关于快速读入

#include<iostream>
using namespace std;
inline int read(){
	int t=0,f=1;
	char a=getchar();
	while(a<48||a>57){
		if(a=='-') f=-1;
		a=getchar();
	}
	while(a<=57&&a>=48){
		t=t*10+a-48;
		a=getchar();
	}
	return t*f;
}
inline void write(int x){
	int f[100],cnt=0; 
	if(x<0) putchar('-'),x=-x;
	while(x){
		f[++cnt]=x%10;
		x/=10;
	}
	for(int i=cnt;i>=1;i--){
		putchar(f[i]+48);
	}
}
signed main(){
	int n;
	int ans=0;
	register int c;
	n=read();
	for(register int i=1;i<=n;++i){
		c=read();
		ans+=c;
	}
	write(ans);
	return 0;
}

inline void write(int x){
	if(x<0) putchar('-'),x=-x;
	if(x>9) write(x/10);
	putchar(x%10+48);
}