#include <stdio.h>
#include <algorithm>
#include <iostream>
#include <string>
#include <vector>
#include <functional>
#include <map>
#include <iomanip>
#include <math.h> 
#include <stack>
#include <queue>
#include <bitset>
#include <cstdlib>
#include <tuple>
#include <cctype>
#include <ctype.h>
#include <set>
#include <sstream>

using namespace std;



int main(){
	int i, j, k;
	long long a, b;


	cin >> a >> b;

	long long a2 = a, b2 = b;

	while (true) {
		if (a2 % 10 == 0) { a2 /= 10; }
		else {
			break;
		}
	}

	while (true) {
		if (b2 % 10 == 0) { b2 /= 10; }
		else {
			break;
		}
	}

	if (a2>=1 && a2<=9 && b2 >= 1 && b2 <= 9 && (a % 100 == 0 && b % 100 == 0)) {
		cout << a*b / 10 << endl;

	}
	else {

		long long num = a * b;

		if (num >= 0) {

			if (to_string(num).length() >= 9) {
				cout << "E" << endl;
			}
			else {
				cout << num << endl;
			}
		}
		else {
			if (to_string(num).length() >= 10) {
				cout << "E" << endl;
			}
			else {
				cout << num << endl;
			}
		}
	}








	getchar();
	getchar();
	return 0;
}