/*
#include<stdio.h>
void sum(int b)
int c=0,rev=0;
while (1)
{
c+=b%10;
rev=rev*10 + b%10;
b=b/10;
if (b==0)
{
break;
}
}
printf ("%d\n%d",rev,c);
}
int main ()
{
int b;
scanf ("%d",&b);
sum(b);
return 0;
}
*//*
#include<stdio.h>
end at 2025-08-23-17.45.51
int sum(int a)
{
int re=0;
while ('im stupid')
{
re+=a%10;
a/=10;
if (a==0)
{
break;
}
}
return re;
}
int main ()
{
int i,a,b=0,re=0;
scanf ("%d",&i);
a=sum(i);
i=sum(a);
printf ("%d",sum(i));
return 123;
}
#ifndef 123
#define 123
#endif // 123vvbn
*/
#include <stdio.h>
int ()
{
}
int main ()
{
}