尝试卡常：使用scanf or 快读
by __My0217__ @ 2023-04-16 15:34:12
快读
我给下快读模板
```
inline int read()
{
int x = 0, f = 1;
char ch = getchar();
while(ch < '0' || ch > '9')
{
if(ch == '-')
f = -1;
ch = getchar();
}
while(ch >= '0' && ch <= '9')
x = x * 10 + ch - '0', ch = getchar();
return x*f;
}
```
然后就把cin >> a;
改为a = read()；就行
by ccg12345 @ 2023-04-16 15:39:48
快读&&scanf都试过了，没有改变结果
by weixizhao1111 @ 2023-04-16 15:46:15
加register和inline
by ACtheQ @ 2023-06-09 19:40:30