/*
 * =========================================================================
 *
 *       FileName:  lt_070.cpp
 *
 *    Description:
 *
 *        Version:  1.0
 *        Created:  2021-08-26 12:11:06
 *  Last Modified:  2021-08-26 12:12:00
 *       Revision:  none
 *       Compiler:  gcc
 *
 *         Author:  zt ()
 *   Organization:
 *
 * =========================================================================
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>

#include <iostream>
#include <memory>
#include <algorithm>
#include <vector>
#include <thread>
#include <mutex>
#include <map>
#include <list>
#include <string>
#include <functional>

using namespace std;

int f ( int x )
{
    if ( x >= 2 )
        return f ( x - 2 ) + f ( x - 1 );

    return 1;
}

int main ( int argc, char* argv[] )
{
    ( void ) argc;
    ( void ) argv;

    cout << f ( 44 ) << endl;

    return 0;
}