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•  contract Owned
•    - function nominateNewOwner(address _ow ...
•    - function acceptOwnership()
•    - function _onlyOwner()
•  contract State is Owned
•    - function setAssociatedContract(addres ...
• library SafeMath
•    - function add(uint256 a, uint256 b)
•    - function sub(uint256 a, uint256 b)
•    - function mul(uint256 a, uint256 b)
•    - function div(uint256 a, uint256 b)
•    - function mod(uint256 a, uint256 b)
• library SafeDecimalMath
•    - function unit()
•    - function preciseUnit()
•    - function multiplyDecimal(uint x, uint ...
•    - function _multiplyDecimalRound(
•    - function multiplyDecimalRoundPrecise( ...
•    - function multiplyDecimalRound(uint x, ...
•    - function divideDecimal(uint x, uint y ...
•    - function _divideDecimalRound(
•    - function divideDecimalRound(uint x, u ...
•    - function divideDecimalRoundPrecise(ui ...
•    - function decimalToPreciseDecimal(uint ...
•    - function preciseDecimalToDecimal(uint ...
•  contract CollateralManagerState is ... *
•    - function incrementTotalLoans()
•    - function long(bytes32 synth)
•    - function short(bytes32 synth)
•    - function incrementLongs(bytes32 synth ...
•    - function decrementLongs(bytes32 synth ...
•    - function incrementShorts(bytes32 synt ...
•    - function decrementShorts(bytes32 synt ...
•    - function getRateAt(uint index)
•    - function getRatesLength()
•    - function updateBorrowRates(uint rate)
•    - function ratesLastUpdated()
•    - function getRatesAndTime(uint index)
•    - function addShortCurrency(bytes32 cur ...
•    - function removeShortCurrency(bytes32 ...
•    - function getShortRateAt(bytes32 curre ...
•    - function getShortRatesLength(bytes32 ...
•    - function updateShortRates(bytes32 cur ...
•    - function shortRateLastUpdated(bytes32 ...
•    - function getShortRatesAndTime(bytes32 ...

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/**
 *Submitted for verification at Etherscan.io on 2020-12-24
*/

/*
   ____            __   __        __   _
  / __/__ __ ___  / /_ / /  ___  / /_ (_)__ __
 _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ /
/___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\
     /___/

* Synthetix: CollateralManagerState.sol
*
* Latest source (may be newer): https://github.com/Synthetixio/synthetix/blob/master/contracts/CollateralManagerState.sol
* Docs: https://docs.synthetix.io/contracts/CollateralManagerState
*
* Contract Dependencies: 
*	- Owned
*	- State
* Libraries: 
*	- SafeDecimalMath
*	- SafeMath
*
* MIT License
* ===========
*
* Copyright (c) 2020 Synthetix
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/



pragma solidity ^0.5.16;


// https://docs.synthetix.io/contracts/source/contracts/owned
contract Owned {
    address public owner;
    address public nominatedOwner;

    constructor(address _owner) public {
        require(_owner != address(0), "Owner address cannot be 0");
        owner = _owner;
        emit OwnerChanged(address(0), _owner);
    }

    function nominateNewOwner(address _owner) external onlyOwner {
        nominatedOwner = _owner;
        emit OwnerNominated(_owner);
    }

    function acceptOwnership() external {
        require(msg.sender == nominatedOwner, "You must be nominated before you can accept ownership");
        emit OwnerChanged(owner, nominatedOwner);
        owner = nominatedOwner;
        nominatedOwner = address(0);
    }

    modifier onlyOwner {
        _onlyOwner();
        _;
    }

    function _onlyOwner() private view {
        require(msg.sender == owner, "Only the contract owner may perform this action");
    }

    event OwnerNominated(address newOwner);
    event OwnerChanged(address oldOwner, address newOwner);
}


// Inheritance


// https://docs.synthetix.io/contracts/source/contracts/state
contract State is Owned {
    // the address of the contract that can modify variables
    // this can only be changed by the owner of this contract
    address public associatedContract;

    constructor(address _associatedContract) internal {
        // This contract is abstract, and thus cannot be instantiated directly
        require(owner != address(0), "Owner must be set");

        associatedContract = _associatedContract;
        emit AssociatedContractUpdated(_associatedContract);
    }

    /* ========== SETTERS ========== */

    // Change the associated contract to a new address
    function setAssociatedContract(address _associatedContract) external onlyOwner {
        associatedContract = _associatedContract;
        emit AssociatedContractUpdated(_associatedContract);
    }

    /* ========== MODIFIERS ========== */

    modifier onlyAssociatedContract {
        require(msg.sender == associatedContract, "Only the associated contract can perform this action");
        _;
    }

    /* ========== EVENTS ========== */

    event AssociatedContractUpdated(address associatedContract);
}


/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0, "SafeMath: division by zero");
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b != 0, "SafeMath: modulo by zero");
        return a % b;
    }
}


// Libraries


// https://docs.synthetix.io/contracts/source/libraries/safedecimalmath
library SafeDecimalMath {
    using SafeMath for uint;

    /* Number of decimal places in the representations. */
    uint8 public constant decimals = 18;
    uint8 public constant highPrecisionDecimals = 27;

    /* The number representing 1.0. */
    uint public constant UNIT = 10**uint(decimals);

    /* The number representing 1.0 for higher fidelity numbers. */
    uint public constant PRECISE_UNIT = 10**uint(highPrecisionDecimals);
    uint private constant UNIT_TO_HIGH_PRECISION_CONVERSION_FACTOR = 10**uint(highPrecisionDecimals - decimals);

    /**
     * @return Provides an interface to UNIT.
     */
    function unit() external pure returns (uint) {
        return UNIT;
    }

    /**
     * @return Provides an interface to PRECISE_UNIT.
     */
    function preciseUnit() external pure returns (uint) {
        return PRECISE_UNIT;
    }

    /**
     * @return The result of multiplying x and y, interpreting the operands as fixed-point
     * decimals.
     *
     * @dev A unit factor is divided out after the product of x and y is evaluated,
     * so that product must be less than 2**256. As this is an integer division,
     * the internal division always rounds down. This helps save on gas. Rounding
     * is more expensive on gas.
     */
    function multiplyDecimal(uint x, uint y) internal pure returns (uint) {
        /* Divide by UNIT to remove the extra factor introduced by the product. */
        return x.mul(y) / UNIT;
    }

    /**
     * @return The result of safely multiplying x and y, interpreting the operands
     * as fixed-point decimals of the specified precision unit.
     *
     * @dev The operands should be in the form of a the specified unit factor which will be
     * divided out after the product of x and y is evaluated, so that product must be
     * less than 2**256.
     *
     * Unlike multiplyDecimal, this function rounds the result to the nearest increment.
     * Rounding is useful when you need to retain fidelity for small decimal numbers
     * (eg. small fractions or percentages).
     */
    function _multiplyDecimalRound(
        uint x,
        uint y,
        uint precisionUnit
    ) private pure returns (uint) {
        /* Divide by UNIT to remove the extra factor introduced by the product. */
        uint quotientTimesTen = x.mul(y) / (precisionUnit / 10);

        if (quotientTimesTen % 10 >= 5) {
            quotientTimesTen += 10;
        }

        return quotientTimesTen / 10;
    }

    /**
     * @return The result of safely multiplying x and y, interpreting the operands
     * as fixed-point decimals of a precise unit.
     *
     * @dev The operands should be in the precise unit factor which will be
     * divided out after the product of x and y is evaluated, so that product must be
     * less than 2**256.
     *
     * Unlike multiplyDecimal, this function rounds the result to the nearest increment.
     * Rounding is useful when you need to retain fidelity for small decimal numbers
     * (eg. small fractions or percentages).
     */
    function multiplyDecimalRoundPrecise(uint x, uint y) internal pure returns (uint) {
        return _multiplyDecimalRound(x, y, PRECISE_UNIT);
    }

    /**
     * @return The result of safely multiplying x and y, interpreting the operands
     * as fixed-point decimals of a standard unit.
     *
     * @dev The operands should be in the standard unit factor which will be
     * divided out after the product of x and y is evaluated, so that product must be
     * less than 2**256.
     *
     * Unlike multiplyDecimal, this function rounds the result to the nearest increment.
     * Rounding is useful when you need to retain fidelity for small decimal numbers
     * (eg. small fractions or percentages).
     */
    function multiplyDecimalRound(uint x, uint y) internal pure returns (uint) {
        return _multiplyDecimalRound(x, y, UNIT);
    }

    /**
     * @return The result of safely dividing x and y. The return value is a high
     * precision decimal.
     *
     * @dev y is divided after the product of x and the standard precision unit
     * is evaluated, so the product of x and UNIT must be less than 2**256. As
     * this is an integer division, the result is always rounded down.
     * This helps save on gas. Rounding is more expensive on gas.
     */
    function divideDecimal(uint x, uint y) internal pure returns (uint) {
        /* Reintroduce the UNIT factor that will be divided out by y. */
        return x.mul(UNIT).div(y);
    }

    /**
     * @return The result of safely dividing x and y. The return value is as a rounded
     * decimal in the precision unit specified in the parameter.
     *
     * @dev y is divided after the product of x and the specified precision unit
     * is evaluated, so the product of x and the specified precision unit must
     * be less than 2**256. The result is rounded to the nearest increment.
     */
    function _divideDecimalRound(
        uint x,
        uint y,
        uint precisionUnit
    ) private pure returns (uint) {
        uint resultTimesTen = x.mul(precisionUnit * 10).div(y);

        if (resultTimesTen % 10 >= 5) {
            resultTimesTen += 10;
        }

        return resultTimesTen / 10;
    }

    /**
     * @return The result of safely dividing x and y. The return value is as a rounded
     * standard precision decimal.
     *
     * @dev y is divided after the product of x and the standard precision unit
     * is evaluated, so the product of x and the standard precision unit must
     * be less than 2**256. The result is rounded to the nearest increment.
     */
    function divideDecimalRound(uint x, uint y) internal pure returns (uint) {
        return _divideDecimalRound(x, y, UNIT);
    }

    /**
     * @return The result of safely dividing x and y. The return value is as a rounded
     * high precision decimal.
     *
     * @dev y is divided after the product of x and the high precision unit
     * is evaluated, so the product of x and the high precision unit must
     * be less than 2**256. The result is rounded to the nearest increment.
     */
    function divideDecimalRoundPrecise(uint x, uint y) internal pure returns (uint) {
        return _divideDecimalRound(x, y, PRECISE_UNIT);
    }

    /**
     * @dev Convert a standard decimal representation to a high precision one.
     */
    function decimalToPreciseDecimal(uint i) internal pure returns (uint) {
        return i.mul(UNIT_TO_HIGH_PRECISION_CONVERSION_FACTOR);
    }

    /**
     * @dev Convert a high precision decimal to a standard decimal representation.
     */
    function preciseDecimalToDecimal(uint i) internal pure returns (uint) {
        uint quotientTimesTen = i / (UNIT_TO_HIGH_PRECISION_CONVERSION_FACTOR / 10);

        if (quotientTimesTen % 10 >= 5) {
            quotientTimesTen += 10;
        }

        return quotientTimesTen / 10;
    }
}


pragma experimental ABIEncoderV2;

// Inheritance


// Libraries


contract CollateralManagerState is Owned, State {
    using SafeMath for uint;
    using SafeDecimalMath for uint;

    struct Balance {
        uint long;
        uint short;
    }

    uint public totalLoans;

    uint[] public borrowRates;
    uint public borrowRatesLastUpdated;

    mapping(bytes32 => uint[]) public shortRates;
    mapping(bytes32 => uint) public shortRatesLastUpdated;

    // The total amount of long and short for a synth,
    mapping(bytes32 => Balance) public totalIssuedSynths;

    constructor(address _owner, address _associatedContract) public Owned(_owner) State(_associatedContract) {
        borrowRates.push(0);
        borrowRatesLastUpdated = block.timestamp;
    }

    function incrementTotalLoans() external onlyAssociatedContract returns (uint) {
        totalLoans = totalLoans.add(1);
        return totalLoans;
    }

    function long(bytes32 synth) external view onlyAssociatedContract returns (uint) {
        return totalIssuedSynths[synth].long;
    }

    function short(bytes32 synth) external view onlyAssociatedContract returns (uint) {
        return totalIssuedSynths[synth].short;
    }

    function incrementLongs(bytes32 synth, uint256 amount) external onlyAssociatedContract {
        totalIssuedSynths[synth].long = totalIssuedSynths[synth].long.add(amount);
    }

    function decrementLongs(bytes32 synth, uint256 amount) external onlyAssociatedContract {
        totalIssuedSynths[synth].long = totalIssuedSynths[synth].long.sub(amount);
    }

    function incrementShorts(bytes32 synth, uint256 amount) external onlyAssociatedContract {
        totalIssuedSynths[synth].short = totalIssuedSynths[synth].short.add(amount);
    }

    function decrementShorts(bytes32 synth, uint256 amount) external onlyAssociatedContract {
        totalIssuedSynths[synth].short = totalIssuedSynths[synth].short.sub(amount);
    }

    // Borrow rates, one array here for all currencies.

    function getRateAt(uint index) public view returns (uint) {
        return borrowRates[index];
    }

    function getRatesLength() public view returns (uint) {
        return borrowRates.length;
    }

    function updateBorrowRates(uint rate) external onlyAssociatedContract {
        borrowRates.push(rate);
        borrowRatesLastUpdated = block.timestamp;
    }

    function ratesLastUpdated() public view returns (uint) {
        return borrowRatesLastUpdated;
    }

    function getRatesAndTime(uint index)
        external
        view
        returns (
            uint entryRate,
            uint lastRate,
            uint lastUpdated,
            uint newIndex
        )
    {
        newIndex = getRatesLength();
        entryRate = getRateAt(index);
        lastRate = getRateAt(newIndex - 1);
        lastUpdated = ratesLastUpdated();
    }

    // Short rates, one array per currency.

    function addShortCurrency(bytes32 currency) external onlyAssociatedContract {
        if (shortRates[currency].length > 0) {} else {
            shortRates[currency].push(0);
            shortRatesLastUpdated[currency] = block.timestamp;
        }
    }

    function removeShortCurrency(bytes32 currency) external onlyAssociatedContract {
        delete shortRates[currency];
    }

    function getShortRateAt(bytes32 currency, uint index) internal view returns (uint) {
        return shortRates[currency][index];
    }

    function getShortRatesLength(bytes32 currency) public view returns (uint) {
        return shortRates[currency].length;
    }

    function updateShortRates(bytes32 currency, uint rate) external onlyAssociatedContract {
        shortRates[currency].push(rate);
        shortRatesLastUpdated[currency] = block.timestamp;
    }

    function shortRateLastUpdated(bytes32 currency) internal view returns (uint) {
        return shortRatesLastUpdated[currency];
    }

    function getShortRatesAndTime(bytes32 currency, uint index)
        external
        view
        returns (
            uint entryRate,
            uint lastRate,
            uint lastUpdated,
            uint newIndex
        )
    {
        newIndex = getShortRatesLength(currency);
        entryRate = getShortRateAt(currency, index);
        lastRate = getShortRateAt(currency, newIndex - 1);
        lastUpdated = shortRateLastUpdated(currency);
    }
}

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000000000000000000000000de910777c787903f78c89e7a0bf7f4c435cbb1fe000000000000000000000000de910777c787903f78c89e7a0bf7f4c435cbb1fe

-----Decoded View---------------
Arg [0] : _owner (address): 0xDe910777C787903F78C89e7a0bf7F4C435cBB1Fe
Arg [1] : _associatedContract (address): 0xDe910777C787903F78C89e7a0bf7F4C435cBB1Fe

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000de910777c787903f78c89e7a0bf7f4c435cbb1fe
Arg [1] : 000000000000000000000000de910777c787903f78c89e7a0bf7f4c435cbb1fe

SafeDecimalMath : 0x84d626b2bb4d0f064067e4bf80fce7055d8f3e7b