Submission #283074

#	Time	Username	Problem	Language	Result	Execution time	Memory
283074		MKopchev	Toy Train (IOI17_train)	C++14	5 / 100	15 ms	1920 KiB

train

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

const int nmax=1e6+42;

set< pair<int,int> > edges;

std::vector<int> who_wins(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v) {

	for(int i=0;i<u.size();i++)
        edges.insert({u[i],v[i]});

    vector<int> win(a.size(),0);

	for(int i=a.size()-1;i>=0;i--)
    {
        if(edges.count({i,i})==0)win[i]=win[i+1];
        else if(edges.count({i,i+1})==0)win[i]=r[i];
        else
        {
            if(a[i]==1)
            {
                if(r[i]==1)win[i]=1;
                else win[i]=win[i+1];
            }
            else
            {
                if(r[i]==0)win[i]=0;
                else win[i]=win[i+1];
            }
        }
    }
	return win;
}

Compilation message (stderr)

train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:11:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |  for(int i=0;i<u.size();i++)
      |              ~^~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 11
• Subtask 4: 0 / 11
• Subtask 5: 0 / 12
• Subtask 6: 0 / 51