#include <stdio.h>
#include <math.h>

#define EXP 2.718281828

double min2(double a, double b)
{
	return (a < b) ? a : b;
}

double max2(double a, double b)
{
	return (a > b) ? a : b;
}

double min3(double a, double b, double c)
{
	double temp = min2(a, b);
	return (temp < c) ? temp : c;
}

double z(double a, double b, double c)
{
	if (a*a - b*b + c >= 0)
	{
		return a + min3(a, b, c);
	}
	else if (b >= 0)
	{
		return 0.2*pow(a + b, 2) + powf(EXP, 0.1*c);
	}
	else
	{
		return max2(a, b) + a*a;
	}
}

#include <iostream>
#include <cmath>
#include <cstdlib>
#include <ctime>

using namespace std;

#define _E 2.71828182845

float min(float a, float b, float c)
{
	if (a < b && a < c) return a;
	if (b < a && b < c) return b;
	if (c < a && c < b) return c;
}

float max(float b, float c)
{
	if (b>c) return b;
	else return c;
}


void f3()
{
	float a, b, c, z;
	a = 1.0; b = 2.0; c = 3.0;
	if (a*a - b*b + c >= 0) { z = a + min(a, b, c); }
	else if (a*a - b*b + c < 0 && b >= 0) { z = 0.2 * (a + b)*(a + b) + exp(0.1*c); }
	else if (a*a - b*b + c < 0 && b < 0) { z = max(b, c) + a*a; }
	cout << "f3: " << z << "\n";
}



void main()
{

	(f3);

}

(f3)

        double a, b, c, z;
	a = 1.0; b = 2.0; c = 3.0;
        double p = a*a - b*b + c;
	if (p >= 0) { 
               z = a + min(a, b, c); 
        } else if (p < 0 && b >= 0) { 
               z = 0.2 * (a + b)*(a + b) + exp(0.1*c); 
        } else if (p < 0 && b < 0) { 
               z = max(b, c) + a*a; 
        }
	cout << "f3: " << z << "\n";

        double a, b, c, z;
	a = 1.0; b = 2.0; c = 3.0;
        double p = a*a - b*b + c;
	if (p >= 0) { 
               z = a + min(a, b, c); 
        } else if (b >= 0) { 
               z = 0.2 * (a + b)*(a + b) + exp(0.1*c); 
        } else { 
               z = max(b, c) + a*a; 
        }
	cout << "f3: " << z << "\n";