fread
char buf[1<<20],*p1,*p2;
inline char gc()
{
return p1==p2&&(p2=(p1=buf)+fread(buf,1,1<<20,stdin))==p1?0:*p1++;
}
输入
template<typename T>
inline void read(T &x)
{
char tt;
bool flag=0;
while(!isdigit(tt=gc())&&tt!='-');
tt=='-'?(flag=1,x=0):(x=tt-'0');
while(isdigit(tt=gc())) x=(x<<1)+(x<<3)+(tt^'0');
if(flag) x=-x;
}
输出
char pbuf[1<<20],*pp=pbuf;
inline void push(const char c)
{
if(pp-pbuf==(1<<20)) fwrite(pbuf,1,(1<<20),stdout),pp=pbuf;
*pp++=c;
}
template<typename T>
inline void write(T x)
{
static int sta[35];
int top=0;
if(x<0) push('-'),x=-x;
do {
sta[top++]=x,x/=10;
} while(x);
while(top) push(sta[--top]+'0');
push('\n');
}
fwrite(pbuf,1,pp-pbuf,stdout);
转载于:https://www.cnblogs.com/KatouKatou/p/9521125.html
