#include<iostream>
#include<cassert>
#define rep(i,n) for(i=0;i<(int)(n);i++)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;

ll a,b;
const int MAX=(int)(1e8);

bool is_ten_power(ll x){
    int i;
    string xs=to_string(x);
    for(i=1;i<xs.length();i++)if(xs[i]!='0')return false;
    return true;
}

int main(){
    int cnt_digit=0;
    bool is_positive=true;
    scanf("%lld%lld",&a,&b);
    if(a<0)is_positive=!is_positive,a=-a;
    if(b<0)is_positive=!is_positive,b=-b;
    if(a>=100&&b>=100&&is_ten_power(a)&&is_ten_power(b)){
        a/=10;
        printf("%lld\n",a*b*(is_positive?1:-1));
    }else{
        if(a*b<MAX)printf("%lld\n",a*b*(is_positive?1:-1));
        else puts("E");
    }
    return 0;
}