@[fxsnbfx](/user/1284636)
`t+=a[i]+b[i];`这一句要改成`t+=(i<a.size()?a[i]:0)+(i<b.size()?b[i]:0);`
by Whycmd @ 2024-02-19 13:27:19
@[fxsnbfx](/user/1284636)
在 `add` 函数开头加上这两句话：
```cpp
if (a.size() < b.size()) a.resize(b.size());
if (b.size() < a.size()) b.resize(a.size());
```
by Link_Cut_Y @ 2024-02-19 13:29:31
@[fxsnbfx](/user/1284636) 你用的是 y 的板子吗？
显然 a,b 数组越界了
by QWQ_123 @ 2024-02-19 13:30:16
```cpp
@[Whycmd](/user/823196)
分成两步解决了，谢谢哥
by fxsnbfx @ 2024-02-19 13:44:58
```cpp
@[Link_Cut_Y](/user/519384)
ok，谢谢哥
by fxsnbfx @ 2024-02-19 13:45:28
```cpp
@[QWQ_123](/user/740328)
报意思，我有一步想当然了
by fxsnbfx @ 2024-02-19 13:46:21
推销一下 [我自己的板子](https://www.luogu.com.cn/paste/xk90la7m)
by 童年的小翼龙 @ 2024-02-19 14:00:52
@[童年的小翼龙](/user/522885) 这位dalao，你认为你的板子有人会用吗？谁敢用啊
by Algorithm_ZRF @ 2024-02-19 16:09:27
@[Algorithm_ZRF](/user/1044048) ？
by 童年的小翼龙 @ 2024-02-19 17:19:35
@[童年的小翼龙](/user/522885) 太长了
by Algorithm_ZRF @ 2024-02-19 17:21:49