X,Y = input().split()

Z = list(X+Y+'+0')

flag = True
while flag == True:
    flag = False
    for i in range(len(Z),-1,-1):
        if (i == 0 or Z[i-1] in ["+","-"]) and Z[i] == "0" and len(Z)>i+1 and Z[i+1] not in ["+","-"]:
            del Z[i]
            flag = True
        
Z = "".join(Z)
#print (Z)
print (eval(Z))