#! /usr/bin/python3

switch = { 'key1':'value1',
           'key2':'value2',
           'key3':'value3',
           ...
           'keyn':'valuen'
           }

def function1(data):
    #some code
    return value 

def function2(data):
    #some code
    return value

    ...

def functionn(data):
    if (data.find('something1') != -1):
        return value1    
    if (data.find('something2') != -1):
        return value2
    ...
    if (data.find('somethingn') != -1):
        return valuen
    return "OK"

def Message(data):
    if (data.find('something1') != -1):
        return function1(data)
    elif (data.find('something2') != -1):
        return function2(data)
    ...
    elif (data.find('somethingn') != -1):
        return functionn(data)
    else:
        for key in switch:
            if (data.find(key) != -1):
                return switch[key]
    return 'OK'

###########################################################
#*********************************************************#
###########################################################
data=input()
msg=Message(data)