currency

pragma solidity ^0.4.0;
contract SimpleStorage{
    uint a;
    uint shop_1=0;
    uint shop_2=0;
    function initial( uint balu)public{
        a = balu;
    }
     function Shop1( uint balu)public{
        a = a-balu;
        shop_1=shop_1+balu;
    }
     function Shop2(uint balu)public{
          a = a-balu;
          shop_2=shop_2+balu;
    }
   
     function add(uint balu)public{
          a = a+balu;
    }
    function balance()public constant returns(uint){
        return a;
    }
     function shop_1balance()public constant returns(uint){
        return shop_1;
    } function shop_2balance()public constant returns(uint){
        return shop_2;
    }
   
}