代码如下👇

#include <cstdio>
#include <iostream>
using namespace std;
inline int read()
{
    char ch;
    int x=0;int sign=1;
    do{
        ch=getchar();
        if(ch=='-')        sign=-1;
    }while(ch>'9'||ch<'0');
    while('0'<=ch&&ch<='9'){
        x=x*10+(ch-'0');
        ch=getchar();
    }
    return x*sign;
}
template <typename T> 
inline T read_Tp(T& x)
{
    char ch;x=0;
    int sign=1;
    do{
        ch=getchar();
        if(ch=='-')        sign=-1;
    }while(ch>'9'||ch<'0');
    while('0'<=ch&&ch<='9'){
        x=x*10+(ch-'0');
        ch=getchar();
    }
    x*=sign;
}
int main()
{
    int a;
    a=read_Tp(a);
    cout<<a<<endl;
}