#include<stdio.h> calculate bonus(years_of_service):

    if years_of_service <= 0:
       print("Invalid Input")
    elif 1 <= years_of_service <= 5:
       print("5% Bonus")
    elif 6 <= years_of_service <= 10:  
       print("10% Bonus")
    else:
       print("15% Bonus")