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/**
 *Submitted for verification at Etherscan.io on 2021-07-22
*/

library IterableMapping {
  struct itmap
  {
    mapping(address => IndexValue) data;
    KeyFlag[] keys;
    uint size;
  }
  struct IndexValue { uint keyIndex; uint value; }
  struct KeyFlag { address key; bool deleted; }
  function insert(itmap storage self, address key, uint value) public returns (bool replaced)
  {
    uint keyIndex = self.data[key].keyIndex;
    self.data[key].value = value;
    if (keyIndex > 0)
      return true;
    else
    {
      keyIndex = self.keys.length++;
      self.data[key].keyIndex = keyIndex + 1;
      self.keys[keyIndex].key = key;
      self.size++;
      return false;
    }
  }
  function remove(itmap storage self, address key) public returns (bool success)
  {
    uint keyIndex = self.data[key].keyIndex;
    if (keyIndex == 0)
      return false;
    delete self.data[key];
    self.keys[keyIndex - 1].deleted = true;
    self.size --;
  }
  function contains(itmap storage self, address key) public view returns (bool)
  {
    return self.data[key].keyIndex > 0;
  }
  function iterate_start(itmap storage self) public view returns (uint keyIndex)
  {
    return iterate_next(self, uint(-1));
  }
  function iterate_valid(itmap storage self, uint keyIndex) public view returns (bool)
  {
    return keyIndex < self.keys.length;
  }
  function iterate_next(itmap storage self, uint keyIndex) public view returns (uint r_keyIndex)
  {
    keyIndex++;
    while (keyIndex < self.keys.length && self.keys[keyIndex].deleted)
      keyIndex++;
    return keyIndex;
  }
  function iterate_get(itmap storage self, uint keyIndex) public view returns (address key, uint value)
  {
    key = self.keys[keyIndex].key;
    value = self.data[key].value;
  }
  function iterate_getValue(itmap storage self, address key) public view returns (uint value) {
      return self.data[key].value;
  }
}

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[{"constant":false,"inputs":[{"name":"self","type":"IterableMapping.itmap storage"},{"name":"key","type":"address"}],"name":"remove","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"self","type":"IterableMapping.itmap storage"},{"name":"key","type":"address"}],"name":"iterate_getValue","outputs":[{"name":"value","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"self","type":"IterableMapping.itmap storage"},{"name":"key","type":"address"}],"name":"contains","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"self","type":"IterableMapping.itmap storage"},{"name":"keyIndex","type":"uint256"}],"name":"iterate_get","outputs":[{"name":"key","type":"address"},{"name":"value","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"self","type":"IterableMapping.itmap storage"},{"name":"keyIndex","type":"uint256"}],"name":"iterate_next","outputs":[{"name":"r_keyIndex","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"self","type":"IterableMapping.itmap storage"}],"name":"iterate_start","outputs":[{"name":"keyIndex","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"self","type":"IterableMapping.itmap storage"},{"name":"key","type":"address"},{"name":"value","type":"uint256"}],"name":"insert","outputs":[{"name":"replaced","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"self","type":"IterableMapping.itmap storage"},{"name":"keyIndex","type":"uint256"}],"name":"iterate_valid","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"}]

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bzzr://a93e261e2b32e04e09ac07e09d1e2076eedee69fc7a383ac19665196bf248785