#include <stdio.h>
#include <stdlib.h>

int main() {
        long a,b;
        scanf("%ld %ld",&a,&b);
        int acnt=0;
        int bcnt=0;
        long aa=abs(a);
        long ab=abs(b);
        while((aa%10==0)&&!(aa<10)){
                aa=aa/10;
                acnt++;
        }
        while((ab%10==0)&&!(ab<10)){
                ab=ab/10;
                bcnt++;
        }
        if((aa>=1)&&(aa<=9)&&(ab>=1)&&(ab<=9)&&(acnt>=2)&&(bcnt>=2)){
                printf("%ld\n",a/10*b);
        }
        else {
                long ans=a*b;
                if ((ans>=-99999999)&&(ans<=99999999)) {
                        printf("%ld\n",ans);
                }
                else {
                        printf("E\n");
                }
        }
        return 0;
}