。。。。。
by dlydly @ 2018-12-01 23:11:22
可以用函数啊
by dlydly @ 2018-12-01 23:11:40
```
bool prime(int x)
{
int q=sqrt(x+0.5);
if(x == 1)
return 0;
for(int i = 2; i <= q; i ++)
if(x % i == 0)
return 0;
return true;
}
```
by dlydly @ 2018-12-01 23:15:08
~~不会······~~
by KasuganoSora @ 2018-12-05 21:18:18