#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<string>
#include<algorithm>
#include<cmath>
#include<queue>
#include<vector>
#include<stack>
using namespace std;

#define REP(i,n) for(int i=0;(i)<(n);(i)++)
#define ll long long
#define int long long

int N;
int A, B;
int ans;
signed main() {
	cin >> A >> B;
	if (A == 0 || B == 0) {
		cout << 0 << endl;
		return 0;
	}
	int tmpA = A;
	int tmpB = B;
	while (tmpA % 10 == 0) tmpA /= 10;
	while (tmpB % 10 == 0) tmpB /= 10;
	if (A % 100 == 0 && tmpA < 10 && B % 100 == 0 && tmpB < 10) {
		ans = A*B / 10;
		cout << ans << endl;
		return 0;
	}
	else ans = A*B;

	if (abs(ans) >= 1e8) cout << 'E' << endl;
	else cout << ans << endl;
	return 0;
}