快读快写模板，加速输入输出。

#include <iostream>

using namespace std;

template<class T>
inline void read(T &val) {
    T x = 0, f = 1;char c = getchar();
    while (c < '0' || c>'9') { if (c == '-') f = -1;c = getchar(); }///整数符号
    while (c >= '0' && c <= '9') { x = (x << 3) + (x << 1) + (c ^ 48);c = getchar(); }///挪位加数
    val = x * f;
}

template<class T>
inline void write(T x) {
    if (x < 0) { putchar('-');x = -x; }
    if (x >= 10) write(x / 10);
    putchar(x % 10 + '0');
}

int main() {
    __int128 n;
    read(n);
    write(n);
}