s = input().replace(' ', '')
m, n = map(int, s.split(s[2]))
if s[2] == '+':
    print(m + n)
elif s[2] == '-':
    print(m - n)
elif s[2] == '*':
    print(m * n)
elif s[2] == '/':
    print(m / n)
else:
    print(m % n)