Problema 25
#include <iostream>
using namespace std;
int n;
int main()
{
cin >> n;
while(n/100)
n = n / 10;
cout << n/10 + n%10;
return 0;
}
Problema 22
#include <iostream>
using namespace std;
int n, k, ninv, nrp, nri, cif;
int main()
{
cin >> n;
k=n;
ninv=0;
while(n!=0)
{
ninv=ninv*10+n%10;
n=n/10;
}
while(ninv != 0)
{
cif = ninv % 10;
if(cif % 2 == 0) nrp = nrp * 10 + cif;
else nri = nri * 10 + cif;
ninv = ninv / 10;
}
cout << nrp << " " << nri;
return 0;
}
