Submission #213381

#	Time	Username	Problem	Language	Result	Execution time	Memory
213381		_Ice_Tea_	Data Transfer (IOI19_transfer)	C++14	15 / 100	318 ms	3560 KiB

transfer

#include<bits/stdc++.h>
#include "transfer.h"

using namespace std;

std::vector<int> get_attachment(std::vector<int> source) {

	int i,j;

	int N = source.size();
	vector<int> attach;
	int key = 0;
	for( i=0; i < N; i++)
	{
		attach.push_back( source[i] );
		key ^= source[i];
	}
	attach.push_back(key);
	return attach;
}

std::vector<int> retrieve(std::vector<int> data) {

	int i,j;
	int N = data.size() / 2;

	vector<int> ans;
	bool flag = 0;
	for( i=0; i<N; i++)
	{
		if( data[i] != data[N+i] )
			flag = 1;
	}

	if( flag )
	{
		int key = 0;
		for( i=0; i<N; i++)
			key ^= data[i];

		if( key == data.back())
		{
			for( i=0; i<N; i++)
				ans.push_back(data[i]);
		}
		else
		{
			for( i=0; i<N; i++)
				ans.push_back(data[N+i]);
		}
	}
	else
	{
		for( i=0; i<N; i++)
			ans.push_back(data[i]);
	}
	return ans;
}

Compilation message (stderr)

transfer.cpp: In function 'std::vector<int> get_attachment(std::vector<int>)':
transfer.cpp:8:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j;
        ^
transfer.cpp: In function 'std::vector<int> retrieve(std::vector<int>)':
transfer.cpp:24:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j;
        ^

• Subtask 1: 9 / 60
• Subtask 2: 6 / 40