#include<iostream>
using namespace std;
int main()
{
int n, nrcif=0, p=1,nr, x, y;
cin>>n;
nr=n;
while(n>=1)
{
n=n/10;
nrcif=nrcif+1;
p=p*10; }
// cout<<nrcif;
x=nr/(p/10);
y=(nr-x*p/10)/(p/100);
cout<<"suma primelor 2 cifre ale numarului "<<nr<<" este "<<x+y;
}