Submission #114549

#	Time	Username	Problem	Language	Result	Execution time	Memory
114549		ly20	Roller Coaster Railroad (IOI16_railroad)	C++14	0 / 100	87 ms	5676 KiB

railroad

#include<bits/stdc++.h>
using namespace std;
#include "railroad.h"
const int MAXN=212345;
vector<pair<int,int> > v;
int a[MAXN];
long long plan_roller_coaster(vector<int> e,vector<int> s)
{
	int n=e.size();
	int mx=0,idm=0; 
	for(int i=0;i<n;i++)
	{
		v.push_back(make_pair(s[i],e[i]));
		if(s[i]>mx)
		{
			mx=s[i];
			idm=i;
		}
	}
	sort(v.begin(),v.end());
	long long resp=0;
	for(int i=0;i<n;i++)
	{
		int id=upper_bound(v.begin(),v.end(),make_pair(e[idm],s[idm]))-v.begin();
		id--;
		resp+=max(0,s[id]-e[idm]);
		idm=id;
	}
	return resp;
}

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