摘要:
```#include#include#include #includeusing namespace std;#define int long longtypedef long long ll;const int N=200;int read(){ int res=0,ch,flag=0; if((ch=getchar())=='-') //判断正负 ... 阅读全文
摘要:
参考秦大佬的题解: https://www.acwing.com/solution/AcWing/content/1730/ 阅读全文