import sys
from time import clock

def main():
    
    start = clock()
    fin=open("C:/inputs/in4_7.txt","r")
    fout=open("out_27_sec4_7.txt","w")
    n=int(fin.read())
    sum=n*(n+1)*(n+n+1)/6

    end = clock()
    time= end - start
    fout.write(str(sum))
    fout.write("\n\n\n Number of additions = "+ str(3))
    fout.write("\n Number of multiplications = "+ str(2))
    fout.write("\n Number of divisions = "+ str(1))
    fout.write("\n Total execuion time ="+ str(time)+ " seconds")
    m=sys.getsizeof(n)+sys.getsizeof(sum)+sys.getsizeof(fin)+sys.getsizeof(fout)
    fout.write("\n Memory used= "+str(m)+" bytes")
    fin.close()
    fout.close()
    
main()