#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;
	if (A<=9 && B<=9){
		cout<<C<<endl;
		return 0;
	}

	char a1[100],b1[100];
	if (A<0){
		A=-A;
	}
	if (B<0){
		B=-B;
	}
	sprintf(a1,"%ld",A);
	sprintf(b1,"%ld",B);
	if (a1[1]=='0' && b1[1]=='0'){
		cout<<C/10<<endl;
		return 0;
	}else if (a1[1]=='0' && b1[1]=='\0' || a1[1]=='\0' && b1[1]=='0'){
		cout<<C/10<<endl;
		return 0;
	}

	if (C>=-99999999 && C<=99999999){
		cout<<C<<endl;
		return 0;
	}

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