#include<bits/stdc++.h>
inline int read()
{
int s=0,f=1;
char ch=getchar();
while(!isdigit(ch))//等价于while(!(ch>='0' && ch<='9'))
{
if(ch=='-') f=-1;
ch=getchar();
}
while(isdigit(ch))//等价于while(ch>='0' && ch<='9')
{
s=s*10+ch-'0';
ch=getchar();
}
return s*f;
}
using namespace std;
int main()
{
int n;
n=read();
cout<<n;
return 0;
}
C ++ Templates: Quick read
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Origin www.cnblogs.com/SuperTer/p/CPP-model-1.html
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