def tricky_function(a, b=[]):
    b.append(a)
    return b

list1 = tricky_function(1)
list2 = tricky_function(2, [])
list3 = tricky_function(3)

print(list1)
print(list2)
print(list3)

const value = 0.1 + 0.2;
console.log(value === 0.3);

def compute_value(a, b):
    if a % 2 == 0:
        result = a * b
        if result % 3 == 0:
            return result // 3
        else:
            return result + 3
    else:
        result = a + b
        if result % 5 == 0:
            return result // 5
        else:
            return result - 5

output = compute_value(8, 7)
print(output)

#include <iostream>
using namespace std;

void modify(int &x, int &y, int z) {
    x += z;
    y -= z;
    z *= 2;
}

int main() {
    int a = 10;
    int b = 20;
    int c = 5;

    modify(a, b, c);
    cout << a << " " << b << " " << c << endl;

    modify(a, b, c);
    cout << a << " " << b << " " << c << endl;

    return 0;
}

def mystery_function(n):
    if n == 0:
        return 0
    elif n % 2 == 0:
        return mystery_function(n // 2)
    else:
        return 1 + mystery_function(n // 2)

print(mystery_function(10))

function mysteryFunction(arr) {
  return arr
    .filter((x) => x % 2 === 0)
    .map((x) => x * x)
    .reduce((acc, curr) => acc + curr, 0);
}

const numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
console.log(mysteryFunction(numbers));

#include <stdio.h>

int main() {
    int a = 5, b = 10, c = 15;
    int *p1, *p2, *p3;

    p1 = &a;
    p2 = &b;
    p3 = &c;

    *p1 += *p3;
    *p3 -= *p2;
    p2 = p1;
    *p2 *= 2;

    printf("a = %d, b = %d, c = %d\n", a, b, c);

    return 0;
}

var a = 1;

function foo() {
   if (a) {
     var a = 10;
}
console.log(a);
}

foo();

def tricky_function(a, b):
    a[0], b[0] = b[0], a[0]
    a[1].append(b[1])
    b = b[1:]
    a[2] = [sum(a[2]), sum(b)]

x = [1, [2], 3]
y = [4, [5, 6], 7]
tricky_function(x, y)

print(x, y)

#include <iostream>
using namespace std;

int main() {
    int x = 5;
    int y = 10;
    int z = x + y * 2;
    x = z - y;
    cout << x << " " << z << endl;
    return 0;
}

const array = [1, 2, 3];
array[-1] = 0;

console.log(array.length);

function calc (num) {
        return num * 0.01;
}

typeof calc( 'hello');