Chronos Exchange Audit

```solidity=171 require(totalSupply()+ MAX_RESERVE + amount <= MAX_SUPPLY, "Mint would exceed max supply."); ``` The `totalSupply()` function returns the total amount of NFTs, including both minted reserved NFTs and minted sold NFTs. The `MAX_RESERVE` variable represents the maximum amount of reserved NFTs that can be minted. However, adding the result of `totalSupply()` to `MAX_RESERVE` would result in double-counting the minted reserved NFTs. As a result, the `mint()` function will revert before the maximum supply of NFTs is reached. Furthermore, the formula for token ID calculation has the same issue, the calculated token ID is larger than expected.