int pow (int a, int b) {
    var out = 1;
    while (b != 0) {
        out = out * a;
        b = b - 1;
    }
    return out;
}

int remainder (int a, int b) {
    if (b == 0) {
        print_string("Can't divide by 0");
        return -1;
    }

    while (a >= b) {
        a = a - b;
    }

    return a;
}

int divide (int a, int b) {
    if (b == 0) {
        print_string("Can't divide by 0");
        return -1;
    }

    var out = 0;
    while (a >= b) {
        a = a - b;
        out = out + 1;
    }

    return out;
}

int is_evil (int a) {
    if (a < 0) {
        return 0;
    }
    var cont = true;
    var y = 0;
    var num1 = 0;
    var num2 = 0;
    var r = 0;
    var remctr = 0;
    while (cont) {
        num1 = pow(2, y);
        r = remainder(a, num1);
        if (r == a) {
            cont = false;
        } else {
            y = y + 1;
        }
    }
    for (var i = 0; i < y; i = i + 1;) {
        num1 = pow(2, i);
        num2 = divide(a, num1);
        if (remainder(num2, 2) == 1) {
            remctr = remctr + 1;
        }
    }
    if (remainder(remctr, 2) == 0) {
        return 1;
    }
    return 0;
}

int program(int argc, string[] argv) {
    return is_evil(378);
}