#coding:utf-8

def main():
    l,m = map(int,input().split(' '))
    print(cul(l,m))

def cul(a,b):
    ans = a * b
    if (a<=-100 or 100<=a) and (b<=-100 or 100<=b) and ans % 10000 == 0:
        ans //= 10
        return ans    
    elif ans <= -100000000 or ans >= 100000000:
        return 'E'
    else:
        return ans

if __name__ == '__main__':
    main()