【模板】快读快写

快读

inline int read(){
	int x=0;bool f=1;char s=getchar();
	while(s<'0'||s>'9'){if(s=='-')f=0;s=getchar();}
	while(s>='0'&&s<='9'){x=(x<<1)+(x<<3)+(s^48);s=getchar();}
	return f?x:-x;	
}

inline double fread() {//浮点数
    double x = 0, y = 1.0;
    char c = getchar();
    while (c<'0'||c>'9') {
        if (c == '-') y = -1.0;
        c = getchar();
    }
    while (c>='0'&&c<='9' || c == '.') {
        if (c>='0'&&c<='9') x = x * 10 + c - '0';
        else {
            double t = 0.1;
            c = getchar();
            while (isdigit(c)) {
                x += (c - '0') * t;
                t *= 0.1;
                c = getchar();
            }
            break;
        }
        c = getchar();
    }
    return x * y;
}

快写

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