#include<bits/stdc++.h>

using namespace std;

#ifndef BADGNU

#pragma GCC target("sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")

#endif

#pragma GCC optimize("Ofast,unroll-loops,fast-math,O3")

#include <ext/pb_ds/assoc_container.hpp>

#include <ext/pb_ds/tree_policy.hpp> 

#define ll long long

#define int ll

#define ld long double

#define y1 cheza

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int N=1e5+100;

const int M=5001;

const int B=447;

const int mod=998244353;

const ll INF=1e18;

const int dx[]={1,-1,0,0};

const int dy[]={0,0,1,-1};

const double eps=1e-6;

int a,b;

ostream& operator<<(ostream& dest, __int128_t value){

    ostream::sentry s(dest);

    if (s) {

        __uint128_t tmp = value < 0 ? -value : value;

        char buffer[ 128 ];

        char* d = end( buffer );

        do{

            --d;

            *d="0123456789"[ tmp % 10 ];

            tmp /= 10;

        } while ( tmp != 0 );

        if ( value < 0 ) {

            -- d;

            *d = '-';

        }

        int len = end( buffer ) - d;

        if ( dest.rdbuf()->sputn( d, len ) != len ) {

            dest.setstate( ios_base::badbit );

        }

    }

    return dest;

}

void test(){

    cin>>a>>b;

    __int128_t x=__int128_t(a)*__int128_t(b);

    cout<<x;

}

​

​

​

/*

​

*/

signed main(){

    ios_base::sync_with_stdio(false);

    cin.tie(nullptr);

    // cout.tie(nullptr);

    int t2=1;

    // cin>>t2;

    for(int i=1;i<=t2;i++){

        test();

    }

}