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#include <iostream>

#include "poszukiwania.h"
#include "message.h"

long long seq_length;
long long sig_lenght;

size_t pos(size_t begin, size_t end)
{
	size_t result = 0;

	int *t = new int[sig_lenght + 1];

	t[0] = -1;

	for (size_t i = 1; i <= sig_lenght; i++)
	{
		int pos = t[i - 1];

		while (pos != -1 && SignalAt(pos + 1) != SignalAt(i - 1 + 1))
		{
			pos = t[pos];
		}

		t[i] = pos + 1;
	}

	size_t sp = begin;
	size_t kp = 0;

	size_t safe_end = end + sig_lenght;

	if (safe_end > seq_length)
	{
		safe_end = seq_length;
	}

	while (sp < safe_end)
	{
		while (kp != -1 && (kp == sig_lenght || SignalAt(kp + 1) != SeqAt(sp + 1)))
		{
			kp = t[kp];
		}

		kp++;
		sp++;

		if (sp - kp >= end)
		{
			break;
		}

		if (kp == sig_lenght)
		{
			++result;
		}
	}

	return result;
}

void init()
{
	size_t n = NumberOfNodes();

	size_t len = seq_length / n;

	size_t begin = 0;

	for (size_t i = 1; i < n; ++i)
	{
		PutLL(i, begin);
		PutLL(i, begin += len);
		
		Send(i);
	}

	PutLL(0, begin);
	PutLL(0, seq_length);

	Send(0);
}

size_t master()
{
	size_t result = 0;

	size_t n = NumberOfNodes();

	for (size_t i = 0; i < n; ++i)
	{
		int source = Receive(-1);

		result += GetLL(source);
	}

	return result;
}

void slave()
{
	int source = Receive(-1);

	size_t begin = GetLL(source);
	size_t end = GetLL(source);

	PutLL(source, pos(begin, end));

	Send(source);
}

int main()
{
	seq_length = SeqLength();
	sig_lenght = SignalLength();

	if (MyNodeId() == 0)
	{
		init();
	}

	slave();

	if (MyNodeId() == 0)
	{
		std::cout << master() << std::endl;
	}

	return 0;
}