/*#include <stdio.h>
int main()
{
int a,n,i,s=0;
scanf("%d",&a);
for(i=0; i<a; i++){
scanf("%d",&n);
if(n%5==0){
s+=n;
}
}
printf("%d",s);
}*/
/*#include <stdio.h>
int main()
{
int a,d,n;
scanf("%d %d %d",&a,&d,&n);
printf("%d",a+d*(n-1));
}*/
/*#include <stdio.h>
int main()
{
long long int a,r,n,i;
scanf("%lld %lld %lld",&a,&r,&n);
for(i=1; i<n; i++){
a=a*r;
}
printf("%lld",a);
}*/
/*#include <stdio.h>
int main()
{
int n,i;
scanf("%d",&n);
for(i=1; i<=n; i++){
if(n%i==0)
printf("%d ",i);
}
}*/
/*#include <stdio.h>
int main()
{
int n,i;
scanf("%d",&n);
for(i=2; i<n; i++){
if(n%i==0){
printf("not prime");
break;
}
}
if(i==n){
printf("prime");
}
}*/
/*#include <stdio.h>
int main()
{
long long int n,m=1,k,i;
scanf("%lld %lld",&n,&k);
for(i=1; i<=k; i++){
m=m*n;
}
printf("%lld",m);
}*/
/*#include <stdio.h>
int main()
{
int n,m=1,i;
scanf("%d",&n,&m);
for(i=1; i<=n; i++){
m=m*i;
}
printf("%d",m);
}*/
/*#include <stdio.h>
int main()
{
long long int n,m=1,i;
scanf("%lld",&n);
for(i=1; i<100; i++){
m=m*10;
if(n/m==0){
printf("%lld",i);
break;
}
}
}*/
/*
#include<stdio.h>
int main()
{
int a,b,i,s=0;
scanf("%d %d",&a,&b);
for(i=a; i<=b; i++){
if(i%2==1){
s=s+i;
printf("+%d",i);
}
else{
s=s-i;
printf("-%d",i);
}
}
printf("=%d",s);
}
#include <stdio.h>
int main()
{
int a,b,i,s=0;
scanf("%d %d",&a,&b);
for(i=a; i<=b; i++){
if(i%2==1){
s=s+i;
if(i==a) {
printf("+");
}
printf("%d",i);
}
else{
s=s-i;
printf("-%d",i);
}
}
printf("=%d",s);
}
#include <stdio.h>
int main()
{
int k,h,i;
scanf("%d %d",&k,&h);
if(k%2==0){
k=(k-1)*10;
}
if(h%2==0){
h=(h-1)*10;
}
printf("%d",h+k);
}*/
/*
#include <stdio.h>
int main()
{
int n, c=0;
scanf("%d",&n);
while(n!=0){
n/=10;
c++;
if(n==0){
break;
}
}
for(;n>0;){
n/=10;
c++;
}
}
*/
/*#include <stdio.h>
int main()
{
int n=1;
while(n!=0){
scanf("%d",&n);
if(n!=0){
printf("%d\n",n);
}
}
}*/
/*#include <stdio.h>
int main()
{
int n;
scanf("%d",&n);
while(n!=0){
printf("%d\n",n);
n=n-1;
}
}*/
/*#include <stdio.h>
int main()
{
char c='j';
while(c!='q'){
scanf("%c ",&c);
printf("%c\n",c);
}
}*/
#include <stdio.h>
int main()
{
int n=1,m=1;
scanf("%d",&n);
while(n!=0){
n=n/m
m=m*10
}
}