#include
#include
#include
#include
#include
#include
using namespace std ;
typedef long long llong ;
const int size = 50000 ;
const int base = 10000 ; //高精度數字中每乙個元素表示數字的幾位，100就是2位。1000就是4位。
const int cap = 50000 ;
struct bignum
bignum( int x ):len(0)
bignum( const bignum &x ):len(x.len)
int &operator( int posi )
int operator( int posi )const
};int cmp( const bignum &a, const bignum &b ) //比較 兩個高精度數的大小 1是a大，-1是b大 0是相等。
bignum operator+( const bignum &a, const bignum &b )
r.len = i ; return r ;
}bignum operator-( const bignum &a, const bignum &b )
//高精度乘單精度，單精度必須放在右邊
bignum operator*( const bignum &a, const int &b )
r.len = a.len ; while( r.len>0&&0==r[r.len-1] ) r.len-- ;//消除字首0
return r ;
}llong mod( const bignum &a, const int &b )
carry = carry + a[i] ; carry = carry % b ;
return carry ;
}istream &operator>>( istream &in, bignum &x )
return in ;
}ostream &operator<<( ostream &out, const bignum &x )
void mytostr( string &str, const bignum &x )
for( int i=x.len-2; i>=0; i-- )
for( int j=base/10; j>0; j/=10 )
str += char(x[i]/j%10+'0') ;
str.reserve() ;
}int main()
{bignum a,b,c;
cin>>a;
cin>>b;
c=a*b;
cout<
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