#include <stdio.h>
int check_is_anzan( long n ){
    int ret = 1;
    int i;
    for( i = 0; i < 10; i++ ){
        if( n % 10 == 0 ){
            n = n / 10;
            if( n < 10 ){
                break;
            }
        }else{
            ret = 0;
            break;
        }
    }
    return ret;
}
int main(void){
    long a, b;
    long ans = 0;
    scanf( "%ld %ld", &a, &b );
    if( check_is_anzan( a ) + check_is_anzan( b ) == 2 ){
        ans = ( a * b ) / 10;
        printf( "%ld\n", ans );
    }else{
        ans = a * b;
        if( ( ans > 99999999 ) || ( ans < -99999999 ) ){
            printf( "E\n", a * b );
        }else{
            printf( "%ld\n", a * b );
        }
    }
}