Submission #73009

#	Time	Username	Problem	Language	Result	Execution time	Memory
73009		Kmcode	Roller Coaster Railroad (IOI16_railroad)	C++14	0 / 100	176 ms	10776 KiB

railroad

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

	vector<pair<int,int> > v;
	map<int,int> same;
	 
	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++){
			if(s[i]==t[i]){
				v.push_back(make_pair(s[i],1));
				continue;
			}
			v.push_back(make_pair(s[i],2));
			v.push_back(make_pair(t[i],0));
		}
		sort(v.begin(),v.end());
		bool ok=false;
		int stk=0;
		int en=0;
		while( v.size() ) {
			auto f=v.back();
			v.pop_back();
			if(f.second==2){
				stk++;
			}
			else{
				if(f.second==1){
					v.push_back(make_pair(f.first,2));
					v.push_back(make_pair(f.first,0));
					continue;
				}
				if(stk){
					stk--;
					continue;
				}
				if(stk==0){
						if(en==0){
							en=1;
							continue;
						}
						ok=true;
						break;
				}
			}
		}
	    return ok;
	}
	

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