快读快写
Varuxn
2019-12-10 18:33:28
```
#include<bits/stdc++.h>
using namespace std;
inline int read()
{
int x=0,f=1;
char ch=getchar();
while(!isdigit(ch))
{
if(ch=='-')
f=-1;
ch=getchar();
}
while(isdigit(ch))
{
x=(x<<1)+(x<<3)+(ch^48);
ch=getchar();
}
return x*f;
}
void write(int x)
{
if(x<0) putchar('-'),x=-x;
if(x>9) write(x/10);
putchar(x%10+'0');
}
int main()
{
int n;
n=read();
write(n);
return 0;
}
```