Value of expression 1 (#8831)

Algorithm Analysis

To solve the problem, one needs to calculate the value of the given expression.

Algorithm Implementation

Read the values of the input data.

scanf("%lf %lf", &x, &y);

Calculate the value of the variable $z$ .

z = 2 * x * x - 4 * x * y + 3 * y * y + (x + y) / 7;

Output the result to three decimal places.

printf("%.3lf\n", z);

Java Implementation

import java.util.*;

public class Main
{
    public static void main(String[] args)
    {
        Scanner con = new Scanner(System.in);
        double x = con.nextDouble();
        double y = con.nextDouble();
        double z = 2 * x * x - 4 * x * y + 3 * y * y + (x + y) / 7;
        System.out.println(z);
        con.close();
    }
}

Python Implementation

x, y = map(float, input().split())
z = 2 * x * x - 4 * x * y + 3 * y * y + (x + y) / 7;
print(z)