Problem: 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

Solution (in CPP):

Solution:
// AOJ ITP 1_4_C
#include<cstdio>

int main()
{
	int a, b;
	char op[2];
	while( scanf( "%d%s%d", &a, op, &b ), *op != '?' )
		printf( "%d\n", *op=='+' ? a+b : *op=='-' ? a-b : *op=='*' ? a*b : a/b );

	return 0;
}