#include<iostream>
#include<algorithm>
#include<string>
std::istream& operator>> (std::istream& inp, __int128& n) {
    std::string num;
    inp >> num ;
    n=0;
    bool negative=false;
    for (auto c : num) {
        n*=10;
        if (c=='-') negative=true;
        else n+=(c-'0');
    }
    if (negative==true) n*=(-1);
    return inp;
}
std::ostream& operator<< (std::ostream& out, __int128& n) {
    std::string digs="";
    bool negative=false;
    if (n<0) {
        negative=true;
        n*=(-1);
    }
    for (;;) {
        digs+=(n%10+'0');
        n/=10;
        if (n==0) break;
    }
    reverse(digs.begin(),digs.end());
    if (negative==true) out << "-";
    out << digs ;
    return out;
}
int main () {
    __int128 a,b;
    std::cin >> a >> b ;
    std::cout << std::endl ;
    return 0;
}