Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.

The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.

Constraints

* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.

Input

The input consists of multiple datasets. Each dataset is given in the following format.


a op b


The input ends with a dataset where op = '?'. Your program should not process for this dataset.

Output

For each dataset, print the value in a line.

Example

Input

1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0


Output

3
38
26
10
108
ct=-1
a=[0]*100000
b=[0]*100000
c=[0]*100000
while True:
    ct+=1
    a[ct],b[ct],c[ct]=map(str,raw_input().split())
    if b[ct]=="?":
        break
    else:
        continue
for i in xrange(ct):
    if b[i]=="+":
        print(int(a[i])+int(c[i]))
    elif b[i]=="-":
        print(int(a[i])-int(c[i]))
    elif b[i]=="*":
        print(int(a[i])*int(c[i]))
    else:
        print(int(a[i])/int(c[i]))
    