"""
Task
You are given an expression in a line. Read that line as a string variable, such as var, and print the result using eval(var).

NOTE: Python2 users, please import from __future__ import print_function.

Constraint
Input string is less than 100 characters.
"""

# Enter your code here. Read input from STDIN. Print output to STDOUT

if __name__ == "__main__":
    eval(input())
