import time  
def sum_of_n_numbers(n):  
    start_time = time.time()  
    s = 0  
    for i in range(1,n+1):  
        s = s + i  
    end_time = time.time()  
    return s,end_time-start_time  
  
n = 5  
print("\nTime to sum of 1 to ",n," and required time to calculate is :",sum_of_n_numbers(n))