class Bank {
public:
    vector<long long>balance;
    int maxID,minID;
    Bank(vector<long long>& _balance) {
        balance.push_back(0);
        for(auto x:_balance)    balance.push_back(x);
        minID=1;
        maxID=balance.size()-1;
    }
    bool check(int id){
        return  id>=minID && id<=maxID;
    }
    bool transfer(int account1, int account2, long long money) {
        if( !check(account1) || !check(account2) )  return false;
        if(balance[account1]>=money){
            balance[account1]-=money;
            balance[account2]+=money;
            return true;
        }
        return false;
    }
    
    bool deposit(int account, long long money) {
        if( !check(account) )  return false;
        balance[account]+=money;
        return true;
    }
    
    bool withdraw(int account, long long money) {
        if( !check(account) )  return false;
        if(balance[account]>=money){
            balance[account]-=money;
            return true;
        }
        return false;
    }
};

/**
 * Your Bank object will be instantiated and called as such:
 * Bank* obj = new Bank(balance);
 * bool param_1 = obj->transfer(account1,account2,money);
 * bool param_2 = obj->deposit(account,money);
 * bool param_3 = obj->withdraw(account,money);
 */