快读快写模板

template <typename T>
void read(T &x)
{
    x = 0;
    int f = 1;
    char c = getchar();
    while(!isdigit(c)) {if(c == '-') f = -1; c = getchar();}
    while(isdigit(c)) x = x * 10 + c - '0', c = getchar();
    x *= f;
    return;
}

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

$$A\ drop\ of\ tear\ blurs\ memories\ of\ the\ past.$$