#def pc(Cc,e0,H,sig1,sig2):
    #return(Cc/(1+e0)*(H)*(sig1/sig2))
#print pc(1,23,5,2.4,5.5)
#print "input value of sig1"
#sig1 = float(input())
#print "input value of del_sig1"
#del_sig1 = float(input())
#sig2 = "input initial vertical stress"
#sig2 = (sig1) + (del_sig1)
#print sig2
#print "the value of LL"
#LL = float(input())
#print "input the value of Cc"
#Cc = float(input())
#Cc = (0.009)*(LL-10)
#print Cc
print "the value of log"
log = float(input())
print log
