/**
 *Submitted for verification at Etherscan.io on 2022-02-28
*/

pragma solidity ^0.4.24;
	

	// ----------------------------------------------------------------------------
	// Sample token contract
	//
	// Symbol        : PRE
	// Name          : MetaSpace
	// Total supply  : 1600000000000000
	// Decimals      : 5
	// Owner Account : 0x272713eB5aBa9625d4F7a36a268E9568F8e13033
	//
	// Enjoy.
	//
	// (c) by naor 2021
	// ----------------------------------------------------------------------------
	

	

	// ----------------------------------------------------------------------------
	// Lib: Safe Math
	// ----------------------------------------------------------------------------
	contract SafeMath {
	

	    function safeAdd(uint a, uint b) public pure returns (uint c) {
	        c = a + b;
	        require(c >= a);
	    }
	

	    function safeSub(uint a, uint b) public pure returns (uint c) {
	        require(b <= a);
	        c = a - b;
	    }
	

	    function safeMul(uint a, uint b) public pure returns (uint c) {
	        c = a * b;
	        require(a == 0 || c / a == b);
	    }
	

	    function safeDiv(uint a, uint b) public pure returns (uint c) {
	        require(b > 0);
	        c = a / b;
	    }
	}
	

	

	/**
	ERC Token Standard #20 Interface
	https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
	*/
	contract ERC20Interface {
	    function totalSupply() public constant returns (uint);
	    function balanceOf(address tokenOwner) public constant returns (uint balance);
	    function allowance(address tokenOwner, address spender) public constant returns (uint remaining);
	    function transfer(address to, uint tokens) public returns (bool success);
	    function approve(address spender, uint tokens) public returns (bool success);
	    function transferFrom(address from, address to, uint tokens) public returns (bool success);
	

	    event Transfer(address indexed from, address indexed to, uint tokens);
	    event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
	}
	

	

	/**
	Contract function to receive approval and execute function in one call
	
	Borrowed from MiniMeToken
	*/
	contract ApproveAndCallFallBack {
	    function receiveApproval(address from, uint256 tokens, address token, bytes data) public;
	}
	

	/**
	ERC20 Token, with the addition of symbol, name and decimals and assisted token transfers
	*/
	contract PRE is ERC20Interface, SafeMath {
	    string public symbol;
	    string public  name;
	    uint8 public decimals;
	    uint public _totalSupply;
	

	    mapping(address => uint) balances;
	    mapping(address => mapping(address => uint)) allowed;
	

	

	    // ------------------------------------------------------------------------
	    // Constructor
	    // ------------------------------------------------------------------------
	    constructor() public {
	        symbol = " PRE";
	        name = " MetaSpace";
	        decimals = 5;
	        _totalSupply = 1600000000000000;
	        balances[0x272713eB5aBa9625d4F7a36a268E9568F8e13033] = _totalSupply;
	        emit Transfer(address(0), 0x272713eB5aBa9625d4F7a36a268E9568F8e13033, _totalSupply);
	    }
	

	

	    // ------------------------------------------------------------------------
	    // Total supply
	    // ------------------------------------------------------------------------
	    function totalSupply() public constant returns (uint) {
	        return _totalSupply  - balances[address(0)];
	    }
	

	

	    // ------------------------------------------------------------------------
	    // Get the token balance for account tokenOwner
	    // ------------------------------------------------------------------------
	    function balanceOf(address tokenOwner) public constant returns (uint balance) {
	        return balances[tokenOwner];
	    }
	

	

	    // ------------------------------------------------------------------------
	    // Transfer the balance from token owner's account to to account
	    // - Owner's account must have sufficient balance to transfer
	    // - 0 value transfers are allowed
	    // ------------------------------------------------------------------------
	    function transfer(address to, uint tokens) public returns (bool success) {
	        balances[msg.sender] = safeSub(balances[msg.sender], tokens);
	        balances[to] = safeAdd(balances[to], tokens);
	        emit Transfer(msg.sender, to, tokens);
	        return true;
	    }
	

	

	    // ------------------------------------------------------------------------
	    // Token owner can approve for spender to transferFrom(...) tokens
	    // from the token owner's account
	    //
	    // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
	    // recommends that there are no checks for the approval double-spend attack
	    // as this should be implemented in user interfaces 
	    // ------------------------------------------------------------------------
	    function approve(address spender, uint tokens) public returns (bool success) {
	        allowed[msg.sender][spender] = tokens;
	        emit Approval(msg.sender, spender, tokens);
	        return true;
	    }
	

	

	    // ------------------------------------------------------------------------
	    // Transfer tokens from the from account to the to account
	    // 
	    // The calling account must already have sufficient tokens approve(...)-d
	    // for spending from the from account and
	    // - From account must have sufficient balance to transfer
	    // - Spender must have sufficient allowance to transfer
	    // - 0 value transfers are allowed
	    // ------------------------------------------------------------------------
	    function transferFrom(address from, address to, uint tokens) public returns (bool success) {
	        balances[from] = safeSub(balances[from], tokens);
	        allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
	        balances[to] = safeAdd(balances[to], tokens);
	        emit Transfer(from, to, tokens);
	        return true;
	    }
	

	

	    // ------------------------------------------------------------------------
	    // Returns the amount of tokens approved by the owner that can be
	    // transferred to the spender's account
	    // ------------------------------------------------------------------------
	    function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
	        return allowed[tokenOwner][spender];
	    }
	

	

	    // ------------------------------------------------------------------------
	    // Token owner can approve for spender to transferFrom(...) tokens
	    // from the token owner's account. The spender contract function
	    // receiveApproval(...) is then executed
	    // ------------------------------------------------------------------------
	    function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
	        allowed[msg.sender][spender] = tokens;
	        emit Approval(msg.sender, spender, tokens);
	        ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
	        return true;
	    }
	

	

	    // ------------------------------------------------------------------------
	    // Don't accept ETH
	    // ------------------------------------------------------------------------
	    function () public payable {
	        revert();
	    }
	}