#include <cstdio>
#include <cstdlib>
#include <conio.h>
#include <windows.h>
#include <ctime>
#include <math.h>
#include <iostream>
#include <iomanip>

using namespace std;

long double f(int x) {
    // Wartosc  pi z pliku math.h: M_PI.
    return (1/(sqrt(2*M_PI)))*exp(-(pow(x,2))/2);
}


int main()
{
	int maximum=4;
	int minimum=-4;

    double x=0;
	int j=0;

	float y=0;
	float pi=3.14;
	long double fmax=0;
	long double fxi=0;
	int d=0;


int tablica [9];
	int z=0;
	for (z=0; z <9; ++z){
        tablica[z]=0;
	}

    fmax=f(0);
    cout <<"f(0)="<<fmax<< endl;

	srand(time( NULL ));

	for( int i = 1; i <= 10000; )
{
    x= minimum+rand()% (maximum-(minimum)+1);
    fxi=f(x);
	y=(((double)(rand())/RAND_MAX)*fmax);


	cout << i << ": " << "y = " <<setprecision(3) << y << ", x = " << x << ", fxi = " <<setprecision(3) << fxi;


	if (y <= fxi) {
          cout << " - OK";
          i++;
          z=x+4;
          tablica[z]++;
        }
        cout << endl;
}

for(z=0;z<9;++z){
printf("%d\n",tablica[z]);
}

    return 0;
    getch();


}