	    return ok;
	}

Compilation message (stderr)

railroad.cpp: In function 'long long int plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:18:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<v.size();i++){
               ~^~~~~~~~~

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