快读模板 快写模板
inline int read(){
int x=0,f=1;
char ch=getchar();
while(ch<'0'||ch>'9'){
if(ch=='-')
f=-1;
ch=getchar();
}
while(ch>='0'&&ch<='9'){
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');
- return;
- }