Contract Source Code (Solidity Multiple files format)

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pragma solidity 0.4.26;

//Contract for upgrading Meridian Network tokens from MRDN to LOCK

import "./IERC20.sol";
import "./SafeMath.sol";

contract MeridianUpgrade{
  using SafeMath for uint;

  ERC20 public oldToken;
  ERC20 public newToken;
  constructor(address tokenAddr1,address tokenAddr2) public{
    oldToken=ERC20(tokenAddr1);
    newToken=ERC20(tokenAddr2);
  }
  function upgrade(uint amount) public{
    //transfer old tokens
    oldToken.transferFrom(msg.sender,address(this),amount);
    //user recieves tokens at given ratio
    newToken.transfer(msg.sender,amount);
  }
}

interface ERC20 {
  function totalSupply() external view returns (uint256);
  function balanceOf(address who) external view returns (uint256);
  function allowance(address owner, address spender) external view returns (uint256);
  function transfer(address to, uint256 value) external returns (bool);
  function approve(address spender, uint256 value) external returns (bool);
  function approveAndCall(address spender, uint tokens, bytes data) external returns (bool success);
  function transferFrom(address from, address to, uint256 value) external returns (bool);
  function burn(uint256 amount) external;

  event Transfer(address indexed from, address indexed to, uint256 value);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

library SafeMath {
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    if (a == 0) {
      return 0;
    }
    uint256 c = a * b;
    require(c / a == b);
    return c;
  }

  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a / b;
    return c;
  }

  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    require(b <= a);
    return a - b;
  }

  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    require(c >= a);
    return c;
  }

  function ceil(uint256 a, uint256 m) internal pure returns (uint256) {
    uint256 c = add(a,m);
    uint256 d = sub(c,1);
    return mul(div(d,m),m);
  }
}

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[{"constant":false,"inputs":[{"name":"amount","type":"uint256"}],"name":"upgrade","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"oldToken","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"newToken","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"tokenAddr1","type":"address"},{"name":"tokenAddr2","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"}]

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

000000000000000000000000896a07e3788983ec52eaf0f9c6f6e031464ee2cc00000000000000000000000095172ccbe8344fecd73d0a30f54123652981bd6f

-----Decoded View---------------
Arg [0] : tokenAddr1 (address): 0x896a07e3788983ec52eaf0F9C6F6E031464Ee2CC
Arg [1] : tokenAddr2 (address): 0x95172ccBe8344fecD73D0a30F54123652981BD6F

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000896a07e3788983ec52eaf0f9c6f6e031464ee2cc
Arg [1] : 00000000000000000000000095172ccbe8344fecd73d0a30f54123652981bd6f

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bzzr://b5526051faf5795b554c75d7da0871af7e237bf3fe45c7add33dd25045109238