# Program to check input  
# type in Python 
  
# num = input ("Enter emergency = 1 non-emergency = 0 :") 
# print(num) 
# name1 = input("Enter name : ") 
# print(name1) 
  
# # Printing type of input value 
# print ("type of number", type(num)) 
# print ("type of name", type(name1)) 

import math

rad = 180 * math.pi / 180
print(math.cos(rad))