读入、输出优化

关闭同步

ios::sync_with_stdio(false), cin.tie(0);
//cin和cout 不能和其他的scanf,printf,puts,sscanf,sprintf,getchar等混用

整形

读入

template <typename T> inline T read()
{
    T sum = 0, fl = 1;
    int ch = getchar();
    for (; !isdigit(ch); ch = getchar())
        if (ch == '-')
            fl = -1;
    for (; isdigit(ch); ch = getchar())
        sum = sum * 10 + ch - '0';
    return sum * fl;
}

//a=read<int>();

输出

template <typename T> inline void write(T x)
{
    if (x < 0)
        putchar('-'), x *= -1;
    if (x > 9)
        write(x / 10);
    putchar(x % 10 | '0');
}

//write(a);