#include <stdio.h>

long long int habs(long long int n){ return n > 0 ? n : -n; }

int main(){
        long long int A, B;
        long long int tmp;
        scanf("%lld %lld", &A, &B);

        tmp = habs(A);
        while(tmp % 10 == 0){
                tmp /= 10;
        }
        if(tmp > 9){
                goto calc;
        }

        tmp = habs(B);
        while(tmp % 10 == 0){
                tmp /= 10;
        }
        if(tmp > 9){
                goto calc;
        }else {
                goto ansan;
        }

calc:
        A *= B;
        if(habs(A) > 99999999) printf("E\n");
        else printf("%lld\n", A);
        return 0;
ansan:
        A *= B;
        printf("%lld\n", A / 10);
        return 0;
}