#include <iostream>
using namespace std;
typedef long long LL;
int main(int argc, char* argv[])
{
	LL A;
	LL B;
	cin>>A>>B;
	LL C=A*B;

	int Anum=0;
	int Bnum=0;
	if (A<0){
		A=-A;
	}
	if (B<0){
		B=-B;
	}
	if (A<=9 && B<=9){
		cout<<C<<endl;
		return 0;
	}
	while (A%10==0){
		A/=10;
		Anum++;
	}
	while (B%10==0){
		B/=10;
		Bnum++;
	}
	if (A<10 && B<10 && Anum>=2 &&Bnum>=2){
		cout<<C/10<<endl;
		return 0;
	}
	if (C>=-99999999 && C<=99999999){
		cout<<C<<endl;
		return 0;
	}

	cout<<"E"<<endl;
	return 0;
}