#include <bits/stdc++.h>
using namespace std;
#define int long long
const int MOD=1000000007;
const int INF=1e18;

signed main(){
    cin.tie(0);
	ios::sync_with_stdio(false);
    int A , B;
    std::cin >> A >> B;
    int ans = A*B;
    if (A%100==0 && B%100==0)
    {
        std::cout << A*B/10 << "\n";
        return 0;
    }
    if (abs(A*B)<=99999999)
    {
        cout<<A*B<<endl;
    }else{
        cout<<'E'<<endl;
    }

    return 0;
}