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/**
 *Submitted for verification at Etherscan.io on 2020-09-16
*/

/**
 *Submitted for verification at Etherscan.io on 2020-09-15
*/

pragma solidity ^0.5.16;
pragma experimental ABIEncoderV2;

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pragma solidity ^0.5.0;

contract DSMath {
    function add(uint x, uint y) internal pure returns (uint z) {
        require((z = x + y) >= x, "ds-math-add-overflow");
    }
    function sub(uint x, uint y) internal pure returns (uint z) {
        require((z = x - y) <= x, "ds-math-sub-underflow");
    }
    function mul(uint x, uint y) internal pure returns (uint z) {

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// Dependency file: @openzeppelin/contracts/GSN/Context.sol

// SPDX-License-Identifier: MIT

// pragma solidity ^0.6.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct

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// Dependency file: contracts/interfaces/IERC20.sol

// SPDX-License-Identifier: MIT

// pragma solidity ^0.6.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {

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/*
 ___    ___ ________  ________     
 |\  \  /  /|\_____  \|\   ___ \    
 \ \  \/  / \|____|\ /\ \  \_|\ \   
  \ \    / /      \|\  \ \  \ \\ \  
   \/  /  /      __\_\  \ \  \_\\ \ 
 __/  / /       |\_______\ \_______\
|\___/ /        \|_______|\|_______|
\|___|/                             
                                    */

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pragma solidity ^0.5.0;
import './y3dPool.sol';
import './y3dToken.sol';

interface IUniswapV2Factory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

contract y3dFactory {
    y3dToken public y3d;

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/* &*#()&*#)&E*F& */

#include <iostream>
#include <cstdio>
#include <cstring>
#include <ctime>
#include <cmath>
#include <algorithm>
#include <sstream>
#include <string>

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/**
 * @param {string} word1
 * @param {string} word2
 * @return {number}
 */
let minDistance = function(word1, word2) {
   let a = word1.split("")
   let b = word2.split("")
   let n = a.length
   let m = b.length

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// https://paste.ubuntu.com/p/g7hk9rjTkc
#include<bits/stdc++.h>
#define mset(a,b) memset(a,b,sizeof(a))
using namespace std;
const int N=2e3+50;
long long  xx[N],yy[N];
//long long  qx[N],qy[N];
long long  res[N];
struct Point //向量,但是主要判断方向与自己平行的多少个
{