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Contract Source Code (Vyper language format)

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# pragma version 0.3.10
# pragma evm-version cancun

interface ERC20:
    def approve(_to: address, _value: uint256): nonpayable
    def transfer(_to: address, _value: uint256) -> bool: nonpayable
    def transferFrom(_from: address, _to: address, _value: uint256) -> bool: nonpayable
    def balanceOf(_owner: address) -> uint256: view
    def decimals() -> uint256: view

interface StableSwap:
    def get_p(i: uint256=0) -> uint256: view
    def price_oracle(i: uint256=0) -> uint256: view
    def get_balances() -> uint256[2]: view
    def exchange(i: int128, j: int128, _dx: uint256, _min_dy: uint256, _receiver: address = msg.sender) -> uint256: nonpayable
    def A_precise() -> uint256: view
    def fee() -> uint256: view
    def coins(i: uint256) -> ERC20: view

interface Regulator:
    def price_deviation() -> uint256: view

interface PegKeeper:
    def pool() -> StableSwap: view
    def IS_INVERSE() -> bool: view
    def update(_receiver: address = msg.sender) -> uint256: nonpayable

interface Morpho:
    def flashLoan(token: address, assets: uint256, data: Bytes[256]):nonpayable

struct Params:
    balances: uint256[2]
    decimals: uint256[2]
    p_o: uint256
    cur_p: uint256
    A: uint256
    fee: uint256
    is_inverse: bool

struct SandwichParams:
    amount: uint256
    i: int128
    pk: PegKeeper
    pool: StableSwap
    coin: ERC20
    receiver: address

REGULATOR: immutable(Regulator)
MORPHO: immutable(Morpho)

sandwich_params: transient(SandwichParams)

@external
def __init__(_regulator: Regulator, _morpho: Morpho, _pools: StableSwap[4]):
    REGULATOR = _regulator
    MORPHO = _morpho

    for pool in _pools:
        for i in range(2):
            pool.coins(i).approve(pool.address, max_value(uint256))


@view
@external
def get_params(pk: PegKeeper) -> Params:
    pool: StableSwap = pk.pool()
    cur_p: uint256 = 0
    success: bool = False
    success = raw_call(
        pool.address, method_id("get_p()"),
        revert_on_failure=False,
        is_static_call=True,
    )
    if success:
        cur_p = pool.get_p()
    else:
        cur_p = pool.get_p(0)
    return Params({
        balances: pool.get_balances(),
        decimals: [pool.coins(0).decimals(), pool.coins(1).decimals()],
        p_o: pool.price_oracle(),
        cur_p: cur_p,
        A: pool.A_precise(),
        fee: pool.fee(),
        is_inverse: pk.IS_INVERSE()
    })


@external
def call(pk: PegKeeper, amount: uint256, i: int128, _receiver: address=msg.sender):
    if amount > 0:
        pool: StableSwap = pk.pool()
        coin: ERC20 = pool.coins(convert(i, uint256))
        self.sandwich_params = SandwichParams({
            amount: amount,
            i: i,
            pk: pk,
            pool: pool,
            coin: coin,
            receiver: _receiver,
        })
        MORPHO.flashLoan(coin.address, amount, b"")
        coin.transfer(_receiver, coin.balanceOf(self))
        return

    pk.update(_receiver)


@external
def onMorphoFlashLoan(assets: uint256, data: Bytes[256]):
    sp: SandwichParams = self.sandwich_params
    dy: uint256 = sp.pool.exchange(sp.i, 1-sp.i, sp.amount, 0)

    sp.pk.update(sp.receiver)

    sp.pool.exchange(1-sp.i, sp.i, dy, 0)

    sp.coin.approve(msg.sender, assets)


@external
def approve(_pool: StableSwap):
    _pool.coins(0).approve(_pool.address, max_value(uint256))
    _pool.coins(1).approve(_pool.address, max_value(uint256))

• No Contract Security Audit Submitted- Submit Audit Here

[{"stateMutability":"nonpayable","type":"constructor","inputs":[{"name":"_regulator","type":"address"},{"name":"_morpho","type":"address"},{"name":"_pools","type":"address[4]"}],"outputs":[]},{"stateMutability":"view","type":"function","name":"get_params","inputs":[{"name":"pk","type":"address"}],"outputs":[{"name":"","type":"tuple","components":[{"name":"balances","type":"uint256[2]"},{"name":"decimals","type":"uint256[2]"},{"name":"p_o","type":"uint256"},{"name":"cur_p","type":"uint256"},{"name":"A","type":"uint256"},{"name":"fee","type":"uint256"},{"name":"is_inverse","type":"bool"}]}]},{"stateMutability":"nonpayable","type":"function","name":"call","inputs":[{"name":"pk","type":"address"},{"name":"amount","type":"uint256"},{"name":"i","type":"int128"}],"outputs":[]},{"stateMutability":"nonpayable","type":"function","name":"call","inputs":[{"name":"pk","type":"address"},{"name":"amount","type":"uint256"},{"name":"i","type":"int128"},{"name":"_receiver","type":"address"}],"outputs":[]},{"stateMutability":"nonpayable","type":"function","name":"onMorphoFlashLoan","inputs":[{"name":"assets","type":"uint256"},{"name":"data","type":"bytes"}],"outputs":[]},{"stateMutability":"nonpayable","type":"function","name":"approve","inputs":[{"name":"_pool","type":"address"}],"outputs":[]}]

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

00000000000000000000000036a04caffc681fa179558b2aaba30395cddd855f000000000000000000000000bbbbbbbbbb9cc5e90e3b3af64bdaf62c37eeffcb000000000000000000000000390f3595bca2df7d23783dfd126427cceb997bf40000000000000000000000004dece678ceceb27446b35c672dc7d61f30bad69e000000000000000000000000625e92624bc2d88619accc1788365a69767f620000000000000000000000000034d655069f4cac1547e4c8ca284ffff5ad4a8db0

-----Decoded View---------------
Arg [0] : _regulator (address): 0x36a04CAffc681fa179558B2Aaba30395CDdd855f
Arg [1] : _morpho (address): 0xBBBBBbbBBb9cC5e90e3b3Af64bdAF62C37EEFFCb
Arg [2] : _pools (address[4]): 0x390f3595bCa2Df7d23783dFd126427CCeb997BF4,0x4DEcE678ceceb27446b35C672dC7d61F30bAD69E,0x625E92624Bc2D88619ACCc1788365A69767f6200,0x34D655069F4cAc1547E4C8cA284FfFF5ad4A8db0

-----Encoded View---------------
6 Constructor Arguments found :
Arg [0] : 00000000000000000000000036a04caffc681fa179558b2aaba30395cddd855f
Arg [1] : 000000000000000000000000bbbbbbbbbb9cc5e90e3b3af64bdaf62c37eeffcb
Arg [2] : 000000000000000000000000390f3595bca2df7d23783dfd126427cceb997bf4
Arg [3] : 0000000000000000000000004dece678ceceb27446b35c672dc7d61f30bad69e
Arg [4] : 000000000000000000000000625e92624bc2d88619accc1788365a69767f6200
Arg [5] : 00000000000000000000000034d655069f4cac1547e4c8ca284ffff5ad4a8db0