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def task1(a=1, b=2, eps=0.0001):  # Метод ломаных
    # Определяем коэфициенты. Коэфициенты взяты как четвертый знак курса евро\рубль за 28.03-05.04
    coef = (5, 4, 6, 6, 1, 9, 4)
    # Определяем функцию
    f = lambda x: abs(abs(abs(coef[0]*x*x + coef[1]*x) - abs(coef[2]*x*x-coef[3])) - abs(coef[4]*x*x-coef[5]*x+coef[6]))
    # Определяем L
    L, M, i = 0, 0, a
    while i < b:
        M = f(i) / eps
        L = max(M, L)

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#include <exception>
#include <codecvt>

#include <streambuf>
#include <string>
#include <cerrno>
#include <sstream>

using namespace std;

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boost::shared_mutex _access;
void reader()
{
  boost::shared_lock< boost::shared_mutex > lock(_access);
  // do work here, without anyone having exclusive access
}

void conditional_writer()
{
  boost::upgrade_lock< boost::shared_mutex > lock(_access);

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template<class ADVANCE_STRATEGY>
class base_iterator : ADVANCE_STRATEGY
{
private:
    int * pointer;
public:
    base_iterator & operator++()
    {
        advance(pointer);
    }

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class base_iterator
{
private:
    int * pointer;
    
protected:
    virtual void advance(int *& pointer) = 0;
    
public:
    base_iterator & operator++()

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#pragma once

#include <cstdio>
#include <cstdarg>

template<typename T>
class result
{
private:
	T value;

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#include <iostream>
#include <string>
#include <unordered_map>
#include <map>
#include <utility>
#include <queue>
#include <stdio.h>
#include <cstdlib>

char st[900001];

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#include <vector>
#include <iostream>
#include <string>

void prefix_function (const std::string & s, std::vector<int> & pi) 
{
	size_t length = s.length();
	pi.resize(length);
	for (size_t i = 1; i < length; ++i) 
	{

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#include <vector>
#include <string>
#include <iostream>
#include <algorithm>

void z_function (const std::string & s, std::vector<int> & z) 
{
	size_t length = s.length();
	z.clear();
	z.resize(length);

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#include <sstream>
#include <string>
#include <iostream>

int main()
{
	std::string st("192.255.a.0");
	std::istringstream iss(st);
	std::string st1;
	int count = std::count(st.begin(), st.end(), '.');