/*include <stdio.h>
#include <stdlib.h>
int main()
{
printf("Hello world!\n");
return 0;
}
*/
/*
#include <stdio.h>
int main()
{
int a,b,i,e=0;
scanf("%d %d",&a,&b);
for (i=a;i<=b;i++)
{
if(i%2==1)
{
printf("+%d",i);
e= e+i;
}
else if (i%2==0)
{
printf("-%d",i);
e= e-i;
}
}
printf("=%d",e);
}
*/
/*
#include <stdio.h>
int main()
{
int a,b,i,e=0;
scanf("%d %d",&a,&b);
for (i=a;i<=b;i++)
{
if(i%2==1)
{
e= e+i;
}
else if (i%2==0)
{
e= e-i;
}
}
printf("%d",e);
}
*/
/*
#include <stdio.h>
int main()
{
int a,b,i,e=0;
scanf("%d %d",&a,&b);
for (i=a; i<=b; i++)
{
if(i==a&&i%2==1)
{
printf("%d",i);
e= e+i;
}
else if(i%2==1)
{
printf("+%d",i);
e = e+i;
}
else if (i%2==0)
{
e= e-i;
printf("-%d",i);
}
}
printf("=%d",e);
}
*/
/*
#include <stdio.h>
int main()
{
int a,i,e=0;
scanf("%d",&a);
while(a>0)
{
a=a/10;
e = e+1;
}
printf("%d",e);
}
*/
/*
#include <stdio.h>
int main()
{
int a;
scanf("%d",&a);
while(a!=0)
{
printf("%d\n",a);
a= a-1;
}
}
*/
/*
#include <stdio.h>
int main()
{
int a,b,e=0;
scanf("%d",&a);
while(e!=a)
{
scanf("%d",&b);
printf("%d\n",b);
e = e+1;
}
}
*/
/*
#include <stdio.h>
int main()
{
int a=1;
while(a!=0)
{
scanf("%d",&a);
if(a==0)
{
break;
}
printf("%d\n",a);
}
}
*/
/*
#include <stdio.h>
int main()
{
int n,t=0;
scanf("%d",&n);
while(n>=t*t)
{
t++;
}
t--;
printf("%d %d",n-t*t,t);
}
*/
#include <stdio.h>
int main()
{
int a,c,e=0;
scanf("%d",&a);
while(a!=0)
{
c = a/10;
}
if (c==1)
{
printf("%d\n%d",,e);
}
}