@[离散小波变换°](/user/68344)
by CEFqwq @ 2023-09-09 15:49:01
@[tlxjy](/user/482610) 本来就是黄啊？
by Genius_Star @ 2023-09-09 15:51:11
@[tlxjy](/user/482610) 不长啊
by _frog @ 2023-09-09 15:53:27
```cpp
string work(ll x) {
if(x==1)return "2(0)";
if(x==2)return "2";
if(x==0)return "";
if(lg2[x])return "2("+work(lg2[x])+")";
string k = "";
ll i = 1;
while (x > 0) {
if (x % 2)k = work(i) + "+" + k;
i*=2;
x /= 2;
}
k.erase(k.length() - 1, k.length());
return k;
}
```
by _frog @ 2023-09-09 15:53:57
@[tlxjy](/user/482610) 一个二进制拆分+递归很难吗？普及-很合理
by Frosts @ 2023-09-09 15:54:18
@[tlxjy](/user/482610) 合理怀疑是想多切一道黄题（
by zct_sky @ 2023-09-09 15:56:35
@[Genius_Star](/user/979266) 这不是橙吗
by Special_Tony @ 2023-09-09 15:56:54
@[_frog](/user/423140) 发现frog!
by Special_Tony @ 2023-09-09 15:57:19
@[zct_sky](/user/519734) 还有sky
by Special_Tony @ 2023-09-09 15:57:44
@[Genius_Star](/user/979266) 这是橙的
by ZYK_beishetianlang @ 2023-09-09 16:03:56