# Hint finance
![image.png](https://img.learnblockchain.cn/attachments/2022/09/ERPBhNin6319ba2d98c3f.png)
## 题目要求
```js
function isSolved() public view returns (bool) {
for (uint256 i = 0; i < underlyingTokens.length; ++i) {
address vault = hintFinanceFactory.un...