#include <iostream>
#include <fstream>
#include <map>
#include <set>
#include <algorithm>
#include <vector>
#include <string>
#include <stdlib.h>
#include <math.h>
#include <numeric>
#include <cmath>
#include <cstdlib>
#include <iostream>
#include <sstream>
#include <cstring>
#include <cstdio>
#include <complex>

using namespace std;

int print_dbg = 1;

#define d_print(x) { if(print_dbg){  cout<<#x<<"="<<(x)<<endl; } }

typedef vector<string> vecs;
typedef vector<int> veci;
typedef unsigned long long ull;
typedef long long ll;

#define ALL(x) (x).begin(), (x).end()
#define IN(x,y) ((x).find((y)) != (x).end())


vector<string> expand( const string & input, string delimiters = " \t")
{
	#define string_find(del,k) ((del).find((k)) != string::npos)
	vector<string> out;
	size_t begin = 0;
	size_t i;
	for( i = 0; i < input.length( ); i++ )
	{
		if( i > 0 && string_find( delimiters, input[i] ) && !string_find( delimiters, input[i-1] ) )
		{
			out.push_back( input.substr( begin, i - begin ) );
			begin = i+1 ;
		}
		else
		{
			if( string_find( delimiters, input[i] ) ){ begin = i+1; }
		}
	}
	if( begin < i )
	{
		out.push_back( input.substr( begin ) );
	}
	return out;
}




int main( int argc, char ** argv )
{
	string p = "../A";
	//  freopen((p + "-small-attempt0.in").c_str(),"r",stdin);freopen((p + "-small-attempt0.out").c_str(),"w",stdout);
	//  freopen((p + "-small-attempt1.in").c_str(),"r",stdin);freopen((p + "-small-attempt1.out").c_str(),"w",stdout);
	//  freopen((p + "-small-attempt2.in").c_str(),"r",stdin);freopen((p + "-small-attempt2.out").c_str(),"w",stdout);
	  freopen((p + "-large.in").c_str(),"r",stdin);freopen((p + "-large.out").c_str(),"w",stdout);

	if( argv[1] == "q" ) print_dbg = 0;
}