#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;


	if (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;
}