#35452: python 3行解


sshs1201 (LYT)


a=list(input().split())
dict={"+":int(a[0])+int(a[2]),"-":int(a[0])-int(a[2]),"*":int(a[0])*int(a[2]),"/":int(a[0])//int(a[2])}
print(dict[a[1]])