/*#include
main()
{
long nc=0;
while(getchar()!=EOF)
{
++nc;
printf("%ld\n",nc);
}
}*/

#include
main()
{
double nc;
for(nc=0;getchar()!=EOF;++nc)
;
printf("%.0f",nc);
}

AGAIN A BRAIN TEASER
THERE IS A STONE OF 40 Kg. IT HAS TO BE DIVIDED INTO FOUR PARTS(INTEGER TYPE) SO THAT ONE CAN WEIGH 1Kg, 2Kg, 3Kg, 4Kg,.............UPTO 40Kg BY ARRANGEING THE FOUR PARTS OF STONE
AT A SINGLE TIME i.e U CAN NOT WEIGH ONE MATERIAL TWICE OR THRICE OR MORE USING A BALANCE.

A BRAIN TEASURES:::::::::::::::::::::::::::::::
A goes to a shop & buy a pepsi of Rs20. A gives 100 rupees note to shopkeeper B.
B doesn't have change so B went to C to get change. Now B returns Rs80 to A and a pepsi. Later C comes to B & says that 100 rupees note is fake. So B had to give Rs100 to C. NOW what is the total loss of B?